Self-cross-linkable acrylic polymer containing hydroxyalkyl carb

Details Self-cross-linkable acrylic polymer containing hydroxyalkyl carb Self-cross-linkable acrylic polymer containing hydroxyalkyl carb

1985-02-06

1988-07-19

Henderson, Christopher

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

2041802, 2041814, 5253273, 5253282, 526301, C08F 800

Patent

active

047586320

ABSTRACT:
A self-cross-linkable acrylic polymer contains at least two hydroxyalkyl carbamate groups per molecule and may comprise the reaction product of an acrylic backbone polymer containing one or more suitable reactive groups and an amine containing one primary or secondary amine group and at least one hydroxyalkyl carbamate group or precursor thereof. Alternatively, the self-cross-linkable polymer may be obtained by polymerization of an acrylic polymerizable monomer containing at least one hydroxyalkyl carbamate group. The amine is joined to the monomer or backbone polymer by reaction of the primary or secondary amine group thereof with suitable reactive functional groups of the monomer or resin. A method of making the acrylic polymer, which is heat curable to provide a thermoset film or coating, comprises reacting the monomer or backbone polymer with an amine containing hydroxyalkyl carbamate groups or precursors thereof comprising hydrolyzable blocked primary amine groups. When present, the blocked groups are unblocked and reacted with a cyclic carbonate to form the hydroxyalkyl carbamate groups.

REFERENCES:
patent: 4100143 (1978-07-01), Wolf
patent: 4543276 (1985-09-01), Parekh
"Use of Urethane Glycols as Blocked Diisocyanates," Mikheev et al., Lakokras. Mater, Ikh Primen., 1983 (6), 5-6-abstract only from CA selects crosslinking Reactions, Issue 8, 1984.

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