Copolymers containing hydroxyl and carboxyl groups by reacting g

Details Copolymers containing hydroxyl and carboxyl groups by reacting g Copolymers containing hydroxyl and carboxyl groups by reacting g

1995-04-19

1997-09-02

Sellers, Robert E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526308, 5263184, 52631847, 52631844, 5263186, 528393, C08F22006, C08F22028

Patent

active

056632657

ABSTRACT:
Low-viscosity copolymers useful in coating compositions, containing hydroxyl and carboxyl groups are obtained by free-radical polymerization of A) from 3 to 50% by weight of one or more glycidyl esters of aliphatic saturated monocarboxylic acids having a tertiary or quaternary .alpha. carbon atom, and B) from 97 to 50% by weight of at least two olefinically unsaturated copolymerizable monomers of which at least one contains at least one COOH group and at least one is sterically hindered, the quantity of COOH groups in component B exceeding the quantity of epoxy groups in component A to such an extent that the resulting copolymer has an acid number of at least 15 mg of KOH/g.

REFERENCES:
patent: 3330814 (1967-07-01), Vasta et al.
patent: 3644255 (1972-02-01), Thompson
patent: 4123401 (1978-10-01), Berghmans et al.
patent: 4350809 (1982-09-01), Fischer et al.
patent: 4710556 (1987-12-01), Plum
patent: 5136004 (1992-08-01), Bederke et al.
patent: 5153257 (1992-10-01), Dalibor
patent: 5179157 (1993-01-01), Dalibor
patent: 5180773 (1993-01-01), Dalibor

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