Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1992-09-14
1993-07-13
Page, Thurman K.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
525415, C08J 300, C08K 515, C08L 6704
Patent
active
052274128
ABSTRACT:
Biodegradable and resorbable surgical materials of molded articles of poly(lactic acid) or copolymers of lactic acid and glycolic acid, characterized in that the articles are molecular-orientated, and having a bending strength of 1.6.times.10.sup.33 to 2.5.times.10.sup.3 kg/cm.sup.2, a bending modulus of 5.5.times.10.sup.2 to 24.0.times.10.sup.2 kg/cm.sup.2, a crystallinity, determined by density measurement, of 10 to 60%, and a viscosity average molecular weight measured after melt processing of not less than 200,000, and in that at least 80% of initial strength of the articles is maintained after dipping in a saline at 37.degree. C. for three months.
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Boutani Hidekazu
Hyon Suong-Hyu
Ikada Yoshito
Shikinami Yasuo
Tsuta Kaoru
Biomaterials Universe Inc.
Page Thurman K.
Rajguru U. K.
Takiron Co., Ltd.
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