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:
Jul. 25, 1989
Filed:
Sep. 11, 1987
Applicant:
Inventor:
Siegfried Hopperdietzel, Selb, DE;
Assignee:
Rehau AG & Co., Rehau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08K / ; C08K / ;
U.S. Cl.
CPC ...
523205 ; 428 356 ; 524 35 ; 524567 ;
Abstract
Use of cellulose fibers of natural origin as an admixture to polyvinyl chloride is disclosed. Structurally modifying a polyvinyl article by admixing cellulose fibers limits heat shrinkage thereof and results in improved surface characteristics and/or mechanical characteristics. A polyvinyl article is provided which is comprised of polyvinyl chloride and from 1 to 40 wt. %, preferably from 3 to 20 wt. %, cellulose fibers having a fiber thickness ranging from a finite thickness to about 40 .mu.m and a fiber length ranging from twice the fiber thickness to about 400 .mu.m, preferably from about 80 .mu.m to about 400 .mu.m.