Crosslinking component for paint binders and process for produci

Details Crosslinking component for paint binders and process for produci Crosslinking component for paint binders and process for produci

1984-07-09

1985-06-11

Phynes, Lucille M.

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

Synthetic resins

From ketone or ketene reactant

524599, 524901, 525398, 525472, 528230, 528243, 528246, C08G 218, C08G 1600

Patent

active

045230072

ABSTRACT:
A process for producing improved crosslinking components for paint binders which can be crosslinked through transesterification is described. The process is characterized in that an ester of malonic or cyano-acetic acid or aceto-acetic acid is reacted in a KNOEVENAGEL-reaction with a carbonyl compound, preferably with formaldehyde, and the reaction products are polymerized, optionally utilizing free-radical initiators, to provide a polymer having a molecular weight of between about 300 and 6000. The crosslinking components prepared according to the invention provide an unsaponifiable base structure and permit the preparation of products with high functionality. The crosslinking components are preferably utilized in binder systems for cathodically depositable paints.

REFERENCES:
patent: 3839497 (1974-10-01), Ishii et al.
patent: 4172193 (1979-10-01), Marx et al.

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