Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1982-03-22
1987-11-24
Short, Patricia A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525173, 525174, 525175, 525176, C08L 6702
Patent
active
047089857
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.
REFERENCES:
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patent: 3702350 (1972-11-01), Kimura
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patent: 4322335 (1982-03-01), Nield
patent: 4336685 (1982-06-01), Eisenstein
patent: 4366273 (1982-12-01), Aharoni
patent: 4412040 (1983-10-01), Albee
Brodowski Walter
Diamantoglou Michael
Grimm Wolfgang
Magerlein Helmut
Meyer Gerhard
Akzona Incorporated
Boone Jeffrey S.
Short Patricia A.
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