New acrylate ester polymers for mfg. mouldings of fibre or textile reinforced curable resins - contg. ammonium and polyoxyalkylene gps. obtd. by transesterifying alkyl acrylate polymers and reacting with carboxylic acids for emulsifiers for mould release agents

摘要

New polymers (I) contg. ammonium and polyoxyalkylene gps. are obtd. by (a) transesterifying 1-8C alkyl acrylate polymers (II) with tert. alkanol amines (III) and polyoxyalkylene alcohols (IV) at 70-170 deg. C in a transesterification catalyst and a solvent, using a (III:(IV) molar ratio of 1:9 - 9:1, so 10-70% of the ester gps. are transesterified; and (b) reacting the prods. with carboxylic acids or R6- X (R6 = 1-4C alkyl or benzyl; and X = halogen) at 20-140 deg. C, opt. under pressure. (II) are prepd. by radical polymerisation, opt. with up to 50% of the acrylate ester replaced by the corresp. methacrylate ester. (III) are of formula (IIA) or (IIIB): R1 = (CH2)q, CH-R4-CH2 or (CnH2n-O)m-Cp-H2-p; R4 = 1-16C alkyl; m = 1-20; n, p and q = 2-4; and R2 and R3 = 1-18C alkyl. (IV) are of formula R5-O(Cr-H2-r-O)sH (IVA): R5 = 1-6C alkyl; r = 2-4, with an average value of 2-2.5; and s = 5-200. 20-50% of the alkyl ester gps. are transesterified. The (III):(VI) molar ratio is 1:3 - 3:1. (IV) has R5 = 1-4C alkyl and r = 2-2.3. Step (b) is effected with a 4-8C carboxylic acid. USE - (I) are useful as emulsifiers for preparing aq. emulsions of mould release agents, esp. for use in the mfr. of mouldings based on opt. fibre- or textile reinforced curable resins (claimed), and for preparing printing ink emulsions and textile antistatic compsns.