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:
Dec. 28, 1982
Filed:
Apr. 30, 1981
Patrice M Le Roy, Ballancourt, FR;
Jacky P Pattein, Etrechy, FR;
Societe Nationale des Poudres et Explosifs, Paris, FR;
Abstract
The invention relates to the field of crosslinkable thermoplastic polyurethane resins containing ethylenic side groups. This resin preferably results from the reaction of (a) an organic diisocyanate, (b) a saturated linear diol, (c) a diol having a molecular weight of less than 300, and (d) an unsaturated diol consisting of the acrylic or methacrylic acid ester of a trihydric alcohol, of the formula: ##STR1## in which R.sub.3 =Me or H and n is an integer between 1 and 4. 2,3-Dihydroxypropyl acrylate will preferably be used. The polyurethane resin according to the invention can be processed in accordance with the well-known traditional processes for thermoplastics, while at the same time being capable of undergoing crosslinking, by virtue of their unsaturated side groups, to form a three-dimensional lattice. Application to profiles and prepregs.