The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 1997
Filed:
Oct. 30, 1995
Naoki Ichikawa, Nagoya, JP;
Mitsubishi Chemical MKV Company, Tokyo, JP;
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.