Repulpable pressure-sensitive adhesive compositions

Details Repulpable pressure-sensitive adhesive compositions Repulpable pressure-sensitive adhesive compositions

1991-10-15

1993-03-23

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

524460, C08F22006, C08F22010, C08F 216

Patent

active

051965046

ABSTRACT:
A water dispersible, inherently tacky pressure-sensitive adhesive comprising a tacky emulsion polymer formed of from about 80 to 90% by weight of monomers comprising a major portion of at least alkyl acrylate containing from 4 to about 8 carbon atoms in the alkyl group and from about 20 to 10% by weight of a mixture of acrylic acid with at least an oleophilic unsaturated carboxylic acid, said emulsion polymer formed in the presence of anionic and nonionic surfactants and a sufficient amount of chain transfer agent to provide a polymer having a glass transition temperature of -15.degree. to -50.degree. C. The emulsion polymers when coated on a repulpable paper substrate being sufficiently dispersible to enable recovery of paper fibers substantially free of adhesive under conditions of TAPPI Useful Method 213, and resistant to loss of adhesive properties on exposure to high humidity.

REFERENCES:
patent: 4759983 (1988-07-01), Knutson et al.
patent: 5049416 (1991-09-01), Wilczynski

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