Stabilized adhesive microspheres

Details Stabilized adhesive microspheres Stabilized adhesive microspheres

1996-10-11

1998-05-26

Szekely, Peter A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

523218, 523223, 526278, 526287, 526307, 5263077, 526312, C08F 1802, C08F21802, C08F 2010, C08F 1230

Patent

active

057566259

ABSTRACT:
Stabilized microsphere adhesive composition comprising: a plurality of polymeric, elastomeric microspheres wherein the microspheres are the reaction product of reactants comprising polymerizable starting materials comprising at least one C.sub.4 -C.sub.14 alkyl (meth)acrylate monomer and optionally at least one comonomer, at least one vinyl-unsaturated additive having both an ionic moiety and a hydrophobic moiety and containing at least 5 but not more than 40 carbon atoms in an amount about 0.1 to 3 parts by weight of the microspheres; optionally, a polymeric stabilizer in an amount of between about 0.1 and about 3 parts by weight per 100 parts by weight of the microspheres; a surfactant in an amount of no greater than about 5 parts by weight per 100 parts by weight of the microspheres; optionally a modifier, wherein the modifier is at least one of a chain transfer agent, a tackifier, a solvent or the like in an amount that is sufficient to provide microspheres with a n-heptane soluble portion in the range of 30-98%; and (f) an initiator in an amount effective to catalyze the polymerization reaction present in amounts ranging from about 0.1 to approximately 2 parts by weight per 100 parts by weight of the polymerizable monomer starting material.

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