Claims
- 1. Linear organopolysilxanes containing (meth)acryloxy groups, of the general formulaR1aR3-aSiO(R2SiO)c[R2Si—Y—SiR2O(R2SiO)c]dSiR3-bR1b (I) in which R can be identical or different and is a monovalent, substituted or unsubstituted hydrocarbon radical having 1 to 18 carbon atoms per radical, which is free from terminal aliphatic carbon—carbon multiple bonds,R1 is a radical of the formula where z is an integer whose value is from 1 to 10, R2 is a hydrogen atom or a methyl radical, R3 is a linear or branched alkylene radical having 1 to 6 carbon atom(s) per radical, and R4 is a linear or branched alkylene radical having 1 to 6 carbon atom(s) per radical, Y is a divalent organic radical which is free from terminal aliphatic carbon—carbon multiple bonds, a is 0 or 1, b is 0 or 1, c is 0 or an integer whose value is from 1 to 1000, d is 0 or an integer whose value is from 1 to 10, and with the proviso that the sum a+b per molecule is on average from 1.3 to 1.9.
- 2. A radiation curable composition, comprising:a) a linear organopolysiloxane containing (meth)acryloxy groups of claim 1, b) at least one photosensitizer.
- 3. The radiation curable composition of claim 2, wherein R1 is where z is an integer from 1 to 10.
- 4. The radiation curable composition of claim 2, wherein d is 0.
- 5. The radiation curable composition of claim 3, wherein d is 0.
- 6. A radiation curable composition as claimed in claim 2, wherein said photosensitizer comprises a photosensitizer mixture, comprising:b)i) from 90% to 60% by weight based on the weight of the photosensitizer mixture of an organopolysiloxane containing (meth)acryloxy groups and having the formula R1R2SiO(R2SiO)nSiR2R1 where n is an integer from 5 to 30; and b)ii) from 40% to 10% by weight based on the weight of the photosensitizer mixture of oligo[2-hydroxy-2methyl-1-(4-(methylvinyl)phenyl) propanone].
- 7. The radiation curable mixture of claim 6, wherein R1 is a radical of the formulawhere z is an integer from 1 to 10.
- 8. The radiation curable composition of claim 2, wherein said photosensitizer comprises a photosensitizer mixture, comprising:b)i) from 90% to 60% by weight based on the weight of the photosensitizer mixture, of an organopolysiloxane containing (meth)acryloxy groups and having the formula R1R2SiO(R2SiO)nSiR2R1 where n is an integer from 5 to 30; and b)ii) from 40% to 10% by weight based on the weight of the photosensitizer mixture, of oligo[2-hydroxy-2-methyl-1-(4-(methylvinyl)phenyl) propanone]constitutes from 5% to 30% of the total weight of a).
- 9. The radiation curable composition of claim 3, wherein said photosensitizer comprises a photosensitizer mixture, comprising:b)i) from 90% to 60% by weight based on the weight of the photosensitizer mixture, of an organopolysiloxane containing (meth)acryloxy groups and having the formula R1R2SiO(R2SiO)nSiR2R1 where n is an integer from 5 to 30; and b)ii) from 40% to 10% by weight based on the weight of the photosensitizer mixture, of oligo[2-hydroxy-2-methyl-1-(4-(methylvinyl)phenyl) propanone]constitutes from 5% to 30% of the total weight of a).
- 10. The radiation curable composition of claim 4, wherein said photosensitizer comprises a photosensitizer mixture, comprising:b)i) from 90% to 60% by weight based on the weight of the photosensitizer mixture, of an organopolysiloxane containing (meth)acryloxy groups and having the formula R1R2SiO(R2SiO)nSiR2R1 where n is an integer from 5 to 30; and b)ii) from 40% to 10% by weight based on the weight of the photosensitizer mixture, of oligo[2-hydroxy-2-methyl-1-(4-(methylvinyl)phenyl) propanone]constitutes from 5% to 30% of the total weight of a).
- 11. The radiation curable composition of claim 5, wherein said photosensitizer comprises a photosensitizer mixture, comprising:b)i) from 90% to 60% by weight based on the weight of the photosensitizer mixture, of an organopolysiloxane containing (meth)acryloxy groups and having the formula R1R2SiO(R2SiO)nSiR2R1 where n is an integer from 5 to 30; and b)ii) from 40% to 10% by weight based on the weight of the photosensitizer mixture, of oligo[2-hydroxy-2-methyl-1-(4-(methylvinyl)phenyl) propanone]constitutes from 5to 30% of the total weight of a).
- 12. The radiation curable mixture of claim 8 wherein R1 is a radical of the formulawhere z is an integer from 1 to 10.
- 13. The radiation curable mixture of claim 10 wherein R1 is a radical of the formulawhere z is an integer from 1 to 10.
Priority Claims (2)
Number |
Date |
Country |
Kind |
196 52 304 |
Dec 1996 |
DE |
|
197 20 472 |
May 1997 |
DE |
|
Parent Case Info
This is a continuation of application Ser. No. 09/319,905 filed on Aug. 20, 1999, now abandoned, which is a national stage entry of PCT/EP97/06922 filed on Dec. 11, 1997.
US Referenced Citations (6)
Foreign Referenced Citations (7)
Number |
Date |
Country |
43 25 359 |
Feb 1995 |
DE |
44 43 749 |
Jun 1996 |
DE |
0 424 960 |
May 1991 |
EP |
0 503 668 |
Sep 1992 |
EP |
0 508 491 |
Oct 1992 |
EP |
0 624 627 |
Nov 1994 |
EP |
95 26 266 |
Oct 1995 |
WO |
Non-Patent Literature Citations (3)
Entry |
Patent Abstracts Of Japan, vol. 107, No. 236 (C-1057) May 13, 1993 & JP 04 366 102 A (Sekisui Chem Co., Ltd.) Dec. 18, 1992. |
Chemical Abstracts, vol. 119, No. 20, Nov. 15, 1993 Columbus, Ohio, US; Abstract No. 204095. |
International Search Report—Jun. 6, 2000. |
Continuations (1)
|
Number |
Date |
Country |
Parent |
09/319905 |
Aug 1999 |
US |
Child |
09/775767 |
|
US |