Vinyl chloride resin composition

Details Vinyl chloride resin composition Vinyl chloride resin composition

1995-10-30

1997-08-19

Mulcahy, Peter D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524569, C08J 300

Patent

active

056589808

ABSTRACT:
A vinyl chloride resin composition to be used for extrusion molding whereby the cross-sectional shape of a molded product is continuously changed, said composition comprising 100 parts by weight of a vinyl chloride homopolymer, from 20 to 200 parts by weight of a plasticizer, and from 5 to 30 parts by weight of an acrylic resin having a weight average molecular weight of at least 1,500,000 and having a maximum draft ratio (i.e. when the vinyl chloride resin composition is extruded from an orifice having a diameter of 1 mm and a length of 20 mm at a cylinder temperature of 170.degree. C. at a shear rate of 1.2.times.10.sup.2 s.sup.-1, and the extruded filamentous composition is taken off at an increasing speed, a ratio of the take-off speed to the extrusion speed immediately before breakage of the filamentous composition) of at least 7.

REFERENCES:
patent: 3954928 (1976-05-01), Omori et al.
patent: 4894281 (1990-01-01), Yagi et al.
patent: 5298334 (1994-03-01), Moriyama et al.

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