Aqueous dispersion, process for producing the same, and use

Details Aqueous dispersion, process for producing the same, and use Aqueous dispersion, process for producing the same, and use

C - Chemistry, Metallurgy

08

L

C08L 23/28 (2006.01) C08J 3/03 (2006.01) C08L 33/02 (2006.01) C08L 35/00 (2006.01) C09D 123/28 (2006.01) C09J 123/28 (2006.01)

Patent

CA 2478301

The purpose of the invention is to provide a novel aqueous dispersion that allows high solidification and that has good adherence and gasohol resistance to polyolefin substrates even on low-temperature baking. An aqueous dispersion characterized by dispersedly containing carboxyl group-containing chlorinated propylenic random copolymer with chlorine content of 5 to 40% by weight, grafting level of a, .beta.-unsaturated carboxylic acid or its anhydride of 0.1 to 20% by weight and weight average molecular weight of 10,000 to 300,000, and stabilizer, a method for the production and the uses thereof.

L'invention concerne une nouvelle dispersion aqueuse pouvant être formulée de manière à présenter une teneur élevée en solide et présentant une adhésion satisfaisante à des substrats en polyoléfine ainsi qu'une résistance satisfaisante à l'alco-essence, même par cuisson à basse température. La dispersion aqueuse est caractérisée en ce qu'y est dispersé un stabilisateur et un copolymère aléatoire de propylène carboxylé chloré lequel a une teneur en chlore de 5 à 40 % en poids, et dans lequel la quantité d'un acide ou anhydride carboxylique alpha , beta -insaturé qui lui est greffé représente 0,1 à 20 % en poids et la masse moléculaire moyenne au poids est comprise entre 10000 et 300000.

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