Sprayable thermoplastic compositions
AssigneeMinnesota Mining and Manufacturing Company
InventorsGaddam N. Babu, Dennis D. Hansen
Life of this patent
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Abstract
Sprayable hot-melt adhesive compositions are disclosed comprising (A) styrenic block copolymer, (B) tackifying resin, and (C) ethylene copolymer. Methods of preparing and using said compositions are also disclosed.
Claims19
A sprayable hot-melt adhesive composition comprising (A) styrenic block copolymer whose interpolymerized units comprise from 12 to 45 weight percent of units derived from styrenic monomers;
- (B) tackifying resin;
- and (C) ethylene copolymer having a melt index sufficiently high to impart good sprayability and desirably long open time to said composition.
An article comprising a first and second substrate, wherein said substrates are bonded together with a sprayable hot-melt adhesive composition comprising a styrenic block copolymer whose interpolymerized units comprise from 12 to 45 weight percent of units derived from styrenic monomers, a tackifying resin, and an ethylene copolymer having a melt index sufficiently high to impart good sprayability and desirably long open times to said composition.
A method for preparing an article comprising the steps of
- (A) preparing a sprayable hot-melt adhesive composition comprising a styrenic block copolymer whose interpolymerized units comprise from 12 to 45 weight percent of units derived from styrenic monomers, a tackifying resin, and an ethylene copolymer having a melt index sufficiently high to impart good sprayability and desirably long open times to said composition,
- (B) spraying said adhesive composition onto a first substrate to form an adhesive layer, and
- (C) applying a second substrate to said adhesive layer such that a bond is formed between said first and second layers.
Dependencies are inferred from the claim text.