Copolymers, preparation thereof and use as wetting agents...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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Details

C526S318000, C526S318200, C526S329700, C526S307200, C526S307500

Reexamination Certificate

active

11225397

ABSTRACT:
The invention relates to copolymers, suitable as wetting agents and dispersants, obtainable by copolymerizing (a) 1 to 80 mol % of at least one ethylenically unsaturated 1,2-dicarboxylic acid derivative, (b) 2 to 80 mol % of at least one unsaturated monocarboxylic acid derivative having 12 to 30 carbon atoms, (c) 1 to 90 mol % of at least one polyalkyleneoxyallyl ether having a number-average molecular weight of up to 5000 g/mol and (d) 0 to 30 mol % of further, unsaturated monomers; and also reaction products of the copolymers with ammonia, amines, water, alcohols, amino alcohols and/or alkali metal hydroxides or alkaline earth metal hydroxides. The invention further relates to a process for preparing the copolymers and to their use as wetting agents and dispersants in coating materials and moulding compounds.

REFERENCES:
patent: 3663484 (1972-05-01), Broecker
patent: 5102742 (1992-04-01), Hoflan et al.
patent: 5352729 (1994-10-01), Birkhofer et al.
patent: 5585427 (1996-12-01), Schimmel et al.
patent: 5792729 (1998-08-01), Harrison et al.
patent: 6336942 (2002-01-01), Danisch et al.
patent: 4214011 (1993-11-01), None
patent: 1 142 972 (2001-10-01), None
patent: 1142972 (2001-10-01), None
patent: 1093081 (1967-01-01), None

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