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:
Feb. 05, 1985
Filed:
Jun. 30, 1983
Applicant:
Inventor:
Aldo Trovati, Novara, IT;
Assignee:
RESEM, S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524591 ; 524839 ; 524840 ;
Abstract
A process for producing stable aqueous dispersions of polyurethanes, which comprises reacting a mixture of a diol containing an ionizable group and a polyol-polyester or polyol-polyether, with an aromatic, or cycloaliphatic or aliphatic isocyanate, to form a prepolymer having terminal isocyanic groups, then reacting this last with a hydroxy-alkyl-(meth)acrylate to obtain an oligourethane having unsaturated terminal groups, and finally dispersing said oligourethane in water and polymerizing it in the presence of radicalic catalysts.