Compositions for providing abherent coatings
AssigneeMinnesota Mining and Manufacturing Company
InventorsBrian H. Williams, Chung-I Young
Life of this patent
Estimating the term…
Abstract
Radiation curable coating compositions for providing solvent-resistant abhesive coatings comprise polyfluorinated acrylates and methacrylates, polyethylenically unsaturated crosslinking agents and a film-forming organic polymer. The compositions can be used after radiation curing to render substrates oil, soil, and water repellent. The cured compositions have particular use as release coatings in image transfer systems wherein a fused xerographic image is transferred from the release coated surface, to another surface due to the particular characteristics of the coatings. Novel poly(fluorooxyalkylene)urethane acrylate compounds are also disclosed.
Claims3
A novel poly(fluorooxyalkylene)urethane acrylate or methacrylate having the general formula:
- Z-R.sub.f.sup.2 -Y-A'
- wherein:
- R.sub.f.sup.2 is a divalent poly(fluorooxyalkylene) group having a number average molecular weight of from about 500 to 20,000;
- A' is selected from the group consisting of ##STR31## wherein:
- R is selected from the group consisting of hydrogen and methyl, a is an integer having a value of 2 to 6, and R' is selected from the group consisting of a divalent aliphatic or cycloaliphatic group having 2 to 14 carbon atoms and an aryl group having 6 to 14 carbon atoms;
- Y is selected from the group consisting of ##STR32## wherein:
- b is 2 to 12, R.sup.2 is selected from the group consisting of hydrogen, a lower alkyl of about 1 to 4 carbon atoms, and --CH.sub.2 --.sub.c A', wherein c is 2 to 3, and wherein when R.sup.2 is --CH.sub.2 --.sub.c A, b is 2 or 3;
- and
- Z is selected from the group consisting of CF.sub.3 O--, CF.sub.3 OCF(CF.sub.3)O--, --Y--A', and wherein Y and A' are defined as said Y and said A' hereinabove.
Dependencies are inferred from the claim text.