Claims
- 1. A polymer mixture comprising:
- (a) from 20 - 90% by weight, based on the mixture of (a) and (b), of a vinyl chloride polymer;
- (b) from 10 - 80% by weight, based on the mixture of (a) and (b), of a polycarbonate having at least 50% by weight of structural units of the formula ##STR8## wherein X is a single bond, --O--, --CO--, --SO.sub.2 --, C.sub.1 -C.sub.10 alkylene, C.sub.1 -C.sub.10 alkylidene, C.sub.5 -C.sub.10 cycloalkylene, C.sub.5 -C.sub.15 cycloalkylidene, C.sub.5 -C.sub.20 cycloalkyl-alkylidene or the group ##STR9##
- 2. A polymer mixture according to claim 1, which additionally contains up to 100% by weight based on (a) and (b) of a rubber.
- 3. A mixture as claimed in claim 1 comprising:
- (aa) from 30 - 90% by weight of a vinyl chloride homo- or copolymer which contains up to 30% by weight of at least one other vinyl compound;
- (bb) from 10 - 70% by weight of a polycarbonate of the formula ##STR10## wherein n = 30 - 100 or of a polycarbonate having at least 50% by weight of structural units of formula (2), the remainder consists of structural units of formula (2 a) ##STR11## and (c) from 10 - 50% by weight, based on the mixture of (a) and (b) of a rubber.
- 4. A mixture as claimed in claim 1 in which the polycarbonate (b) contains exclusively structural units of formula (1).
- 5. A mixture as claimed in claim 1 in which X is ##STR12##
- 6. A mixture as claimed in claim 1 in which up to 50% of the structural units of the polycarbonate (b) are derived from at least one member of the group consisting of
- 2,2-bis-(4-hydroxyphenyl)-propane,
- 2,2-bis-(3,5-dichloro-4-hydroxyphenyl)-propane,
- 2,2-bis-(3,5-dibromo-4-hydroxyphenyl)-propane,
- 1,1-bis-(4-hydroxyphenyl)-cyclohexane,
- .alpha.,.alpha.'-bis-(4-hydroxyphenyl)-p-diisopropylbenzene and
- 2,2-bis-(3-methyl-4-hydroxyphenyl)-propane.
- 7. A mixture as claimed in claim 1 in which component (a) has a K-value of from 50 to 80.
- 8. A mixture as claimed in claim 1 in which component (a) contains up to 30% by weight of at least one member of the group consisting of:
- vinyl acetate, vinyl propionate, vinyl benzoate, acrylic and methacrylic acid esters containing 1 - 10 carbon atoms in the alcohol group, maleic acid esters and semi-esters, ethylene propylene, vinyl ethers, acrylonitrile, maleic imides and vinylidene chloride.
- 9. A mixture as claimed in claim 2 in which the rubber is a modified rubber consisting of a graft polymer prepared by polymerising styrene, .alpha.-methylstyrene, acrylonitrile, methacrylonitrile, acrylic or methacrylic acid alkyl esters containing 1 - 10 carbon atoms in the alcohol group or mixtures thereof in the presence of a polybutadiene or a copolymer of butadiene with styrene, .alpha.-methylstyrene, acrylonitrile, methacrylonitrile or acrylic or methacrylic acid esters containing 1 - 10 carbon atoms in the alcohol group.
Priority Claims (1)
Number |
Date |
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2402176 |
Jan 1974 |
DEX |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 540,982 filed Jan. 14, 1975 and now abandoned.
US Referenced Citations (9)
Continuation in Parts (1)
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Number |
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540982 |
Jan 1975 |
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