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Title:
DEPOLYMERISATION OF POLYSACCHARIDES AND RELATED PRODUCTS
Document Type and Number:
WIPO Patent Application WO/2013/050300
Kind Code:
A3
Abstract:
Procedure for depolymerising polysaccharides using UV-vis light irradiation catalyzed by a radical photoinitiator. The polysaccharides obtained with the procedure of the invention have a average number molecular weight comprised between 5,000 and 500,000 and when dissolved in water give solutions with high concentrations and low viscosity.

Inventors:
MACCHI ROBERTO (IT)
CASIRAGHI ANGELO (IT)
NORCINI GABRIELE (IT)
TENCONI MAURO (IT)
FLORIDI GIOVANNI (IT)
LI BASSI GIUSEPPE (IT)
MENEGUZZO ENZO (IT)
Application Number:
EP2012/069163
Publication Date:
May 30, 2013
Filing Date:
September 28, 2012
Export Citation:
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Assignee:
LAMBERTI SPA (IT)
International Classes:
C08B11/12; C08B37/00; C08J3/28; C08J11/22; C08K5/00
Foreign References:
CN101544704A2009-09-30
Other References:
REDDY T T ET AL: "Free radical degradation of guar gum", POLYMER DEGRADATION AND STABILITY, BARKING, GB, vol. 86, no. 3, 1 December 2004 (2004-12-01), pages 455 - 459, XP004601112, ISSN: 0141-3910, DOI: 10.1016/J.POLYMDEGRADSTAB.2004.05.017
JUMEL K ET AL: "Effect of gamma irradiation on the macromolecular integrity of guar gum", CARBOHYDRATE RESEARCH, PERGAMON, GB, vol. 282, no. 2, 18 March 1996 (1996-03-18), pages 223 - 236, XP004018706, ISSN: 0008-6215, DOI: 10.1016/0008-6215(95)00385-1
BRADLEY T D ET AL: "Thermal degradation of guar gum", CARBOHYDRATE POLYMERS, APPLIED SCIENCE PUBLISHERS, LTD. BARKING, GB, vol. 10, no. 3, 1 January 1989 (1989-01-01), pages 205 - 214, XP024146868, ISSN: 0144-8617, [retrieved on 19890101], DOI: 10.1016/0144-8617(89)90012-X
NYOK-SAI HON: "Formation of Free radicals in Photoirradiated Cellulose. III. Effect of Photosensitizers", JOURNAL OF POLYMER SCIENCE, vol. 13, 1 January 1975 (1975-01-01), pages 1933 - 1941, XP002686312
Attorney, Agent or Firm:
GIARONI, Paola (n. 18, Albizzate, IT)
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