Aqueous functional fluids based on polymers

Details Aqueous functional fluids based on polymers Aqueous functional fluids based on polymers

C - Chemistry, Metallurgy

10

M

253/133

C10M 173/02 (2006.01) C08F 220/12 (2006.01)

Patent

CA 1240663

Abstract of the disclosure: Aqueous functional fluids, in particular hy- draulic and metal-working fluids, containing a copoly- mer which is prepared by emulsion or solution copoly- merization, initiated by free radicals, of unsaturated, copolymerizable monomers, the copolymers being built up from: a) 1 - 60% by weight of ethylenically unsaturated car- boxylic acids, b) 0.5 - 30% by weight of a surface-active unsaturated ester, c) 30 - 85% by weight of methacrylic acid esters or acrylic acid esters of aliphatic (C1-C18)- alcohols, d) 0 - 40% by weight of other ethylenically unsaturated comonomers, e) 0 - 3% by weight of polyethylenically unsaturated compounds, and f) 0 - 5% by weight of molecular weight regulators, and, if appropriate, the free acid groups of the copolymers subsequently having been partly or com- pletely neutralized by addition of bases, and con- verted into water-soluble or colloidally water- dispersible copolymer salts.

473857

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