Moisture-curable, hot-melt composition

Details Moisture-curable, hot-melt composition Moisture-curable, hot-melt composition

1996-11-08

1998-10-27

Short, Patricia A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525131, C08L 3306, C08L 7504

Patent

active

058279261

ABSTRACT:
There are provided moisture-curable hot-melt compositions comprising a polyurethane prepolymer and a crystalline polymer obtained from monomer(s) containing at least one crystalline ethylenically unsaturated monomer with no active hydrogen, which have low melt viscosities and high initial impact strength and final strength. The monomers may also contain amorphous ethylenically unsaturated monomers with no active hydrogen, in addition to the crystalline monomer. Typical crystalline monomers are (meth)acrylate esters of non-tertiary alcohols, the alkyl portions of which comprise 16 or more carbon atoms. Typical amorphous monomers are (meth)acrylate esters of non-tertiary alcohols, the alkyl portions of which comprise no more than 15 carbon atoms. Use of an alkyl acrylamide as one of the amorphous monomers is advantageous for improving the performance of the moisture-curable hot-melt adhesive.

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