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:
Jan. 16, 1979
Filed:
May. 03, 1976
Michel De Poortere, Brussels, BE;
Marc Colpaert, Ghent, BE;
Paul Dufour, Ruisbroek, BE;
August Vrancken, Dworp, BE;
UCB, Societe Anonyme, , BE;
Abstract
Halogenated photopolymerizable adhesive, which comprises: (a) 20 to 70% by weight of at least one halogenated polymer, which: (1) has a chain interrupted by at least one oxygen or nitrogen atom, (2) contains from 4 to 70% by weight of halogen atoms attached to carbon atoms having the electronic configuration sp.sup.2, (called 'active halogen atoms'), (3) has an average molecular weight between 700 and 10,000 and (4) has a glass transition temperature (Tg) between -80.degree. C and 20.degree. C; (b) 5 to 30% by weight of at least one organic monomer compound containing at least two acrylic and/or methacrylic acid radicals and containing from 0 to 65% by weight of active halogen atoms; (c) 20 to 70% by weight of at least one organic monomer compound containing an acrylic or methacrylic acid radical and containing from 0 to about 65% by weight of active halogen atoms; (d) about 1 to about 25% by weight of a photo-initiator system comprising: (1) 0.5 to 100% by weight of at least one aromatic ketone, (2) 0 to 99.5% by weight of at least one tertiary amine, at least one carbon atom of which, in the alpha position with regard to the nitrogen atom, carries at least one hydrogen atom, (3) 0 to 90% by weight of an aromatic or nonaromatic alpha-dione, the sum of (1) + (2) + (3) representing 100% by weight of the photo-initiator system, the total content of active halogen atoms amonting to 3 to 50% by weight of the total halogenated photopolymerizable adhesive and lamination or contact adhesives based on said halogenated photopolymerizable adhesive.