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US 6,682,809 B2Granted
Method for preparing a multi-layered polymeric composite and a multi-layered composite produced thereby
AssigneeRohm and Haas Company
InventorPaul Ralph Van Rheenen
Life of this patent
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Abstract
The present invention relates to: a method of preparing a capstock layer that includes a comb copolymer; a method of preparing a multi-layered polymeric composite, one layer of which is a capstock layer; and a capstock layer and a multi-layered composite formed, respectively, thereby.
Claims5
A capstock composition comprising a comb copolymer:
- wherein said comb copolymer comprises a backbone and at least one graft segment;
- and
- wherein:
- (i) said graft segment and said backbone are in a weight ratio from 30:70 to 60:40;
- (ii) said backbone is immiscible with said graft segment at room temperature;
- (iii) said backbone has a glass transition temperature of −65° C. to 10° C. and
- (iv) said graft segment has a glass transition temperature of 70° C. to 180° C.
4 more elements
Dependencies are inferred from the claim text.