Pressure sensitive adhesive and adhesive coated product

Details Pressure sensitive adhesive and adhesive coated product Pressure sensitive adhesive and adhesive coated product

1994-02-16

1995-06-27

Zirker, Daniel R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

4285375, 428355, 428496, 525 84, 524925, 524928, 524 88, B32B 712, B32B 2900, C08L 702

Patent

active

054278511

ABSTRACT:
A pressure sensitive adhesive composition is provided for use on cellulosic substrates which will not become tacky under high temperatures, lose adhesive properties due to contact with silicone oils, "block" when stacked prior to printing, or lose bond-forming ability with age. Non-thermoplastic pigment particles and a compound selected from the group consisting of a natural rubber latex, a graft copolymer of natural rubber and acrylic monomer and a blend of the natural rubber latex and the graft copolymer are mixed together to form an adhesive with a glass transition temperature in the range of -10.degree. to -78.degree. C., a dielectric constant of about 2.25 to 2.62 and a green strength of 0.05 to 0.75 p.s.i. The adhesive may also optionally contain a chloroprene-methacrylic acid copolymer latex and a vinyl-methacrylic acid copolymer latex.

REFERENCES:
patent: 3778306 (1973-12-01), Stow
patent: 3981958 (1976-09-01), Nakashima et al.
patent: 4284541 (1981-08-01), Takeda et al.
patent: 4755550 (1988-07-01), Shuman et al.
patent: 4918128 (1990-04-01), Sakai
patent: 4942201 (1990-07-01), Briggs et al.
patent: 5190818 (1993-03-01), Sakai
patent: 5193850 (1993-03-01), Lombardo
patent: 5288014 (1994-02-01), Meyers et al.

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