Back to results
US 5,475,038 AGranted
U.V. curable laminating adhesive composition
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorMartin M. Skoultchi
Life of this patent
Estimating the term…
Abstract
A print laminating adhesive composition comprising a selected acrylate terminated photopolymerizable oligomer of the formula: ##STR1## where A is the residue of a diisocyanate selected from the group consisting of diphenylmethane 4,4.sup.1 diisocyanate and 4,4.sup.1 dicyclohexylmethane diisocyanate; X is the residue of polypropylene glycol having a molecular weight of from about 150 to 4000; R is alkyl or hydroxyalkyl of 2 to 10 carbons; R.sup.1 is alkylene of 2 to 3 carbons; and R.sup.2 is hydrogen or methyl.
Claims16
A laminating adhesive composition comprising:
- A) an oligomer of the formula:
- ##STR5## where A is the residue of a diisocyanate selected from the group consisting of diphenylmethane 4,4.sup.1 diisocyanate and 4,4.sup.1 dicyclohexylmethane diisocyanate;
- X is the residue of polypropylene glycol having a molecular weight of from about 150 to 4000;
- R is alkyl or hydroxyalkyl of 2 to 10 carbons;
- R.sup.1 is alkylene of 2 to 3 carbons;
- and R.sup.2 is hydrogen or methyl;
- B) an acrylic monomer mixture comprising one or more monomers selected from the group consisting of:
- i) an alkyl, cycloalkyl, bicycloalkyl, heterocyclic or alkylene substituted heterocyclic acrylate or methacrylate having 4 to 12 carbon atoms in the alkyl or heterocyclic groups and wherein the hetero atom is oxygen;
- ii) an alkoxylated phenol ether acrylate or methacrylate wherein the alkoxy group is ethoxy or propoxy;
- and
- iii) acrylic or methacrylic acid;
- and
- C) a UV photoinitiator.
10 more elements
Dependencies are inferred from the claim text.