Patent ID: 7968648

Claim:
A method of use of a heat-stable polymer comprising: blending the heat-stable polymer with one or more other polymers to create a polymer blend that is more durable than the one or more other polymers; and incorporating the polymer blend into an article of manufacture to make a durable article of manufacture; wherein the heat-stable polymer has repeating units of formula 1 or 2; wherein one of R 1 and R 2 together with one of R 3 and R 4 form a polymer backbone group of where each Y is independently O or S; and Z is a bivalent radical of from 1 to 100 atoms; the other of R 1 and R 2 and the other of R 3 and R 4 are each —OR 6 , where each R 6 is independently H, (C 1 -C 6 )alkyl, (C 1 -C 6 )alkylcarbonyl, phenyl, —S(O)(O)(OR 7 ), —P(O)(OR 7 )(OR 7 ), —P(O)(N(R 7 ) 2 )(OR 7 ), —P(O)(N(R 7 ) 2 )(N(R 7 ) 2 ), —P(O)(R 7 ) 2 , —P(O)(OR 7 )(R 7 ), —P(O)(N(R 7 ) 2 )(R 7 ), or —Si(R 7 ) 3 ; each R 5 is independently H, halo, (C 1 -C 4 )alkyl, phenyl, phenyl(C 1 -C 4 )alkyl, hydroxy, (C 1 -C 4 )alkoxy, (C 1 -C 4 )alkylcarbonyl, (C 1 -C 4 )alkylcarbonyloxy, phenyloxy, —OS(O)(O)(OR 7 ), or —OP(O)(OR 7 )(OR 7 ); each R 7 is independently H, (C 1 -C 6 )alkyl, or phenyl; X is a bivalent radical of from 1-100 atoms, and p is 0 or 1; any alkyl or phenyl can optionally be substituted with one or more halo, hydroxy, nitro, mercapto, cyano, (C 1 -C 6 )alkoxy, trifluoromethyl, oxo, —N(R 8 ) 2 , or —OC(O)R 8 , wherein each R 8 is independently H or (C 1 -C 6 )alkyl; and wherein the repeating units of formula 1 or 2 comprise 0.1 to 65% by weight of the polymer blend; and wherein the one or more other polymers comprise polyisobutylene, polyethylene, or polypropylene.