Composite structures
AssigneeChemplex Company
InventorsAshok M. Adur, Seymour Schmukler, John Maconis, Jr., Mitsuzo Shida
Life of this patent
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Abstract
Composite structures incorporating resin blends that are strong adhesives to various substrates and especially to polar substrates. The blends comprise (a) a graft copolymer of a polyethylene backbone grafted with at least one grafting monomer comprising one or more polymerizable ethylenically unsaturated carboxylic acids or acid derivatives such as acid anhydrides, acid esters, salts, amides, imides and the like, (b) a LDPE, a linear low density polyethylene, or an ethylene-unsaturated ester copolymer, and (c) a poly (.alpha.-olefin).
Claims59
A composite structure comprising:
- (a) a substrate, and adhered thereto
- (b) an adhesive blend consisting essentially of:
- (1) about 0.1 to less than about 40 parts by weight in said blend of a graft copolymer of about 70-99.95 wt.% of a polyethylene backbone grafted with about 30-0.05 wt.% of at least one grafting monomer comprising at least one polymerizable ethylenically unsaturated carboxylic acid or carboxylic acid derivative for a total of 100%, and
- (2) about 0.1-99 parts by weight in said blend of LDPE, or ethylene-unsaturated ester copolymers, or LLDPE or mixtures thereof, and
- (3) about 0.1-60 parts by weight in said blend of a blending component comprising a homopolymer or copolymer, or mixtures thereof, containing greater than about 50 wt.% of an .alpha.-olefin of 4-15 carbon atoms, for a total of components (1), (2) and (3) of 100 parts by weight.
A composite structure comprising:
- (a) two or more substrates with adjacent pairs adhered together by
- (b) an intervening layer of an adhesive blend consisting essentially of
- (1) about 0.1 or less than about 40 parts by weight in said blend of a graft copolymer of about 70-99.95 wt.% of a polyethylene backbone grafted with about 30-0.05 wt.% of at least one grafting monomer comprising at least one polymerizable ethylenically unsaturated carboxylic acid or carboxylic acid derivative for a total of 100%, and
- (2) about 0.1-99 parts by weight in said blend of LDPE, or an ethylene-unsaturated ester copolymer, or LLDPE or mixtures thereof, and
- (3) about 0.1-60 parts by weight in said blend of a blending component comprising a homopolymer or copolymer, or mixtures thereof, containing greater than about 50 wt.% of an .alpha.-olefin of 4-15 carbon atoms, for a total of components (1), (2) and (3) of 100 parts by weight.
Dependencies are inferred from the claim text.