Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-05-14
1992-07-07
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525125, 525166, 525179, 525194, C08L 3302, C08L 3308, C08L 3310, C08L 3312
Patent
active
051284120
ABSTRACT:
A removable adhesive composition comprising (i) 100 parts by weight of a copolymer (A) which is tacky at ordinary temperature, synthesized of 90 to 99.9% by weight of a nonfunctional vinyl type monomer (a) mainly composed of an acrylate or methacrylate ester having an alkyl group having 2 to 12 carbon atoms and 0.1 to 10% by weight of a functional vinyl type monomer (b) having one or more of a carboxyl group, a hydroxyl group, an amino group or an epoxy group in its molecule; (ii) 20 to 1,000 parts by weight of a copolymer (B) whose glass transition point is 10.degree. C. or less and also having a mean particle diameter of 0.5 to 300 .mu.m, synthesized of 90 to 99.9% by weight of a nonfunctional vinyl type monomer (a) mainly composed of acrylate or methacrylate ester having an alkyl group having 2 to 12 carbon atoms and 0.1 to 10% by weight of an .alpha.-monoolefinic carboxylic acid (c); and (iii) 0.01 to 5 parts by weight of a polyfunctional cross-linking agent (C) which is capable of reacting with the functional groups of said components (b) and (c), and the surfaces of said copolymer (B) being entirely covered with the copolymer (A).
The removable adhesive composition of this invention has excellent primary tack, adhesiveness and removability, and which, in particular, can be readily removed from an adherend without leaving any remanent adhesive composition on the adherend and also has excellent adhesiveness.
REFERENCES:
patent: 3691140 (1972-09-01), Silver
patent: 3773710 (1973-11-01), Victorius
patent: 4098945 (1978-11-01), Oehmke
patent: 4415697 (1983-11-01), Peng et al.
patent: 4468493 (1984-08-01), Ishikura et al.
patent: 4565730 (1986-01-01), Poth et al.
Kitazaki Yasuaki
Kobayashi Jun'ichi
Matsuda Tetsuaki
Miyasaka Hiroyasu
Marquis Melvyn I.
Nichiban Company Limited
Sellers II Robert E. L.
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