Thermosetting powder compositions

Details Thermosetting powder compositions Thermosetting powder compositions

C - Chemistry, Metallurgy

08

L

C08L 67/00 (2006.01)

Patent

CA 2609033

The invention relates to thermosetting powder compositions which give coatings proving remarkable weatherability, excellent mechanical properties and an outstanding flow containing a binder which comprises a mixture of amorphous polyesters (A) containing from 50 to 100 mol % of isophthalic acid and from 70 to 100 mol % of neopentyl glycol, and (B) which comprises from 75 to 100 mol % of at least one straight-chain saturated di-carboxylic aliphatic acid having from 4 to 14 carbon atoms and from 75 to 100 mol % of at least one branched chain aliphatic diol.

L'invention concerne des compositions de poudre thermodurcissables permettant d'obtenir des revêtements présentant une résistance aux intempéries remarquable, d'excellentes propriétés mécaniques et un flux extraordinaire et comprenant un liant renfermant un mélange de polyesters amorphes (A) comprenant entre 50 et 100 mol % d'acide isophtalique et entre 70 et 100 mol % de glycol néopentyl et (B) comprenant entre 75 et 100 mol % d'au moins un acide aliphatique dicarboxylique saturé à chaîne droite comprenant entre 4 et 14 atomes de carbone et entre 75 et 100 mol % d'au moins un diol aliphatique à chaîne ramifiée.

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