Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-05-17
1992-09-01
Zegler, Jacob
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
428343, 524323, 524401, C08L 5106, C08L 5302
Patent
active
051439727
ABSTRACT:
Adhesive composition comprising a blend consisting essentially of (1) an adhesive composition comprising a tacky pressure-sensitive adhesive, said adhesive preferably selected from rubber-based adhesives, e.g., the thermoplastic elastomers, and (2) a pressure-sensitive adhesive composition comprising a polymer having in its backbone at least a major portion by weight of polymerized monomeric acrylic or methacrylic acid ester of a non-tertiary alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4 to about 12, and grafted to the backbone, polymeric moieties having a Tg greater than about 20.degree. C. and a weight average molecular weight above about 2,000. The pressure-sensitive adhesive of adhesive composition (1) has moieties, e.g., blocks or grafts, that associate with the polymeric moieties grafted to the backbone of the polymer of adhesive composition (2). Pressure-sensitive adhesives prepared from the composition of this invention can be tailored to exhibit high values of peel adhesion with respect to both polar and non-polar surfaces, a high level of tack, and a high level of static shear.
REFERENCES:
patent: 4209594 (1980-06-01), Welsh et al.
patent: 4243500 (1981-01-01), Glennon
patent: 4554324 (1985-11-01), Husman et al.
patent: 4699842 (1987-10-01), Jorgensen et al.
patent: 4835217 (1989-05-01), Jorgensen et al.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Weinstein David L.
Zegler Jacob
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