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:
Jul. 19, 2016
Filed:
Mar. 28, 2013
Toray Industries, Inc., Tokyo, JP;
Toray Industries, Inc., , JP;
Abstract
A biodegradable material is a chemically cross-linked product between a multivalent compound A having 3 or more functional groups X such as hydroxyl group; and a multivalent compound B having 3 or more functional groups Y such as carboxyl group wherein chemical cross-linkage(s) is/are formed by condensation reaction of the functional group(s) X and the functional group(s) Y; wherein (y+z)/(x+z) is 1.2 to 4.0 when MA>MB, and (x+z)/(y+z) is 1.2 to 4.0 when MA<MB; wherein x represents the number of the functional group(s) X not condensed with the functional group(s) Y; y represents the number of the functional group(s) Y not condensed with the functional group(s) X; z represents the number of the cross-linkage(s); MA represents weight average molecular weight of the multivalent compound A; and MB represents weight average molecular weight of the multivalent compound B.