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:
Jun. 19, 1984
Filed:
Dec. 21, 1981
Masayuki Funabashi, Iwaki, JP;
Yoshikazu Kokubu, Iwaki, JP;
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A shaped article of collagen having 5 to 20 .mu.m of thickness, the peak maximum temperature of endothermic denaturation thereof being in the range of 62.degree. to 71.degree. C., the wet tensile strength thereof being in the range of 3 to 6 kg/mm.sup.2 and the wet tear strength thereof being in the range of 25 to 150 g.multidot.cm/cm is prepared by a process comprising cross-linking a collagenous material so that the difference of the peak maximum temperatures of endothermic denaturation of the material between before and after the cross-linking falls in the range of 1.0.degree. to 10.degree. C. and the peak maximum temperature after the cross-linking falls in the range of 63.degree. to 74.degree. C., fibrating the cross-linked collagenous material to prepare an aqueous dispersion with the viscosity of 100 to 2000 cP and the spinnability of 30 to 80 mm at the concentration of 1% by weight of collagen fiber and subjecting the dispersion to electrodeposition.