Glass pane as head-up display

Information

  • Patent Grant
  • 10562275
  • Patent Number
    10,562,275
  • Date Filed
    Wednesday, March 15, 2017
    7 years ago
  • Date Issued
    Tuesday, February 18, 2020
    4 years ago
Abstract
A glass pane is described. The glass pane has at least one pane, and one adhesive layer on the pane. The adhesive layer has at least one thermoplastic film with a luminescent pigment and a barrier film with an anti-scratch coating.
Description

The invention relates to a glass pane, a method for producing the glass pane, and its use as a head-up display.


Head-up displays (HUDs) are widespread in aviation. The systems mounted in the direct field of vision of pilots display the most important data about their own and other aircraft. These systems, established and much used in the military sector, also have many possibilities for use in the civil sector, in particular in the automobile sector. Thus, data about the speed, the distance from the preceding vehicle or directional data from the navigation equipment can, in contrast to head-down displays (HDDs), be displayed right at the eye level of the driver. These capabilities clearly improve the traffic safety of the vehicle as the driver cannot watch the traffic situation while looking at the instruments. At increased speeds of the motor vehicle, on freeways, for example, the distance traveled “blind” by the vehicle can be significant and can cause an increased accident risk.


If head-up displays (HUDs) are illuminated by an external light source, such as a laser, the light fields can be seen only with difficulty depending on the prevailing light and weather conditions. Strong sunlight and light reflection through drops of water or particles of dirt make seeing the data projected in the head-up display significantly more difficult. This is particularly clearly evident with virtual images that are projected onto the display area, for example, the front window. Disadvantages of these conventional HUDs are also the limited field of vision for presentation of the projected data. Real images generated on the display area by electromagnetically excited dyes or pigments constitute a possible approach to a solution. In this case, the entire pane can, in principle, be used as a data carrier.


Because of the size of the pane and the tendency of the pigments to distribute themselves uniformly in the adhesive layer, relatively high concentrations of the chromophoric pigments are necessary. The treatment of the glass pane in the autoclave intensifies the dissolution of the pigments in the adhesive layer. However, in many cases, high pigment concentrations are very expensive and sometimes require special precautionary measures in light of the regulatory classification and handling of pigments or dyes as hazardous substances.


DE 603 14 613 T2 discloses a photochromic composition and a method for its production. The composition contains a linear, cross-linkable polyurethane or polyurethane-urea polymer and a photochromic organic compound.


WO 2004/099172. A1 discloses a photochromic composition on a benzo-, naphtho-, and phenathrochromic structure substituted with an arylamine group.


U.S. Pat. No. 7,230,767 B2 discloses an image display system in a motor vehicle window pane. The arrangement contains luminescent compounds on the outward facing side of the inner pane. The luminescent compounds are illuminated by a light source and appear in the field of vision of an automobile driver.


The object of the invention is to provide a glass pane that can be used as a head-up display and enables good recognizability as well as high luminosity in one or a plurality of colors under all light conditions even with low pigment or dye concentrations.


The object of the present invention is accomplished according to the invention by means of the independent claim 1. Preferred embodiments are given by the subclaims.


A method according to the invention for producing a glass pane with head-up display, a device, and their use emerge from other coordinated claims.


The glass pane according to the invention comprises at least one pane and at least one polymer adhesive layer. The pane preferably contains flat glass (float glass), quartz glass, borosilicate glass, soda lime glass. The pane preferably has average light transmission (unless otherwise specified as light transmission for light type A and a 2°—standard observer according to DIN 5033 for light of the wavelengths from 380 nm to 780 nm) of more than 80%, preferably more than 90% The pane preferably has light transmission of >70%, particularly preferably 75% in the wavelength range from 360 nm to 420 nm.


The adhesive layer contains at least a first luminescent pigment, a thermoplastic film, and a. barrier film. The adhesive layer is disposed with the thermoplastic film side on the pane and fixedly bonded to the pane. The barrier film is disposed on the side of the adhesive layer facing away from the pane. The thermoplastic film preferably contains PVB (polyvinyl butyral) or EVA (poly-ethyl-vinyl acetate). The luminescent first pigments are preferably contained in the entire first thermoplastic film volume. The barrier film acts as a diffusion barrier for the luminescent pigments. The anti-scratch coating on the side of the barrier film facing away from the pane acts as a hard, scratch-resistant surface. The barrier film preferably contains less than 20%, particularly preferably less than 10%, and more particularly preferably less than 1% of the concentration of luminescent pigment than in the thermoplastic film. The luminescent pigments contain, in the context of the invention, organic and/or inorganic luminescent compounds, ions, aggregates, and/or molecules. Luminescence includes fluorescence and/or phosphorescence processes, excitation with electromagnetic radiation, and emission of electromagnetic radiation. The radiation emitted preferably has a different wavelength from the exciting radiation. The radiation emitted preferably has a higher wavelength. The thermoplastic film and further thermoplastic films, if any, preferably have light transmission of >70% particularly preferably >82%, measured at a wavelength of 405 nm. The light transmission of the thermoplastic films can be adjusted by film thickness, polymer composition, degree of polymerization, distribution of polymerization, UV blockers, or plasticizers.


The barrier film preferably contains polybutylene terephthalate (PBT), polycarbonate (PC), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN), poly vinyl chloride (PVC), polyvinyl fluoride (PVF), polyvinyl butyral (PVB) without plasticizer, and/or copolymers thereof, particularly preferably polyethylene terephthalate (PET).


The barrier film preferably has light transmission of >70%, particularly preferably >80%, measured at a wavelength of 405 nm.


The thermoplastic film preferably has light transmission of >75%, preferably >82%, in the wavelength range from. 390 nm to 410 nm.


The adhesive layer preferably contains PVC (polyvinyl chloride), PU (polyurethane), EVA (poly-ethyl vinyl acetate and mixtures as well as copolymers thereof.


The barrier film preferably contains a second luminescent pigment or dye. The second luminescent pigment preferably has a different excitation wavelength and emission wavelength from the first luminescent pigment. Alternatively, further thermoplastic films with luminescent pigments and barrier films lying therebetween can be disposed.


The adhesive layer preferably contains no other UV blockers active in the range of the excitation spectrum of the fluorescent particles between 360 nm and 400 nm. The luminescent pigments according to the invention preferably act as UV blockers.


The luminescent pigment preferably has a local excitation maximum in the range from 350 nm to 450 nm, particularly preferably 390 nm to 420 nm.


The luminescent pigment preferably has a local emission maximum in the range from 400 nm to 800 nm.


The anti-scratch coating preferably contains organically and/or inorganically bound SiO2, TiO2, Al2O3, Si3N4, preferably polysiloxane. The anti-scratch coating is disposed on the barrier film on the side of the adhesive layer facing away from the pane.


The adhesive layer preferably has a thickness of 0.30 mm to 1.2 mm, preferably 0.70 mm to 0.90 mm. The barrier film preferably has a thickness of 0.10 mm to 0.30 mm. The thermoplastic film preferably has a thickness of 0.3 mm to 0.9 mm.


The luminescent pigment preferably contains a hydroxyalkyl terephthalate with the formula: R1—COO—P(OH)x(0-4)-COO—R2, where R1, R2 is an alkyl or allyl residue with 1 to 10 C atoms, P is a phenyl ring, OH is hydroxyl groups bonded to the phenyl ring, and x is the number of hydroxyl groups bonded to the phenyl ring. The general structural formula is:




embedded image


The luminescent pigment preferably contains diethyl 2,5-dihydroxyterephtalate. The structural formula is:




embedded image


The luminescent pigment preferably contains benzopyranes, naphthopyranes, 2H-naphthopyranes, 3H-naphthopyranes, 2H-phenanthropyranes, 3H-phenanthropyranes, photochromic resins, coumarins, xanthines, naphthalinic acid derivatives, oxazoles, stilbenes, styryls, perylenes, naphthalimides, naphthals, phenyls, xanthenes, lanthanides, preferably Y2O3:Eu, YVO4:Tm, Y2O2S:Pr, Gd2O2S:Tb, and/or mixtures thereof.


The thermoplastic film preferably contains 0.1 g/m2 to 15 g/m2 of luminescent pigment. The quantity indications are based on a thickness of the thermoplastic film of roughly 0.76 mm.


The pane preferably has a thickness of 1 mm to 8 mm, particularly preferably 1.4 mm to 2.5 mm.


The barrier film preferably has a coating, preferably a metallic coating, particularly preferably, ZnO, Ag, In2O3, TiO2, AlN. The coating intensifies the action of the barrier film as a diffusion barrier for the luminescent pigments or dyes. The coating is preferably disposed on the barrier film adjacent the thermoplastic film.


The invention further comprises a device for displaying a pictogram, numbers, and graphic characters. The device comprises a glass pane as described above and a light source directed to the glass pane. The light source emits electromagnetic radiation, preferably electromagnetic radiation of the wavelength of 360 nm to 420 nm. The radiation emitted by the light source is absorbed by the luminescent pigments in the adhesive layer and is re-emitted with a changed wavelength. This emitted radiation is perceived by the viewer as a pixel on the pane. The light source preferably comprises a diode laser or laser scanner.


The invention further comprises a method for producing a glass pane. In a first step, a thermoplastic film (preferably PVB or EVA) and a barrier film (preferably PET) with an anti-scratch coating (preferably polysiloxane) are bonded to form an adhesive layer (lamination film) on the outside of the barrier film. Then, a luminescent pigment is applied on the thermoplastic film side of the adhesive layer. In the following step, the adhesive layer is laminated between a pane (on the thermoplastic film side) and a lamination pane (on the barrier film side having the anti-scratch coating). The lamination preferably occurs at temperatures from 120° C. to 170° C., a pressure of 10 bar to 15 bar, and for a period of 30 min to 240 min. During lamination, the luminescent pigments are distributed preferably uniformly in the entire thermoplastic film and only slightly in the barrier film. After lamination, the barrier film preferably contains less than 1 wt.-% of a first luminescent pigment in the thermoplastic film. Subsequently, the lamination pane is carefully removed and a composite of a pane and an adhesive layer is obtained.


The luminescent pigment is preferably applied by spraying, screen printing, offset printing, ink jet printing, and/or flexographic printing.


The invention further comprises the use of the glass pane as transparent or (partially) tinted display systems, head-up display in buildings, billboards, motor vehicles, airplanes, and/or helicopters, particularly preferably as windshield in motor vehicles or as a billboard.





In the following, the invention is explained in detail with reference to the drawings and an exemplary embodiment as well as a comparative example. The drawings are purely schematic representations and are not to scale. They in no way restrict the invention.


They depict:



FIG. 1 a cross-section of a laminated glass pane with luminescent particles according to the prior art,



FIG. 2 a cross-section of a glass pane according to the invention,



FIG. 3 a cross-section of the adhesive layer according to the invention,



FIG. 4 a cross-section of a preferred embodiment of the adhesive layer according to the invention,



FIG. 5 a schematic view of the device according to the invention.






FIG. 1 depicts a cross-section of a glass pane (I) with luminescent particles (2a) according to the prior art. The glass pane (I) comprises at least one pane (1), one other pane (6), and at least one polymer adhesive layer (2). The adhesive layer (2) comprises a thermoplastic film (2b) made of PVB and luminescent pigments or dyes (2a), which are statistically distributed in the thermoplastic film (2b) after lamination of the glass pane (1). The broad distribution of the pigments (2a) in the thermoplastic film (2b) makes a high pigment concentration necessary, since luminosity is adequately high only with high pigment density (2a).



FIG. 2 depicts a cross-section of a glass pane (II) according to the invention. The glass pane (II) comprises at least one pane (I) and at least one polymer adhesive layer (2). The adhesive layer (2) comprises a first thermoplastic film (2b) made of PVB and luminescent pigments (2a) distributed in the thermoplastic film (2b). Following the first thermoplastic film (2b) is a barrier film (2c) made of PET, which is virtually free of luminescent pigments or dyes (2a). The expression “virtually free” means, in the context of the invention, no emission of electromagnetic radiation in the barrier film (2c) discernible to the naked eye upon excitation with a suitable radiation source. The barrier film (2c) contains an anti-scratch coating (2d) made of polysiloxane.



FIG. 3 depicts an enlarged cross-section of the adhesive layer (2) according to the invention made of the thermoplastic film (2b) with luminescent particles (2a) as well as the barrier film (2c) following the thermoplastic film (2b) and anti-scratch coating (2d) made of polysiloxane.



FIG. 4 depicts an enlarged cross-section of a preferred embodiment of the adhesive layer (2) according to the invention made of a thermoplastic film (2b) with luminescent particles (2a) and the barrier film (2c) following the first thermoplastic film (2b) and anti-scratch coating (2d). The barrier film (2c) has, adjacent the thermoplastic film (2b), a metallic coating (2e). This metallic coating can be implemented, for example, IR reflective or electrically heatable.



FIG. 5 depicts a cross-section of the device according to the invention. The glass pane (II) comprises a pane (1) and adhesive layer (2). The adhesive layer (2) is illuminated by a light source (4), preferably a laser scanner. The luminescent pigments (2a) situated in the adhesive layer (2) emit light that is perceived by the viewer.


LIST OF REFERENCE CHARACTERS

(1) pane,


(2) adhesive layer,


(2a) luminescent pigment or dye,


(2b) thermoplastic film,


(2c) barrier film,


(2d) anti-scratch coating,


(2e) coating between barrier film and thermoplastic film,


(3) lamination pane,


(4) light source,


(5) viewer, and


(6) second pane.

Claims
  • 1. A glass pane, comprising: a pane, andan adhesive layer on the pane,wherein the adhesive layer comprises at least one thermoplastic film with a first luminescent pigment distributed in the at least one thermoplastic film and a barrier film with an anti-scratch coating, wherein the first luminescent pigment contains a hydroxyalkyl terephthalate with formula: R1—COO—P(OH)xCOO—R2, where R1, R2 is an alkyl or allyl residue with 1 to 10 C atoms, P is a phenyl ring, OH is hydroxyl groups bonded to the phenyl ring, and x is the number of hydroxyl groups bonded to the phenyl ring having a value between 0 and 4.
  • 2. The glass pane according to claim 1, wherein the barrier film contains a second luminescent pigment.
  • 3. The glass pane according to claim 2, wherein the first luminescent pigment or the second luminescent pigment have an excitation maximum in a range from 350 nm to 450 nm, an emission maximum in a range from 400 nm to 800 nm, or an excitation maximum in a range from 350 nm to 450 nm and an emission maximum in a range from 400 nm to 800 nm.
  • 4. The glass pane according to claim 3, wherein the excitation maximum is in the range of 390 nm to 420 nm.
  • 5. The glass pane according to claim 3, wherein the emission maximum is in the range from 430 nm to 500 nm.
  • 6. The glass pane according to claim 1, wherein the pane comprises a prestressed or partially prestressed safety glass.
  • 7. The glass pane according to claim 1, wherein the barrier film contains polybutylene terephthalate, polycarbonate, polyethylene terephthalate, polyethylene naphthalate, polyvinyl chloride, polyvinyl fluoride, polyvinyl butyral without plasticizer, and/or mixtures and copolymers thereof.
  • 8. The glass pane according to claim 7, wherein the barrier film contains polyethylene terephthalate.
  • 9. The glass pane according to claim 1, wherein the anti-scratch coating contains organically or inorganically bound SiO2, TiO2, Al2O3, or Si3N4.
  • 10. The glass pane according to claim 9, wherein the anti-scratch coating contains organically or inorganically bound polysiloxane.
  • 11. The glass pane according to claim 1, wherein the adhesive layer has a thickness of 0.30 mm to 0.9 mm.
  • 12. The glass pane according to claim 11, wherein the adhesive layer has a thickness of 0.50 mm to 0.80 mm.
  • 13. The glass pane according to claim 1, wherein the first luminescent pigment contains benzopyranes, naphthopyranes, 2H-naphthopyranes, 3H-naphthopyranes, 2H-phenanthropyranes, 3H-phenanthropyranes, photochromic resins, coumarins, xanthines, naphthalic acid derivatives, oxazoles, stilbenes, styryls, perylenes, lanthanides, and/or mixtures thereof.
  • 14. The glass pane according to claim 13, wherein the first luminescent pigment contains Y2O3:Eu, YVO4:Tm, Y2O2S:Pr, Gd2O2S:Tb, and/or mixtures thereof.
  • 15. The glass pane according to claim 1, wherein the pane has a thickness of 1 mm to 8 mm.
  • 16. The glass pane according to claim 15, wherein the pane has a thickness of 1.4 mm to 2.5 mm.
  • 17. The glass pane according to claim 1, wherein the barrier film has a metallic coating.
  • 18. The glass pane according to claim 17, wherein the metallic coating is ZnO, Ag, In2O3, Ti, TiO2, and/or AlN.
  • 19. A device for displaying a pictogram, graphic characters, and/or numbers, comprising: the glass pane according to claim 1, anda light source directed to the glass pane, wherein the light source emits electromagnetic radiation onto the glass pane.
  • 20. The device according to claim 19, wherein the light source comprises a laser.
  • 21. The device according to claim 20, wherein the laser is a diode laser.
  • 22. The glass pane according to claim 1, wherein the first luminescent pigment contains diethyl 2,5-dihydroxyterephthalate.
  • 23. A method for producing a glass pane, comprising: bonding at least one thermoplastic film and a barrier film with an anti-scratch coating to form an adhesive layer,applying a luminescent pigment on the at least one thermoplastic film of the adhesive layer,laminating the adhesive layer between a pane and a lamination pane,removing the lamination pane, andobtaining the glass pane having the pane and the adhesive layer on the pane, wherein the adhesive layer comprises the at least one thermoplastic film with the luminescent pigment distributed in the at least one thermoplastic film and the barrier film with the anti-scratch coating, wherein the luminescent pigment contains a hydroxyalkyl terephthalate with formula: R1—COO—P(OH)xCOO—R2, where R1, R2 is an alkyl or allyl residue with 1 to 10 C atoms, P is a phenyl ring, OH is hydroxyl groups bonded to the phenyl ring, and x is the number of hydroxyl groups bonded to the phenyl ring having a value between 0 and 4.
  • 24. A method comprising: using a glass pane as a head-up display in buildings, billboards, motor vehicles, airplanes, and/or helicopters, wherein the glass pane comprises a pane and an adhesive layer on the pane, wherein the adhesive layer comprises at least one thermoplastic film with a first luminescent pigment and a barrier film with an anti-scratch coating, wherein the first luminescent pigment contains a hydroxyalkyl terephthalate with formula: R1—COO—P(OH)xCOO—R2, where R1, R2 is an alkyl or allyl residue with 1 to 10 C atoms, P is a phenyl ring, OH is hydroxyl groups bonded to the phenyl ring, and x is the number of hydroxyl groups bonded to the phenyl ring having a value between 0 and 4.
  • 25. The method according to claim 24, wherein the glass pane is used as windshield in motor vehicles or as a billboard.
Priority Claims (1)
Number Date Country Kind
10177778 Sep 2010 EP regional
CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a Continuation of U.S. application Ser. No. 13/819,197 filed on Jun. 3, 2013, which, in turn, is the US national stage of International Application PCT/EP2011/064354 filed on Aug. 22, 2011 which, in turn, claims priority to European Patent Application EP 10177778.7 filed on Sep. 21, 2010.

US Referenced Citations (65)
Number Name Date Kind
2490662 Thomsen Dec 1949 A
5549786 Jones et al. Aug 1996 A
5573842 Gutweiler Nov 1996 A
6002505 Kraenert et al. Dec 1999 A
6072686 Yarbrough Jun 2000 A
6670603 Shimada et al. Dec 2003 B2
6708595 Chaussade et al. Mar 2004 B1
6879499 Matsumoto Apr 2005 B2
7012746 Bermel Mar 2006 B2
7090355 Liu et al. Aug 2006 B2
7230767 Walck et al. Jun 2007 B2
7261842 Henry et al. Aug 2007 B2
8072686 Cui et al. Dec 2011 B2
8339332 Kanou Dec 2012 B2
8487277 Labrot et al. Jul 2013 B2
8519362 Labrot et al. Aug 2013 B2
8722195 Labrot et al. May 2014 B2
20010005262 Tsurushima Jun 2001 A1
20010041251 Bravet et al. Nov 2001 A1
20020120916 Snider, Jr. Aug 2002 A1
20030166788 Papenfuhs Sep 2003 A1
20030193044 Henry et al. Oct 2003 A1
20050007562 Seki et al. Jan 2005 A1
20050074591 Zagdoun Apr 2005 A1
20050077647 Coyle et al. Apr 2005 A1
20060065735 Li et al. Mar 2006 A1
20060153558 Tan et al. Jul 2006 A1
20060171007 Chen et al. Aug 2006 A1
20060221021 Hajjar et al. Oct 2006 A1
20060221022 Hajjar Oct 2006 A1
20060227087 Hajjar et al. Oct 2006 A1
20060244925 Seki et al. Nov 2006 A1
20070014318 Hajjar et al. Jan 2007 A1
20070046176 Bukesov et al. Mar 2007 A1
20070187616 Burroughs et al. Aug 2007 A1
20070188417 Hajjar et al. Aug 2007 A1
20070206258 Malyak et al. Sep 2007 A1
20070228927 Kindler et al. Oct 2007 A1
20080203901 Bukesov et al. Aug 2008 A1
20080231738 Iida Sep 2008 A1
20080259431 Weichmann et al. Oct 2008 A1
20080291140 Kent et al. Nov 2008 A1
20080318063 Anderson Dec 2008 A1
20090033884 Yonekubo et al. Feb 2009 A1
20090115100 Nakai et al. May 2009 A1
20090141496 Yamamoto et al. Jun 2009 A1
20090153582 Hajjar et al. Jun 2009 A1
20090174632 Hajjar et al. Jul 2009 A1
20100063176 Kato et al. Mar 2010 A1
20100243858 Newman et al. Sep 2010 A1
20100253600 Seder et al. Oct 2010 A1
20110073773 Labrot et al. Mar 2011 A1
20110074660 Hajjar et al. Mar 2011 A1
20110076473 Lin et al. Mar 2011 A1
20110109529 Hajjar et al. May 2011 A1
20110141150 Hajjar et al. Jun 2011 A1
20110164158 Iida Jul 2011 A1
20110176208 Kindler et al. Jul 2011 A1
20110181948 Kindler et al. Jul 2011 A1
20110291554 Bukesov et al. Dec 2011 A1
20120068083 Labrot et al. Mar 2012 A1
20120299328 Labrot et al. Nov 2012 A1
20140218803 Labrot et al. Aug 2014 A1
20140232707 Alschinger et al. Aug 2014 A1
20160011414 Joseph Jan 2016 A1
Foreign Referenced Citations (46)
Number Date Country
1464884 Dec 2003 CN
101302301 Nov 2008 CN
822 714 Nov 1951 DE
40 24 330 Feb 1992 DE
199 18 811 Nov 2000 DE
100 02 152 Jul 2001 DE
103 50 529 Mar 2005 DE
10 2005 061 855 Jul 2007 DE
603 14 613 Mar 2008 DE
10 2009 044 181 Apr 2011 DE
0 157 030 Oct 1985 EP
0 597 391 May 1994 EP
0 734 852 Oct 1996 EP
0 990 941 Apr 2000 EP
2 110 237 Oct 2009 EP
2 233 962 Sep 2010 EP
2 929 016 Sep 2009 FR
2 929 017 Sep 2009 FR
2 424 382 Sep 2006 GB
7-149988 Jun 1995 JP
9-327898 Dec 1997 JP
10-119110 May 1998 JP
2001-113588 Apr 2001 JP
2001-249399 Sep 2001 JP
2002-241371 Aug 2002 JP
2003-340851 Dec 2003 JP
2004-341210 Dec 2004 JP
2007-1122 Jan 2007 JP
2007-527548 Sep 2007 JP
2008-235681 Oct 2008 JP
2008-260498 Oct 2008 JP
2009-86182 Apr 2009 JP
2009-139940 Jun 2009 JP
2009-145846 Jul 2009 JP
2009-539120 Nov 2009 JP
2010-243940 Oct 2010 JP
2010-271443 Dec 2010 JP
10-1999-0071481 Sep 1999 KR
2000-0068557 Nov 2000 KR
10-2005-0066398 Jun 2005 KR
WO-0194496 Dec 2001 WO
WO-2004099172 Nov 2004 WO
WO-20070398503 Apr 2007 WO
WO-2008132368 Nov 2008 WO
WO-2010139889 Dec 2010 WO
WO-2011042384 Apr 2011 WO
Non-Patent Literature Citations (15)
Entry
International Search Report for the Application No. PCT/EP2012/064666 dated Oct. 5, 2012.
Written Opinion of the International Searching Authority (PCT/ISA/237) for Application No. PCT/EP2012/064666 dated Oct. 5, 2012.
Day, M. et al., “Photochemical Degradation of Poiy(ethyiene Terephthalate). I. Irradiation Experiments with the Xenon and Carbon Arc”, Journal of Applied Polymer Science, 1972, vol. 16, pp. 175-189.
Edge, M. et al., “Identification of luminescent species contributing to the yellowing of poly(ethylene terephthalate) on degradation”, Polymer. 1995, vol. 36, No. 2, pp. 227-234.
International Search Report for the Application No. PCT/EP2010/064734 dated Jan. 19, 2011.
Written Opinion of the International Searching Authority (PCT/ISA/237) for Application No. PCT/EP2010/064734 dated Jan. 19, 2011.
Non-Final Office Action for U.S. Appl. No. 13/499,235 from the United States Patent and Trademark Office dated Oct. 1, 2013.
Notice of Allowance for U.S. Appl. No. 13/499,235 from the United States Patent and Trademark Office dated Mar. 14, 2014.
International Search Report for the Application No. PCT/EP2011/064354 dated Nov. 3, 2011.
Written Opinion of the International Searching Authority (PCT/ISA/237) for Application No. PCT/EP2011/064354 dated Nov. 3, 2011.
Written Opinion of the International Searching Authority (PCT/ISA/237) for Application No. PCT/EP2012/052338 dated Nov. 5, 2012.
International Search Report for the Application No. PCT/EP2012/05233 dated Nov. 5, 2012.
Non-Final Office Action for U.S. Appl. No. 14/110,916 from the United States Patent and Trademark Office dated Nov. 12, 2015.
Final Office Action for U.S. Appl. No. 14/110,916 from the United States Patent and Trademark Office dated May 13, 2016.
Notice of Allowance for U.S. Appl. No. 14/110,916 from the United States Patent and Trademark Office dated Jan. 4, 2017.
Related Publications (1)
Number Date Country
20170184845 A1 Jun 2017 US
Continuations (1)
Number Date Country
Parent 13819197 US
Child 15459996 US