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US 2002/0058752 A1Published application
Method of toughening thermoplastic polymers and thermoplastic compositions produced thereby
AssigneeRohm and Haas Company
InventorsWillie Lau, Paul Ralph Van Rheenen
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Abstract
A method of forming a toughened article from a blend of a thermoplastic polymer and a comb copolymer is disclosed, along with the toughened article produced thereby. Compositions such as solids blends and melt blends, including a thermoplastic polymer and a comb copolymer, are also disclosed.
Claims13
A method comprising the steps of
- (a) forming a solids blend comprising a thermoplastic polymer and a comb copolymer;
- (b) heating and mixing said solids blend to form a melt blend;
- (c) shaping said melt blend to form an article;
- and
- (d) cooling said article to room temperature;
- wherein said comb copolymer comprises a backbone and at least one graft segment;
- wherein said graft segment does not contain, as polymerized units, lactone monomer;
- and
- wherein said comb copolymer is present in an amount sufficient that said article has an impact resistance energy increased at least 15 percent compared to a second article formed identically, absent said comb copolymer.
6 more elements
A toughened article:
- wherein said article comprises a thermoplastic polymer and a comb copolymer;
- wherein said comb copolymer comprises a backbone and at least one graft segment;
- wherein said graft segment of said comb copolymer does not contain, as polymerized units, lactones;
- and
- wherein said comb copolymer is present in an amount sufficient that said article has an impact resistance energy increased at least 15 percent compared to a second article formed identically, absent said comb copolymer.
2 more elements
Dependencies are inferred from the claim text.