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Title:
MOLECULAR WEIGHT REDUCTION OF POLYMER USING IRRADIATION TREATMENT
Document Type and Number:
WIPO Patent Application WO2002006348
Kind Code:
A3
Abstract:
A method for reducing the molecular weight of polymer comprises subjecting a solid phase polymer to a dose of gamma irradiation sufficient to permit the desired molecular weight reduction to occur.

Inventors:
MILLER ROBERT J
SHIEDLIN AVIVA
Application Number:
PCT/US2001/022501
Publication Date:
May 16, 2002
Filing Date:
July 18, 2001
Export Citation:
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Assignee:
GENZYME CORP (US)
International Classes:
C08B11/20; C08B37/08; (IPC1-7): C08J3/28; C08B11/12; C08B11/20; C08B37/00; C08B37/08
Domestic Patent References:
WO1993020952A11993-10-28
Foreign References:
GB1249814A1971-10-13
US4420611A1983-12-13
EP0708113A11996-04-24
EP0269937A21988-06-08
EP1050544A12000-11-08
DE19821598A11999-11-18
Other References:
DATABASE WPI Week 199514, Derwent World Patents Index; AN 1995-101801, XP002191936, "Antibacterial substance having high antibacterial activity - obtd. by irradiating polysaccharide with ionising radiation"
DATABASE CHEMABS [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS; OHIO; US; KUME TAMIKAZU ET AL.: "Preparation of phytoalexin-inducing oligosaccharides by radiochemical degradation of polysaccharides.", XP002191934, Database accession no. 128:295001
DATABASE CHEMABS [online] CHEMICAL ABSTRACTS SERVICE; COLUMBUS; OHIO; US; FUJITA MITSUNARI ET AL.: "Medical goods containing dissolution-controlled irradiated hyaluronic acid gel.", XP002191935, Database accession no. 133:213221
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