Paint compositions

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 7/00 (2006.01) C09D 5/02 (2006.01) C09D 133/06 (2006.01)

Patent

CA 2371687

The present invention concerns a paint composition which comprises a binder, a coalescent agent and optionally admixtures and auxiliary agents known per se. The film forming agent comprises a glycidyl ether or glycidyl ester or a mixture thereof, the hydrocarbyl residue of the alcohol or carboxylic acid, respectively, of the ether or ester comprising a linear or branched, saturated or unsaturated hydrocarbon having 3 to 20 carbon atoms. The invention further concerns a method of accelerating the hardening of paint compositions and a novel method of preparing glycidyl esters. The film forming agents used in the invention lower the film forming temperature better than conventional reactive film forming agents. Due to low volatility the compounds are suitable for no- VOC applications.

L'invention concerne une composition de peinture qui comprend un liant, un agent de coalescence et éventuellement des adjuvants et des agents auxiliaires connus per se. L'agent filmogène comprend un glycidyl-ester ou un glycidyl-éther ou un mélange de ceux-ci. Le résidu hydrocarbyle de l'alcool ou de l'acide carboxylique de l'éther ou de l'ester renferme, respectivement, un groupe hydrocarboné linéaire ou ramifié, saturé ou insaturé, contenant 3 à 20 atomes de carbone. L'invention concerne également un procédé permettant d'accélérer le durcissement des compositions de peinture et un nouveau procédé permettant de préparer des glycidyl-esters. Les agents filmogènes utilisés dans l'invention abaissent davantage la température de formation de film que les agents filmogènes réactifs classiques. Du fait de leur faible volatilité, ces composés peuvent être utilisés pour produire des applications dépourvues de contaminants organiques volatils.

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