Solutions, which can be shaped, from mixtures of cellulose and polyamide-imide, and shaped articles obtained

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4363895
SERIAL NO

06244135

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

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.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
RHONE-POULENC-TEXTILEPARIS

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chion, Pierre Bron, FR 9 113
Menault, Jacques Charbonnieres-les-Bains, FR 10 93
Rodier, Henry Sainte-Foy-les-Lyon, FR 4 38

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation