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:
May. 07, 2002
Filed:
Jun. 28, 2000
Applicant:
Inventor:
Seiko Nakano, Tsu, JP;
Assignee:
M & S Research and Development Co., Ltd., Tsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 6/926 ; C08G 6/900 ; C08G 6/344 ; C08G 7/310 ;
U.S. Cl.
CPC ...
C08G 6/926 ; C08G 6/900 ; C08G 6/344 ; C08G 7/310 ;
Abstract
A method of producing a polyamide resin by reacting with at least one diamine compounds at least one linear polyester resin consisting of at least one dicarboxylic acid component and at least one diol component and having an intrinsic viscosity of not less than 0.2 dl/g, so that the at least one diol component of the linear polyester resin is substituted by the diamine compound, resulting in the polyamide resin as a reaction product, wherein the improvement comprises: at least one of a carboxylic acid-activator and an inorganic salt being present in a reaction system of the linear polyester resin and the diamine compound.