Polysiloxane and urethane modified water-reducible alkyd resins

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 63/48 (2006.01) C08G 63/695 (2006.01) C09D 167/08 (2006.01) C09D 175/06 (2006.01)

Patent

CA 2689564

Urethane and siloxane modified water-reducible alkyd resins ABCDE, comprising moieties derived from polyhydric alcohols A, modified fatty acids B made by grafting olefinically unsaturated carboxylic acids B2 onto fatty acids B1, ungrafted fatty acids C, silanol or alkoxysilyl functional siloxane oligomers or polymers D, and polyfunctional isocyanates E, a process for their production, and a method of use thereof in coating binders.

La présente invention concerne des résines alkydes ABCDE réductibles dans l'eau, modifiées par l'uréthane et le siloxane, qui comprennent des fractions dérivées de polyols A, d'acides gras modifiés B produits par le greffage d'acides carboxyliques non saturés par l'oléfine B2 sur des acides gras B1, des acides gras non greffés C, des oligomères ou des polymères de siloxane à fonctionnalité alcoxysilyle D et des isocyanates polyfonctionnels E. Cette invention porte également sur un procédé de production de ces résines alkydes et sur une méthode d'utilisation de ces dernières dans des liants de recouvrement.

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