Polymer mixt. for use in coatings, e.g. can linings, etc. - comprises an acrylate! polymer contg. di:hydro-2,5-furandione gps., and components contg. hydroxyl and epoxy gps., and catalyst

摘要

A polymer mixt. (I) contains two reactive polymers (a) and (b), a hydroxyl gp.-free organic solvent and a catalyst; wherein (a) is an acrylate copolymer of formula (A), and (b) is an epoxy polyether of formula (B). In (A) V = -H, -CH3, -COOH and -COOCH3 and m is an integer of 1-200, Z1 = -COO-(CH2)0-17-CH3, Z2 = phenyl or o-, m-, or p-, substd. alkyl phenyl gp. Z3 = -C=N, -CONH2, -CON(alkyl)s, and pyridyl gp. Z4 = -COOH, -alkyl SO3H and -aryl SO3H, wherein the acrylate copolymer has a main chain partially substd. by -CH2-Gp. and at least 2 dihydro-2,5-furanedione gps., and at least one Z4 gp. per macromolecule. IN (B) n is an integer of 1-15, and the epoxy polyether is based on bisphenol-A and has epoxy equiv. of 250-1000g polymer/mole per epoxy gp., or is a mixt. of different epoxy resins of the same equiv. as above, and in (a)+(b) at least one, but not more than two, epoxy gps. exist per each dihydro-2, 5-furandiene gp. in (a). -