Alkali metal salts of cross-linked polymeric microgels as...

Details Alkali metal salts of cross-linked polymeric microgels as... Alkali metal salts of cross-linked polymeric microgels as...

C - Chemistry, Metallurgy

08

L

400/4512

C08L 67/02 (2006.01)

Patent

CA 1218180

ABSTRACT OF THE DISCLOSURE Disclosed are nucleating agents for polyethylene terephthalate molding compositions comprised of alkali metal salts of carboxylic acid-containing polymeric microgel particles which are prepared by polymerizing in aqueous emulsion a monomer mixture containing about 5 to 50 percent by weight of polymeriz- able carboxylic acid monomers, up to 10 percent of a multifunctional crosslinking monomer and one or more carboxyl- free relatively water insoluble polymerizable vinyl monomers. -1-

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