Impact-resistance modified polymer compositions
OwnerHolger Warth, Gerwolf Quass +1inventors
InventorsHolger Warth, Gerwolf Quass, Dieter Wittmann
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Abstract
An impact resistance-modified polymer composition containing (A) at least one polyamide, (B) at least one graft copolymer, wherein the graft substrate is based on a diene rubber, (C) at least one compatibility promoter, (D) at least one vinyl copolymer and (E) very finely divided mineral particles with anisotropic particle geometry and moulded items produced therefrom.
Claims29
A polymer composition containing
- (A) at least one polyamide,
- (B) at least one graft copolymer, wherein the graft substrate is based on a diene rubber,
- (C) at least one compatibility promoter,
- (D) at least one vinyl copolymer, and
- (E) very finely divided mineral particles with anisotropic particle geometry.
A composition according to one of the preceding claims, wherein the graft substrate B.2 is a polybutadiene which may contain up to 30 wt. % (with respect to the graft substrate) of other monomers chosen from at least one of the group styrene, α-methylstyrene, acrylonitrile and methyl methacrylate.
A composition according to one of the preceding claims, wherein graft polymer B is present in an amount of 0.5 to 80 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein graft polymer B is present in an amount of 1 to 60 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein component C contains at least (a) a vinyl aromatic monomer chosen from the group C2-C12-alkyl (meth)acrylates, methacrylonitrile and acrylonitrile and (b) dicarboxylic anhydrides containing α,β-unsaturated components.
A composition according to one of the preceding claims, wherein component C is present in an amount of 0.5 to 50 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein component C is present in an amount of 1 to 30 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein component C is present in an amount of 2 to 10 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein component D consists of vinyl (co)polymers of at least one monomer from the group of vinyl aromatic compounds, vinyl cyanides, C1-C8-alkyl (meth)acrylates, unsaturated carboxylic acids and derivatives of unsaturated carboxylic acids.
A composition according to one of the preceding claims, wherein component D is present in an amount of 0 to 80 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein component D is present in an amount of 0 to 70 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein component E contains very finely divided mineral particles with an aspect ratio greater than 2.
A composition according to one of the preceding claims, wherein component E contains mineral particles which have a number average particle size, measured by a Coulter counter, of ≦10 μm and a ratio of average diameter to thickness (D/T) of 4 to 30.
A composition according to one of the preceding claims, wherein at least 98 wt. % of the particles contained in component E have an equivalent spherical volume diameter of less than 44 μm, measured by a Coulter counter.
A composition according to one of the preceding claims, wherein component E contains mineral oval or plate-shaped particles.
A composition according to one of the preceding claims, wherein component E is present in an amount of 0.1 to 50 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein component E is present in an amount of 0.2 to 20 wt. %, with respect to the composition.
A composition according to one of the preceding claims, wherein at least one additive chosen from the group of lubricants and mould release agents, nucleating agents, antistatic agents, stabilisers, colorants and pigments is present as further component F.
A composition according to one of the preceding claims, containing a flame retardant.
Dependencies are inferred from the claim text.