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:
Dec. 20, 1977
Filed:
Aug. 14, 1975
Applicant:
Inventors:
Johann Hupfl, Seewalchen, OE;
Manfred Czermak, Timelkam, OE;
Helmut Teichmann, Vocklabruck, OE;
Josef Paul, Vocklabruck, OE;
Assignees:
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Chemiefaser Lenzing Aktiengesellschaft, Lenzing, OE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
8116 / ; 106 / ; 260 13 ; 260 / ; 260 / ; 264194 ; 264198 ; 423302 ;
Abstract
Manufacture of flame-retardant regenerated cellulose fibres by adding one or more flame-retardant phosphorus comounds to viscose, extruding the viscose-containing mixture thus obtained into a spinning bath, stretching and after treating the resulting filaments or staple fibres. The flame-retardant fibres are made by using as the flame-retardant agent a combination of compounds of the general formula: