Claims
- 1. A flame-proof thermoplastic molding composition containing:A. 40 to 98 parts by weight of an aromatic polycarbonate; B. 0 to 50 parts by weight of a vinyl copolymer; C. 0.5 to 60 parts by weight of a graft polymer produced by copolymerization of, (a) 5 to 95 parts by weight of a mixture comprising, (i) 50 to 95 parts by weight of a member selected from the group consisting of styrene, α-methylstyrene, halogen or alkyl ring-substituted styrene, C1-C8-alkyl methacrylate, C1-C8-alkyl acrylate, and mixtures thereof, and (ii) 5 to 50 parts by weight of a member selected from the group consisting of acrylonitrile, methacrylonitrile, C1-C8-alkyl methacrylate, C1-C8-alkyl acrylate, maleic anhydride, C1-C4-alkyl- and/or phenyl-N-substituted maleinimide and mixtures thereof, and (b) 5 to 95 parts by weight of a rubber graft base with a glass transition temperature below −10° C.; D. 0.5 to 20 parts by weight of a phosphorus compound of formula in which R1, R2, R3 and R4 independently of each other mean C1-C8 alkyl optionally substituted by halogen, C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl optionally substituted by halogen and/or alkyl in each case, n independently of each other means 0 or 1, q independently of each other means 0, 1, 2, 3 or 4, N means 0.1 to 5, R5 and R6 independently of each other mean C1-C4-alkyl or halogen, and Y means C1-C7-alkylidene, C1-C7-alkylene, C5-C12-cycloalkylene, C5-C12-cycloalkylidene, —O—, —S—, —SO—, —SO2— or —CO—; E. 0.05 to 5 parts by weight of fluorinated polyolefin; and F. 0.1 to 50 parts by weight of a finely divided inorganic compound which is AlO(OH), said finely divided inorganic compound having an average particle diameter <200 nm.
- 2. The molding composition of claim 1 wherein the average particle diameter of Component F is not greater than 150 nm.
- 3. The molding composition of claim 1 wherein said composition contains 50 to 95 parts by weight of said aromatic polycarbonate A.
- 4. The molding composition of claim 1 wherein in formula (I) N has a value of 0.3 to 2.
- 5. The molding composition of claim 1 wherein in formula (I) Y represents a methylene or isopropylidene group.
- 6. The molding composition of claim 1 wherein said composition contains 0.01 to 20 wt. %, related to the total molding composition, of at least one further flame-proofing agent that is different from Component D.
- 7. The molding composition of claim 6, wherein the flame proofing agent different from D is at least one monophosphorous compound selected from the group consisting of tributyl phosphate, tris-(2-chloroethyl) phosphate, tris-(2,3-dibromopropyl) phosphate, triphenyl phosphate, tricresyl phosphate, diphenylcresyl phosphate, diphenyloctyl phosphate, diphenyl-2-ethylcresyl phosphate, tri-(isopropylphenyl) phosphate, halogen-substituted aryl phosphates, methyl phosphonic acid dimethyl esters, methyl phosphonic acid diphenyl esters, phenyl phosphonic acid diethyl esters, triphenyl phosphine oxide and tricresyl phosphine oxide.
- 8. The molding composition of claim 1 wherein said rubber graft base is a member selected from the group consisting of diene rubber, acrylate rubber, silicone rubber and ethylene/propylene/diene rubber.
- 9. The molding composition of claim 1 further containing at least one member selected from the group consisting of stabilizers, pigments, mold release agent, flow auxiliary substances and anti-static agents.
- 10. A molded article comprising the composition of claim 1.
- 11. The molding composition of claim 1 wherein R5 and R6 are each independently of each other methyl, chlorine or bromine.
- 12. The molding composition of claim 1 wherein said finely divided inorganic compound has an average particle diameter of about 50 nm.
- 13. The molding composition of claim 1 wherein said finely divided inorganic compound has an average particle diameter of 1 to 100 nm.
- 14. The molding composition of claim 1 wherein said rubber graft base C.(b) is selected from at least one member of the group consisting of polybutadienes, butadiene/styrene copolymers, and acrylate rubbers grafted with at least one of styrene, acrylonitrile and alkyl (meth)acrylates.
- 15. A flame-proof thermoplastic molding composition containing:A. 40 to 98 parts by weight of an aromatic polycarbonate; B. 0 to 50 parts by weight of a vinyl copolymer; C. 0.5 to 60 parts by weight of a graft polymer produced by copolymerization of, (a) 5 to 95 parts by weight of a mixture comprising, (i) 50 to 95 parts by weight of a member selected from the group consisting of styrene, α-methylstyrene, halogen or alkyl ring-substituted styrene, C1-C8-alkyl methacrylate, C1-C8-alkyl acrylate, and mixtures thereof, and (ii) 5 to 50 parts by weight of a member selected from the group consisting of acrylonitrile, methacrylonitrile, C1-C8-alkyl methacrylate, C1-C8-alkyl acrylate, maleic anhydride, C1-C4-alkyl- and/or phenyl-N-substituted maleinimide and mixtures thereof, and (b) 5 to 95 parts by weight of a rubber graft base with a glass transition temperature below −10° C.; D. 0.5 to 20 parts by weight of a phosphorus compound of formula (I) in which R1, R2, R3 and R4 independently of each other mean C1-C8 alkyl optionally substituted by halogen, C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl optionally substituted by halogen and/or alkyl in each case, n independently of each other means 0 or 1, q independently of each other means 0, 1, 2, 3 or 4, N means 0.1 to 5, R5 and R6 independently of each other mean C1-C4-alkyl or halogen, and Y means C1-C7-alkylidene, C1-C7-alkylene, C5-C12-cycloalkylene, C5-C12-cycloalkylidene, —O—, —S—, —SO—, —SO2— or —CO—; E. 0.05 to 5 parts by weight of fluorinated polyolefin; and F. 0.1 to 50 parts by weight of a finely divided inorganic compound which is a mixture of Al2O3 and AlO(OH), said finely divided inorganic compound having an average particle diameter <200 nm.
Priority Claims (1)
Number |
Date |
Country |
Kind |
197 34 661 |
Aug 1997 |
DE |
|
CROSS REFERENCE TO RELATED PATENT APPLICATIONS
The present patent application claims the right of priority under 35 U.S.C. 119 and 35 U.S.C. 365 of International Application No. PCT/EP98/04734, filed Jul. 29, 1998, which was published in German as International Patent Publication No. WO 99/07782 on Feb. 18, 1999, which is entitled to the right of priority of German Patent Application No. 197 34 661.8, filed Aug. 11, 1997.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/EP98/04734 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/07782 |
2/18/1999 |
WO |
A |
US Referenced Citations (13)
Foreign Referenced Citations (4)
Number |
Date |
Country |
363 608 |
Apr 1990 |
EP |
0 767 204 |
Apr 1997 |
EP |
59-202240 |
Nov 1984 |
JP |
9627600 |
Sep 1996 |
WO |