logo

For the Inventor, By the Inventor

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.:

US 4363895 B1

PDFFull Text
Date of Patent:
Dec. 14, 1982

Filed:

Mar. 16, 1981

Solutions, which can be shaped, from mixtures of cellulose and

Applicant:
Inventors:

Pierre Chion, Bron, FR;

Jacques Menault, Charbonnieres-les-Bains, FR;

Henry Rodier, Sainte-Foy-les-Lyon, FR;

Assignee:

Rhone-Poulenc-Textile, Paris, FR;

Attorney:

Murray and Whisenhunt

Primary Examiner:

John Kight, III

Assistant Examiner:

Nathan M Nutter

Int. Cl.
CPC ...
C08L / ; C08G / ; C08L / ; D01F / ;
U.S. Cl.
CPC ...
525 5421 ; 52623821 ; 1061 / ; 106165 ; 106187 ; 106203 ; 264184 ; 264186 ; 264194 ; 428361 ; 428375 ; 536 57 ; 536 84 ;
Abstract

The present invention relates to new polymer solutions which make it possible to produce shaped articles, such as yarns and fibres, films, sheets and the like. These solutions consist of cellulose having a degree of polymerisation of at least 200, polyamide-imide, dimethyl sulphoxide and formaldehyde, with a weight ratio cellulose/polyamide-imide of 0.05 to 1, preferably 0.1 to 1, a ratio formaldehyde/cellulose of 0.2 to 2 and a total concentration of 6 to 25%, preferably 15 to 20%. These solutions are particularly suitable for the production of filaments which consist of fibrils substantially orientated along the axis of the fibre and closely intersecting, the cellulose macromolecules being partially involved in a crystal lattice characteristic of cellulose II. The filaments possess valuable properties for use in textiles.

Find Patent Forward Citations

Chion, Pierre. (1982). Solutions, which can be shaped, from mixtures of cellulose and (U.S. Patent No. 4363895). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4363895

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…