Aminoplast- and phenoplast- resin encapsulated particles

Details Aminoplast- and phenoplast- resin encapsulated particles Aminoplast- and phenoplast- resin encapsulated particles

1997-06-18

1999-10-05

Le, Hoa T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

4272133, 42721332, 427215, 427221, 524401, B32B 516

Patent

active

059621346

ABSTRACT:
Aminoplast and phenoplast particles are obtained by providing an aqueous solution of such a resin having a water tolerance level, adding a particulate core-forming material in solid form, e.g. mineral particles or cured resin particles, as well as a mixture of water and a stabilizing agent, the amount of water being sufficient to exceed the water tolerance level of the aminoplast or phenoplast, and thus forming an emulsion or suspension of the resin coated particles in water, and advancing cure of the resin to form partially or fully cured resin coatings having a thickness preferably about 5-75 .mu.m encapsulating the particulate core-forming material.

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patent: 5545476 (1996-08-01), O'Dell et al.
patent: 5728797 (1998-03-01), O'Dell et al.
patent: 5760104 (1998-06-01), Gerber

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