| US 7,541,421 B2 | ||
| Poly(arylene ether) copolymer | ||
| Alvaro Carrillo, Delmar, N.Y. (US); Erik René Delsman, Breda (Netherlands); Hua Guo, Selkirk, N.Y. (US); Alexey Kruglov, Glenmont, N.Y. (US); and Edward N. Peters, Lenox, Mass. (US) | ||
| Assigned to Sabic Innovative Plastics IP B.V., (Netherlands) | ||
| Filed on Dec. 08, 2005, as Appl. No. 11/298,182. | ||
| Prior Publication US 2007/0135609 A1, Jun. 14, 2007 | ||
| Int. Cl. C08G 61/02 (2006.01); C08G 65/38 (2006.01) | ||
| U.S. Cl. 528—219 [528/86] | 19 Claims |
| 1. A poly(arylene ether) copolymer,
wherein the poly(arylene ether) copolymer is the product of oxidative copolymerization of monomers comprising a monohydric
phenol and a dihydric phenol;
wherein the monohydric phenol consists of 2,6-dimethylphenol and the dihydric phenol consists of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane;
wherein the poly(arylene ether) copolymer has an intrinsic viscosity of about 0.04 to about 0.15 deciliter per gram, measured
at 25° C. in chloroform;
wherein the poly(arylene ether) comprises, on average, about 1.8 to about 2 hydroxyl groups per molecule; and
wherein the poly(arylene ether) copolymer comprises about 10 to about 70 mole percent of copolyrner chains comprising a terminal
unit derived from the dihydric phenol; and
wherein the poly(arylene ether) comprises about 0.5 to about 1.5 weight percent of units derived from 3,3′5,5′-tetramethyl-4,4′-biphenol.
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