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US 5,209,986 AGranted
Polymer composites
AssigneeRohm GmbH Chemische Fabrik
InventorsJers-Dieter Fischer, Thomas Rhein, Manfred Stickler
Life of this patent
Estimating the term…
Abstract
Polymer blends comprising: (A) 99.5-0.5 wt. % of a copolymer comprising: a1) 50-99 wt. % of C.sub.1 -C.sub.10 -alkyl- or C.sub.5 -C.sub.8 -cycloalkylethacrylates or mixtures thereof, a2) 0.5-20 wt. % of maleic acid anhydride or fumaric acid anhydride or maleimide, and a3) 0.5-40 wt. % of vinyl aromatics which may be unsubstituted or substituted on the aromatic ring with 1 or 2 alkyl groups of 1 to 4 carbon atoms; and (B) 0.5-99.5 wt. % of a copolymer comprising: b) 99.5-50 wt. % of styrene and/or .alpha.-methyl styrene b2) 0.5-50 wt. % of acrylonitrile and/or methacrylonitrile; provide thermoplastic transparent molding compositions.
Claims5
A composite comprising:
- AA) a first layer comprising a polymer blend comprising:
- (A) a copolymer comprising:
- (a1) C.sub.1 -C.sub.10 -alkyl methacrylates, C.sub.5 -C.sub.8 -cycloalkyl methacrylates or mixtures thereof,
- (a2) maleic acid anhydride, fumaric acid anhydride or maleimide, and
- (a3) vinyl aromatics which may be unsubstituted or substituted on the aromatic ring by 1 or 2 C.sub.1 -C.sub.4 -alkyl groups, wherein the component (a1) is present in an amount of 50 to 99 wt. %, based on the total wt. of (A), the component (a2) is present in an amount of 0.5 to 20 wt. %, based on the total wt. of (A), and the component (a3) is present in an amount of 0.5 to 40 wt. %, based on the total wt. of (A), and
- (B) a copolymer comprising:
- (b1) styrene, .alpha.-methyl styrene or mixtures thereof, and
- (b2) acrylonitrile, methacrylonitrile or mixtures thereof,
- wherein said component (b1) is present in an amount of 99.5 to 50 wt. %, based on the total wt. of (B), and said component (b2) is present in an amount of 0.5 to 50 wt. %, based on the total wt. of (B);
- wherein said copolymer (A) is present in an amount of 0.5 to 99.5 wt. %, based on the total wt. of (A)+(B), and said copolymer (B) is present in an amount of 99.5 to 0.5 wt. %, based on the total wt. of (A)+(B);
- and
- BB) a second layer comprising a polymer blend comprising a polymerizate selected from the group consisting of polyalkyl(meth)acrylates, copolymers containing an amount of 50 to 100 wt. % of alkyl(meth)acrylate units and being different from said copolymers (A) and (B) of said polymer blend (AA), and copolymers containing an amount of 50 to 99.5 wt. % of styrene and/or .alpha.-methylstyrene units and being different from said copolymers (A) and (B) of said polymer blend (AA).
9 more elements
A composite comprising:
- AA) a first layer comprising a polymer blend comprising:
- (A) a copolymer comprising:
- (a1) C.sub.1 -C.sub.10 -alkyl methacrylates, C.sub.5 -C.sub.8 -cycloalkyl methacrylates or mixtures thereof,
- (a2) maleic acid anhydride, fumaric acid anhydride or maleimide, and
- (a3) vinyl aromatics which may be unsubstituted or substituted on the aromatic ring by 1 or 2 C.sub.1 -C.sub.4 -alkyl groups, wherein the component (a1) is present in an amount of 50 to 99 wt. %, based on the total wt. of (A), the component (a2) is present in an amount of 0.5 to 20 wt. %, based on the total wt. of (A), and the component (a3) is present in an amount of 0.5 to 40 wt. %, based on the total wt. of (A), and
- (B) a copolymer comprising:
- (b1) styrene, .alpha.-methyl styrene or mixtures thereof, and
- (b2) acrylonitrile, methacrylonitrile or mixtures thereof,
- wherein said component (b1) is present in an amount of 99.5 to 50 wt. %, based on the total wt. of (B), and said component (b2) is present in an amount of 0.5 to 50 wt. %, based on the total wt. of (B);
- wherein said copolymer (A) is present in an amount of 0.5 to 99.5 wt. %, based on the total wt. of (A)+(B), and said copolymer (B) is present in an amount of 99.5 to 0.5 wt. %, based on the total wt. of (A)+(B) and
- BB) a second layer comprising a polymer blend comprising a polymerizate selected from the group consisting of polyalkyl(meth) acrylates, copolymers containing an amount of 50 to 100 wt. % of alkyl(meth)acrylate units and being different from said copolymers (A) and (B) of said polymer blend (AA), and copolymers containing an amount of 50 to 99.5 wt. % of styrene and/or .alpha.-methylstyrene units and being different from said copolymers (A) and (B) of said polymer blend (AA);
- a plurality of said layers (AA) and (BB) being alternatively layered together to form a structure for a composite material.
9 more elements
Dependencies are inferred from the claim text.