Download The FREE PDF Converter and create PDF files from any application with PDF Creator. Best of all, PDF Creator is absolutely free for anyone to use.
![]()
Molding composition consisting of a blend of(a) 70 weight percent to 30 weight percent copolyester consisting of repeating units from terephthalic acid, repeating units from 1,4-cyclohexanedimethanol present in the amount of 25 to 90 mol% and repeating units from a second glycol having 2 to 6 carbon atoms present in the amount of 75 to 10 mol%, wherein the total mol% of glycol is equal to 100 mol%, and(b) 30 weight percent to 70 weight percent thermoplastic rubber-modified vinyl aromatic polymer composition having a notched Izod impact strength at 23° C. Of at least 3.5 ft./lb./in.
TECHNICAL FIELDThe present invention is directed to high-impact molding compositions which are blends of copolyesters based on poly(1,4-cyclohexylenedimethylene terephthalate) and rubber-modified styrene-maleic anhydride copolymers having at least two rubbery additives that were present during the polymerization of the copolymers.BACKGROUND ARTU.S. 3,919,354 discloses impact resistant polymers of styrene/maleic anhydride and similar monomers which are prepared by providing a solution of rubber in styrene, initiating polymerization and adding maleic anhydride.European Patent Application No. 81305750.2, filed Dec. 4, 1981, (U.S.
![]()
4,486,570) discloses rubber-modified styrene-maleic anhydride copolymers having at least two different rubbery additives which are present during the polymerization of the copolymers, which preferably represents the rubber-modified styrene-maleic anhydride copolymer used in the present invention.U.S.
![]() Comments are closed.
|
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
January 2023
Categories |