Hydrophilic polyester compounds

US4708985A · kind A · utility

Assignee

• Akzona Incorporated · US

Inventors

• Michael Diamantoglou · Zell am Harmersbach, DE
• Helmut Magerlein · Obernburg, DE
• Walter Brodowski · Amorbach, DE
• Wolfgang Grimm · Bremen, DE
• Gerhard Meyer · Erlangen, DE

Key dates

• Filing date: Mar 22, 1982
• Grant date: Nov 24, 1987
• Expiry date: Mar 22, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L67/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a hydrophilic moulding compound of homopolyester and/or copolyester which contains 1 to 20 percent by weight of an alkaline and/or alkaline-earth salt of salt-forming polymer and/or copolymers from ethylenic unsaturated monomers as finely dispersed filling material, having in particualr a maximum particle size of 1 um, the salt-forming polymers being composed in particular of the following single monomers or mixtures thereof: vinyl-sulfonic acid, acrylamidoalkylene-sulfonic acid, sulfonated styrene, acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, vinyl-phosphonic acid, monoalkyl ester of maleic acid, monoalkyl ester of fumaric acid. The invention also relates to a process according to which the salts are preferably added to the polycondensation mixture of the polyester starting materials before and/or during poly-condensation as a suspension in polyhydric alcohol. The moulding compound is preferably used for making filament yarns, or staple fibers.