Blushed polystyrene pigment

Details Blushed polystyrene pigment Blushed polystyrene pigment

1974-12-03

1976-01-06

Turer, Richard B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

162168N, 162169, 260893, C08J 900

Patent

active

039310612

ABSTRACT:
A blushed and opaque pigment consisting essentially of spherical particles having a high optical efficiency and an average particle diameter in the range of from about 0.1 to 0.2 micron is produced from a polystyrene containing latex emulsion. The blushed and opaque particles have an air containing microporous structure as a result of air-solid interfaces within the pigment particles, which interfaces are created when the particles are penetrated and swollen by a swelling agent for the particle material and then the swelling agent is removed to set the particles in their swollen and blushed state.

REFERENCES:
patent: 3255127 (1966-06-01), Von Bonin
patent: 3371053 (1968-02-01), Raskin
patent: 3472801 (1969-10-01), Lerman et al.

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