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:
Aug. 23, 1977
Filed:
Nov. 08, 1976
Applicant:
Inventor:
Stephen L Nickol, Wilmington, DE (US);
Assignee:
Suntech, Inc., Wayne, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
2608 / ; 260 / ; 260 / ;
Abstract
Process for forming block copolymer involves mixing dry salt of a prepolyamide and a molten melt-spinnable polyamide. Mixture is heated to a temperature in the range of between from the melting point of higher melting component of the mixture to below amide-interchange temperature of a blend of the melt-spinnable polyamide and the homopolymer which would result from the polymerization of the salt. Mixing and heating is continued until substantially all of the salt and the polyamide are converted into a block copolymer. The latter can be used to make fibers. One example of a suitable salt is a 30203-6 salt.