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:
Aug. 06, 2013
Filed:
Apr. 17, 2007
Eva Baldaro, Milan, IT;
Raffaella Pelizzari, Magenta, IT;
Mauro Tenconi, Gazzada, IT;
Giuseppe LI Bassi, Gavirate, IT;
Eva Baldaro, Milan, IT;
Raffaella Pelizzari, Magenta, IT;
Mauro Tenconi, Gazzada, IT;
Giuseppe Li Bassi, Gavirate, IT;
Lamberti SPA, Albizzate, IT;
Abstract
Procedure for the preparation of cationic guar having DS comprised between 0.01 and 3, free from boron and suitable for the use in the cosmetic field and in household cleaning products, comprising the following steps: a) 100 parts by weight of guar flour are reacted with 3-chloro-2-hydroxypropyl trimethylammonium chloride and sodium hydroxide in from 5 to 500 parts by weight of a water and alcohol mixture containing from 20 to 50% by weight of water; b) the amount of water and alcohol is regulated in order to obtain a dispersion containing from 65 to 95% by weight of a of water and alcohol mixture containing from 30 to 50% by weight of water and the dispersion is maintained under stirring at temperature comprised between 15 and 40° C. for at least 10 minutes; c) the mixture is filtered under vacuum and dried to obtain the purified cationic guar.