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US 2003/0119986 A1Published application
ABS compositions with improved property combinations
AssigneeBayer Aktiengesellschaft
InventorHerbert Eichenauer
Life of this patent
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Abstract
A thermoplastic molding composition that features a combination of extremely good toughness, good processability, adjustable surface gloss, good inherent color and reduced opacity is disclosed. The composition contains A) a graft rubber that is the product of free-radical emulsion polymerization using a peroxodisulfate initiator, B) a graft rubber that is the product of free-radical emulsion polymerization using an azo compound initiator and C) a graft polymer that is the product of solution, bulk or suspension polymerization.
Claims23
A thermoplastic molding composition comprising
- A) at least one graft rubber that is the product of free-radical emulsion polymerization of at least one vinyl monomer in the presence of at least one rubber a) present in latex form having a glass transition temperature below 0° C. using at least one peroxodisulfate compound as initiator,
- B) at least one graft rubber that is the product of free-radical emulsion polymerization of at least one vinyl monomer in the presence of at least one rubber b) present in latex form having a glass transition temperature below 0° C. using at least one azo compound as initiator,
- C) at least one graft polymer that is the product of solution, bulk or suspension polymerization of styrene and acrylonitrile grafted phase in a weight ratio of 90:10 to 50:50 therebetween, in the presence of a rubber, wherein the rubber contains in copolymerized form 0 to 50 wt. % of a vinyl monomer and wherein the weight ratio of polymerized and grafted monomers to the rubber is 50:50 to 97:3.
A thermoplastic molding composition comprising
- A) at least one graft rubber that is the product of free-radical emulsion polymerization of styrene and acrylonitrile forming a grafted phase in a weight ratio of 90:10 to 50:50 therebetween in the presence of at least one butadiene rubber present in latex form, using at least one peroxodisulfate compound as initiator,
- B) at least one graft rubber that is the product of free-radical emulsion polymerization of styrene and acrylonitrile forming a grafted phase in a weight ratio of 90:10 to 50:50 therebetween, in the presence of at least one butadiene rubber present in latex form, using at least one azo compound as initiator,
- C) at least one graft polymer that is the product of solution, bulk or suspension polymerization of styrene and acrylonitrile forming a grafted phase in a weight ratio of 90:10 to 50:50 therebetween, in the presence of a rubber, wherein the rubber contains in copolymerized form 0 to 50 wt. % of a vinyl monomer and wherein the weight ratio of polymerized and grafted monomers to rubber is 70:30 to 95:5, and optionally
- D) at least one thermoplastic rubber-free polymer that is the product of polymerization of styrene and acrylonitrile forming a copolymer in a weight ratio of 90:10 to 50:50 therebetween.
1 more element
Dependencies are inferred from the claim text.