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. 21, 1976
Filed:
Jun. 28, 1974
Gunther Vock, Strassberg, D;
Hoechst Aktiengesellschaft, Frankfurt am Main, D;
Abstract
Polyester monofilaments having very high strength and low elongation also at elevated temperature and being resistant against tire rubber are obtained from polyesters having an intrinsic viscosity of more than 0.67 and terminal carboxy groups of less than 25 milliequivalents/kg by spinning into a water bath, a first drawing in a water bath having a temperature of from 70.degree. to 100.degree. C in a ratio of from 1 : 4.0 to 1 : 6.0, a second drawing at a temperature being a maximum 15.degree. C below the melting point to attain a total drawing ratio of from 1 : 6.0 to 1 : 7.5, and subsequent setting at a temperature being a maximum 15.degree. C below the melting point without allowing a shrinkage.