Method of modifying polyacrylates for obtaining high...

C - Chemistry – Metallurgy – 08 – F

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C08F 8/00 (2006.01) C08F 20/04 (2006.01) C08J 3/03 (2006.01)

Patent

CA 2556046

The present invention relates to the field of acrylic polymers and in particular to their modification with the purpose of the formation of compounds of still higher molecular masses. Plastic materials of the type of acrylic universal polymer (PAU), e.g. sold under the tradename "POLYGOR", can be used as starting material. The acrylic starting material is then modified by appropriate modifier compounds. In this way modified polymers can have molecular weights in the range between 2x 105 and 15x107 a.u. and are water- soluble. This allows to use them as flocculation, coagulation, ion-exchange means and as additives to surface active agents for raising their washing and foaming capabilities.

La présente invention concerne le domaine des polymères acryliques et en particulier des modifications qui peuvent leur être apportées dans le but de former des composés de masse moléculaire encore plus élevée. Des matières plastiques du type polymère universel acrylique (PAU), commercialisé par exemple sous la marque "POLYGOR", peuvent être utilisées comme matériau de départ. Ce matériau de départ acrylique est ensuite modifié par des groupes modificateurs appropriés. On obtient ainsi des polymères modifiés dont les poids moléculaires se situent entre 2x 10?5¿ et 15x10?7¿ (a.u.) et qui sont hydrosolubles. Ces polymères peuvent être utilisés comme moyens de floculation, de coagulation, d'échange ionique et comme additifs pour agents actifs de surface dans le but d'en augmenter la capacité de lavage et le pouvoir moussant.

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