Process for the production of filler-containing acrylic and moda

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion

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264101, 264206, 264211, 2642108, 2642106, 26421112, 10628714, 10628716, 528 10, 528 25, 528 28, D01F 618

Patent

active

047479876

ABSTRACT:
Silica-containing acrylic and modacrylic fibres are obtained without spinning defects in that an aqueous silica sol is reacted with a silane and with a polar organic solvent, the sequence in which the two agents are added being optional, the water is distilled off in a vacuum at a temperature of at most 60.degree. C., the thread-forming polymer is then added in a quantity which is sufficient to form a spinnable solution and the solution is spun.

REFERENCES:
patent: 2879546 (1959-03-01), Hemphill
patent: 2888419 (1959-05-01), Safford
patent: 3632715 (1972-01-01), Gowdy et al.
patent: 4136132 (1979-01-01), Poole
patent: 4273691 (1981-06-01), MacLaury et al.

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