C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 8/00 (2006.01) C09D 201/02 (2006.01)
Patent
CA 2476433
A curable, aqueous film-forming composition is provided that includes a polymeric binder comprising reactive functional groups, a crosslinking agent having at least two functional groups that are reactive with the functional groups of the polymeric binder, and a copolymer flow control agent comprising at least 30 mol % of residues containing alternating residues from a donor monomer and from an acceptor monomer. The copolymer contains at least 15 mol % of an isobutylene type donor monomer. A multi-component composite coating composition is also provided, comprising a base coat deposited from a pigmented film-forming composition and a transparent topcoat applied over the base coat. The topcoat is deposited from the film-forming composition described above.
L'invention concerne une composition filmogne aqueuse durcissable, qui comprend un liant polym~rique pr~sentant des groupes fonctionnels r~actifs; un agent de r~ticulation ayant au moins deux groupes fonctionnels qui r~agissent avec les groupes fonctionnels du liant polym~rique; et un agent de r~gulation de la fluidit~ du copolymre contenant au moins 30 moles pour cent de r~sidus comprenant des r~sidus altern~s provenant d'un monomre donneur et d'un monomre accepteur. Le copolymre contient au moins 15 moles pour cent d'un monomre donneur de type isobutylne. L'invention concerne en outre une composition de revÚtement composite ~ plusieurs constituants, qui comprend une couche de base obtenue par d~pÙt d'une composition filmogne pigment~e et une couche de finition transparente appliqu~e sur la couche de base. La couche de finition est obtenue par d~pÙt de ladite composition filmogne.
Coleridge Edward R.
Grolemund Mary E.
Martin Roxalana L.
Tucker Mark A.
Borden Ladner Gervais Llp
Ppg Industries Ohio Inc.
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