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:
May. 08, 2018
Filed:
Feb. 03, 2016
S.p.c.m. SA, Andrezieux-Boutheon, FR;
Frederic Blondel, Lezigneux, FR;
Lionel Champagnon, Magneux Haute Rive, FR;
S.P.C.M. SA, Andrezieux Boutheon, FR;
Abstract
The present invention relates to a polymer prepared by polymerization of an aqueous solution of one or more monomers in water-in-oil inverse emulsion, in which one or more of the monomers used comprise(s) at least one acid function, the molar percentage of monomers bearing at least one weak acid function relative to all the monomers used being at least 30%. The polymerization is carried out with a concentration of all the monomers in aqueous solution which falls within the range of from 1.3 mmol to 3.6 mmol per gram of aqueous solution and during the polymerization, at most 20% of the acid functions present on the monomers which have at least one acid function are in neutralized form.