Process for the preparation of expandable microspheres

Details Process for the preparation of expandable microspheres Process for the preparation of expandable microspheres

1972-07-26

1977-04-05

Lovering, Richard D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252316, C08J 920

Patent

active

040161102

ABSTRACT:
Uniformity in the polymerization of expandable microspheres disclosed in U.S. Pat. 3,615,972 is improved by replacing a copolymer of adipic acid and diethanol amine with citric acid.

REFERENCES:
patent: 2408656 (1946-10-01), Kirk
patent: 3359130 (1967-12-01), Goldman
patent: 3427250 (1969-02-01), Haas et al.
patent: 3505248 (1970-04-01), Banks et al.
patent: 3615972 (1971-10-01), Morehouse, Jr. et al.

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