Adhesive composition

Details Adhesive composition Adhesive composition

1979-02-12

1980-06-03

Phynes, Lucille M.

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

Synthetic resins

From carboxylic acid or derivative thereof

525437, 525438, 525440, 525446, 528 26, 528 28, 528 32, 528 38, 528297, C08G 6368

Patent

active

042062993

ABSTRACT:
An adhesive composition for plastic-metal foil composite packaging materials which comprises (A) a polyester glycol having a molecular weight of 3,000 to 100,000, a polyester-polyurethane polyol having a molecular weight of 3,000 to 100,000 or a mixture thereof, (B) a silane coupling agent and (C) an organic polyisocyanate, the molar equivalent ratio (NCO/H) of isocyanate group (NCO) to active hydrogen (H) thereof being within the range of 1 to 10.
The adhesive composition provides a satisfactory packaging material which does not have the problem of delamination between the metal foil and plastic film even on hot-water sterilization as it contains foods in sealed relation and which ensures long shelf lives and an improved tolerance for foodstuffs.

REFERENCES:
patent: 3044979 (1962-07-01), Saville
patent: 3448072 (1969-06-01), Ashby
patent: 3658939 (1972-04-01), Carpenter et al.
patent: 3740254 (1973-06-01), Lansbury et al.
patent: 4009312 (1977-02-01), Hayashi et al.
patent: 4138527 (1979-02-01), Malek

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