Method of forming microcapsules, microcapsular dispersion, and p

Details Method of forming microcapsules, microcapsular dispersion, and p Method of forming microcapsules, microcapsular dispersion, and p

1978-12-18

1980-08-26

Lovering, Richard D.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

252316, 282 275, 424 32, 428327, 428914, B01J 1302, B32B 326

Patent

active

042196043

ABSTRACT:
A method of forming microcapsules having high heat resistance and low permeability which comprises the step of forming wall films of urea-formaldehyde resin around individual droplets of a hydrophobic oily solution through the polymerization reaction of urea and formaldehyde in the presence of carboxylated polyvinyl alcohol.

REFERENCES:
patent: 3707514 (1972-12-01), Vassiliades et al.
patent: 3789015 (1974-01-01), Matsukawa et al.
patent: 4001140 (1977-01-01), Foris et al.
patent: 4089802 (1978-05-01), Foris et al.

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