Flame-retardant, high-impact polycarbonate molding compounds
First Claim
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1. Thermoplastic molding compounds consisting ofA) 50 to 96.5 parts by weight of one or more thermoplastic, halogen-free, aromatic polycarbonates based on diphenols corresponding to ##STR7## wherein A is a single bond, C1-5 alkylene, C2-5 alkylidene, C5-6 cycloalkylidene, --S-- or SO2B) 3.5 to 25 parts by weight of one or more halogen-free graft polymers ofB.1) 5 to 90 parts by weight, based on B), of a mixture ofB.1.1) 50 to 95% by weight styrene, α
- -methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof andB.1.2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate, n-butyl acrylate, t-butyl (meth)acrylate or mixtures thereof onB.2) 95 to 10 parts by weight, based on B), of a rubber having a glass temperature TG of ≦
10°
C. selected from the group consisting of butadiene, butadiene/styrene copolymer, polyisoprene, EPDM and silicone rubbers, andC) 0 to 40 parts by weight of a halogen-free, thermoplastic copolymer ofC.1) 50 to 95% by weight styrene, α
-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof,C.2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate or mixtures thereof, the sum of the parts by weight of A)+B)+optionally C) having to amount to 100 parts by weight, andD) 1 to 20 parts by weight, based on 100 parts by weight of A)+B)+optionally C), of a halogen-free phosphorus compound corresponding to ##STR8## in which R1, R2 and R3 independently of one another represent C1 -C8 alkyl or C6 -C20 aryl and n=0 or 1, andE) 0.05 to 5 parts by weight, based on 100 parts by weight of A)+B)+optionally C), of a tetrafluoroethylene polymer having average particle sizes of 0.05 to 1000 μ
m, a density of 1.2 to 2.3 g/cm3 a fluorine content of 65 to 76% by weight.
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Abstract
The invention relates to polycarbonate molding compounds consisting of halogen-free polycarbonates, graft polymers, phosphorus compounds, tetrafluoroethylene polymers and, optionally, copolymers and/or, optionally, other additives known per se and a process for their production.
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Citations
20 Claims
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1. Thermoplastic molding compounds consisting of
A) 50 to 96.5 parts by weight of one or more thermoplastic, halogen-free, aromatic polycarbonates based on diphenols corresponding to ##STR7## wherein A is a single bond, C1-5 alkylene, C2-5 alkylidene, C5-6 cycloalkylidene, --S-- or SO2 B) 3.5 to 25 parts by weight of one or more halogen-free graft polymers of B.1) 5 to 90 parts by weight, based on B), of a mixture of B.1.1) 50 to 95% by weight styrene, α - -methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof and
B.1.2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate, n-butyl acrylate, t-butyl (meth)acrylate or mixtures thereof on B.2) 95 to 10 parts by weight, based on B), of a rubber having a glass temperature TG of ≦
10°
C. selected from the group consisting of butadiene, butadiene/styrene copolymer, polyisoprene, EPDM and silicone rubbers, andC) 0 to 40 parts by weight of a halogen-free, thermoplastic copolymer of C.1) 50 to 95% by weight styrene, α
-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof,C.2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate or mixtures thereof, the sum of the parts by weight of A)+B)+optionally C) having to amount to 100 parts by weight, and D) 1 to 20 parts by weight, based on 100 parts by weight of A)+B)+optionally C), of a halogen-free phosphorus compound corresponding to ##STR8## in which R1, R2 and R3 independently of one another represent C1 -C8 alkyl or C6 -C20 aryl and n=0 or 1, and E) 0.05 to 5 parts by weight, based on 100 parts by weight of A)+B)+optionally C), of a tetrafluoroethylene polymer having average particle sizes of 0.05 to 1000 μ
m, a density of 1.2 to 2.3 g/cm3 a fluorine content of 65 to 76% by weight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18)
- -methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof and
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16. A thermoplastic molding compound consisting of
A) 50 to 96.5 parts by weight of one or more thermoplastic, halogen-free aromatic polycarbonates based on diphenols corresponding to ##STR9## wherein A is a single bond, C1-5 alkylene, C2-5 alkylidene, C5-6 cycloalkylidene, --S-- or --SO2 B) 4.5 to 10 parts by weight of one or more halogen-free graft polymers of B.1) 5 to 90 parts by weight, based on B), of a mixture of B.1.1) 50 to 95% by weight styrene, α - -methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof and
B.1.2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate, n-butyl acrylate, t-butyl (meth)acrylate or mixtures thereof on B.2) 95 to 10 parts by weight, based on B), of a rubber having a glass temperature Tg of ≦
10°
C. selected from the group consisting of butadiene, butadiene/styrene copolymer, polyisoprene, EPDM and silicone rubbers, andC) 0 to 40 parts by weight of a halogen-free, thermoplastic copolymer of C1) 50 to 95% by weight styrene, α
-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof, andC2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate or mixtures thereof, the sum of the parts by weight of A)+B)+optionally C) having to amount to 100 parts by weight, and D) 1 to 20 parts by weight, based on 100 parts by weight of A)+B)+optionally C), of a halogen-free phosphorus compound corresponding to ##STR10## in which R1, R2 and R3 independently of one another represent C1 -C8 alkyl or C6 -C20 aryl and n=0 or 1, and E) 0.05 to 5 parts by weight, based on 100 parts by weight of A)+B)+optionally C), of a tetrafluoroethylene polymer having average particle sizes of 0.05 to 1000 μ
m, a density of 1.2 to 2.3 g/cm3 and a fluorine content of 65 to 76% by weight. - View Dependent Claims (19)
- -methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof and
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17. A thermoplastic molding compound consisting of
A) 60 to 96 parts by weight of one or more thermoplastic, halogen-free aromatic polycarbonates based on diphenols corresponding to ##STR11## wherein A is a single bond, C1-5 alkylene, C2-5 alkylidene, C5-6 cycloalkylidene, --S-- or SO2 B) 4.0 to 15 parts by weight, of one or more halogen-free graft polymers of B.1) 5 to 90 parts by weight, based on B), of a mixture of B.1.1.) 50 to 95% by weight styrene, α - -methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixture thereof and
B.1.2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate, n-butyl acrylate, t-butyl (meth) acrylate or mixtures thereof on B.2) 95 to 10 parts by weight, based on B), of a rubber having a glass temperature Tg of ≦
10°
C. selected from the group consisting of butadiene, butadiene/styrene copolymer, polyisoprene, EPDM and silicone rubbers, andC) 0 to 40 parts by weight of a halogen-free, thermoplastic copolymer of C.1) 50 to 95% by weight styrene, α
-methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixtures thereof, andC.2) 50 to 5% by weight (meth)acrylonitrile, methyl methacrylate or mixtures thereof, the sum of the parts by weight of A)+B)+optionally C) having to amount to 100 parts by weight, and D) 1 to 20 parts by weight, based on 100 parts by weight of A)+B)+optionally B), of a halogen-free phosphorus compound corresponding to ##STR12## in which R1, R2 and R3 independently of one another represent C1 -C8 alkyl or C6 -C20 aryl and n=0 to 1, E) 0.05 to 5 parts by weight, based on 100 parts by weight of A)+B)+optionally C), of a tetrafluoroethylene polymer having average particle sizes of 0.05 to 1000 μ
m, a density of 1.2 to 2.3 g/cm3 and a fluorine content of 65 to 76% by weight. - View Dependent Claims (20)
- -methyl styrene, nucleus-substituted styrene, methyl methacrylate or mixture thereof and
Specification