Primer composition and bonding of organic polymeric substrates
Assignee3M Innovative Properties Company
InventorJames D. Groves
Life of this patent
Estimating the term…
Abstract
The present invention provides a primer composition comprising an aliphatic isocyanate-containing compound, a nonhalogenated hydrocarbon polymer containing organic functional groups, a halogenated hydrocarbon polymer optionally containing organic functional groups, and an organic solvent.
Claims28
A primer composition comprising an aliphatic isocyanate-containing compound, a nonhalogenated hydrocarbon polymer containing organic functional groups, a halogenated hydrocarbon polymer containing organic functional groups, and an organic solvent;
- wherein the halogenated hydrocarbon polymer containing organic functional groups is selected from the group consisting of a chlorosulfonated polyethylene, a chlorosulfonated polypropylene, a chlorinated polypropylene modified with maleic anhydride, a chlorinated polyethylene modified with maleic anhydride, and blends or reaction products thereof.
The primer composition comprising a solution of:
- (a) an aliphatic isocyanate-containing compound selected from the group consisting of 1,6-hexamethylene diisocyanate, methylene bis(4-cyclohexyl isocyanate), trimethyl hexamethylene diisocyanate, isophorone diisocyanate, .gamma.-isocyanatopropyl trimethoxysilane, and oligomers and combinations thereof;
- (b) a nonhalogenated hydrocarbon polymer containing organic functional groups, wherein the functional groups are selected from the group consisting of carboxylic acid anhydride groups, hydroxyl groups, epoxide groups, carboxylic acid ester groups, carboxylic acid amide groups, carboxylic acid groups, and combinations thereof;
- (c) a halogenated hydrocarbon polymer containing organic functional groups, wherein the polymer is selected from the group consisting of a chlorosulfonated polyethylene, a chlorosulfonated polypropylene, a chlorinated polypropylene modified with maleic anhydride, a chlorinated polyethylene modified with maleic anhydride, and blends or reaction products thereof;
- and
- (d) an organic solvent.
A primer composition preparable by combining components comprising an aliphatic isocyanate-containing compound, a nonhalogenated hydrocarbon polymer containing organic functional groups, a halogenated hydrocarbon polymer containing organic functional groups, and an organic solvent, wherein the halogenated hydrocarbon polymer containing organic functional groups is selected from the group consisting of a chlorosulfonated polyethylene, a chlorosulfonated polypropylene, a chlorinated polypropylene modified with maleic anhydride, a chlorinated polyethylene modified with maleic anhydride, and blends or reaction products thereof.
A primer composition comprising an incipient aliphatic isocyanate-containing compound, an incipient nonhalogenated hydrocarbon polymer containing organic functional groups, an incipient halogenated hydrocarbon polymer containing organic functional groups, and an organic solvent;
- wherein the halogenated hydrocarbon polymer containing organic functional groups is selected from the group consisting of a chlorosulfonated polyethylene, a chlorosulfonated polypropylene, a chlorinated polypropylene modified with maleic anhydride, a chlorinated polyethylene modified with maleic anhydride, and blends or reaction products thereof.
A primer composition comprising an aliphatic isocyanate-containing compound, about 0.25% to about 10% by weight of a nonhalogenated hydrocarbon polymer containing organic functional groups, about 0.5% to about 10% by weight of a halogenated hydrocarbon polymer containing organic functional groups, and an organic solvent;
- wherein the nonhalogenated hydrocarbon polymer containing organic functional groups is selected from the group consisting of a styrene-ethylene/butylene-styrene triblock copolymer modified with maleic anhydride, an ethylene-propylene copolymer modified with maleic anhydride, a propylene polymer modified with maleic anhydride, an ethylene/butylene copolymer containing hydroxyl endgroups, an ethylene vinyl acetate copolymer, an ethylene vinyl acetate copolymer modified with maleic anhydride, and blends or the reaction products of two or more of these polymers.
Dependencies are inferred from the claim text.