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:
Apr. 14, 2015
Filed:
Jun. 23, 2011
Tokizane Imanishi, Hyogo, JP;
Hirofumi Nishida, Hyogo, JP;
Tokizane Imanishi, Hyogo, JP;
Hirofumi Nishida, Hyogo, JP;
Nagase Chemtex Corporation, Osaka, JP;
Abstract
Provided are: an impact-resistant polyamide composition which exhibits improved toughness and improved impact strength and which can be easily polymerized in-situ in a molding stage; and a novel process for the production of the same. The novel process comprises initiating the anionic polymerization of ε-caprolactam in the presence of (A) an anionic polymerization catalyst, (B) an anionic polymerization activator, (C) 2.0 to 30% by weight (relative to the ε-caprolactam) of an N,N-disubstituted vinylbenzylamine, and (D) a radical polymerization initiator, and subjecting the resulting system to reaction under conditions comprising a reaction temperature of the reaction system of 120 to 180° C. and a reaction time of 10 seconds to 120 minutes. Since radical polymerization in the process is conducted without hindering the anionic polymerization, an alloyed polyamide composed of both polycaprolactam and poly (N,N-disubstituted vinylbenzylamine) can be obtained.