Basecoat/clearcoat method of coating utilizing an anhydride addi

Details Basecoat/clearcoat method of coating utilizing an anhydride addi Basecoat/clearcoat method of coating utilizing an anhydride addi

1987-08-24

1989-01-17

Lusignan, Michael

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

427409, 525207, 525223, B05D 136, B05D 700, C08L 3314, C08L 3500

Patent

active

047987464

ABSTRACT:
Disclosed is a method of coating comprising the steps of: (I) coating a substrate with one or more applications of a pigmented basecoating composition comprising a thermoplastic, non-crosslinked, film-forming polymer having at least two functional groups per molecule which functional groups are co-reactive with acid anhydride moieties, to which basecoating composition has been added within 24 hours prior to coating the substrate, a carboxylic acid anhydride component having at least two cyclic anhydride groups in an amount so as to provide a ratio of equivalents of anhydride groups to equivalents of the co-reactive functional groups of at least 0.10:1.00 to form a basecoat; and (II) coating the basecoat with one or more applications of a transparent, crosslinking, topcoating composition comprising a crosslinkable, film-forming material and a crosslinking agent for the crosslinkable, film-forming material to form a transparent topcoat.

REFERENCES:
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patent: 4101606 (1978-07-01), Cenci et al.
patent: 4145513 (1979-03-01), Dalibor
patent: 4163739 (1979-08-01), Dalibor
patent: 4177183 (1979-12-01), Dalibor
patent: 4308188 (1981-12-01), Wicks et al.
patent: 4415697 (1983-11-01), Peng et al.
patent: 4452948 (1984-06-01), Marrion et al.
patent: 4620994 (1986-11-01), Suss et al.

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