Vinyl chloride copolymers and method of producing the same

Details Vinyl chloride copolymers and method of producing the same Vinyl chloride copolymers and method of producing the same

C - Chemistry, Metallurgy

08

F

C08F 216/12 (2006.01) B32B 17/10 (2006.01) C08F 214/06 (2006.01)

Patent

CA 2194281

A process for polymerizing vinyl chloride alone or a mixture of vinyl chloride and other vinyl monomer(s) with hydroxy containing monomer(s), and the copolymer obtained thereby. The hydroxy containing monomer(s) is obtained by the partial allylation of dihydroxy or polyhydroxy alcohols. The copolymers are prepared by suspension polymerization. The presence of the hydroxyl groups significantly modifies the characteristics of the polymers. Plasticizer-take- up is increased and dry-time is reduced significantly. Furthermore, the hydroxyl groups become the sites for postpolymerization reactions due to their polarity and reactivity.

Procédé de polymérisation du chlorure de vinyle seul ou d'un mélange de chlorure de vinyle et d'un autre (d'autres) monomère(s) de vinyle avec un (des) monomère(s) contenant hydroxy, et copolymère ainsi produit. On obtient le ou les monomère(s) contenant hydroxy par allylation partielle d'alcools dihydroxy ou polyhydroxy. On prépare les copolymères par polymérisation en suspension. La présence de groupes hydroxyles modifie de façon importante les caractéristiques des polymères. L'absorption du plastifiant est augmentée et le temps de séchage est notablement réduit. En outre, les groupes hydroxyles deviennent des sites de réactions de postpolymérisation par suite de leur polarité et de leur réactivité.

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