Light weight plastisols and method of making same

Details Light weight plastisols and method of making same Light weight plastisols and method of making same

1996-01-29

1997-08-19

Szekely, Peter A.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523204, 523205, 524296, 524569, C08J 932, C08K 906, C08K 904, C08L 2704

Patent

active

056589697

ABSTRACT:
Plastisol coatings and adhesives having reduced bulk density are provided by incorporating hollow thermoplastic microspheres, wherein the surface of the microspheres is wet by a surfactant which preferentially wets the surface of the microspheres, where the total solids content of the plastisol does not exceed the critical pigment volume concentration, and where the temperature and pressure of processing and use of the microsphere filled plastisol are kept to the minimums required for effective operation. Preferred hollow thermoplastic microspheres having a thermally bonded surface coating of a solid particulate material, such as calcium carbonate, silica, or the like are employed where the thermoplastic of the microspheres is wet by a surfactant which preferentially wets the surface of the thermoplastic and where the solid particulate material on the surface is wet by a surfactant or plasticizer which preferentially wets the solid particles are particularly effective in such plastisol coatings and adhesives.

REFERENCES:
patent: 5171766 (1992-12-01), Mariano et al.
patent: 5212215 (1993-05-01), Nanri et al.
patent: 5356957 (1994-10-01), Nanri et al.

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