Packaging adhesive having low oxygen barrier properties

Details Packaging adhesive having low oxygen barrier properties Packaging adhesive having low oxygen barrier properties

1996-12-18

1998-06-09

Niland, Patrick D.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525123, 525455, 528 85, 4284231, C08J 300, C08K 320, C08L 7500

Patent

active

057635277

ABSTRACT:
A two-part laminating adhesive is provided which joins two sheets of polymeric material, which adhesive, in cured form, provides substantially no contribution to the oxygen barrier properties of the laminate. The first part is a mixture of a polyol A), preferably a polyether, and a polymer B) formed from polymerization of .alpha.,.beta.-ethylenically unsaturated monomers, polymer B) preferably being formed in situ from monomers dissolved in polyol A). The second part is a multi-functional isocyanate, preferably an isocyanate-terminated urethane formed by reacting a poly-isocyanate monomer with a polyol.

REFERENCES:
patent: 5331039 (1994-07-01), Blum et al.

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