Sodium hydroxymethane sulfonate to improve the color stability o

Details Sodium hydroxymethane sulfonate to improve the color stability o Sodium hydroxymethane sulfonate to improve the color stability o

1990-01-22

1991-06-04

Anderson, Harold D.

Chemistry: natural resins or derivatives; peptides or proteins;

Natural resins or derivatives

Rosin or derivative used as starting material in process, or...

530210, 530212, 530219, 530226, C09F 104

Patent

active

050215485

ABSTRACT:
The color stability of rosin esters is improved by carrying out the esterification reaction in the presence of 0.05% to 5% sodium hydroxymethane sulfonate (SHS). The color stability of polymerized rosin is improved by heating at a temperature of 250.degree.-290.degree. C. in the presence of SHS.

REFERENCES:
patent: 3423389 (1969-01-01), Wheelus
patent: 3780012 (1973-12-01), Smith
patent: 3780013 (1973-12-01), Smith
patent: 4339377 (1982-07-01), Hollis
patent: 4657703 (1987-04-01), Durkee
patent: 4657706 (1987-04-01), Durkee
Alexander, P., Preservatives and Stabilizers in the Patent Literature, 1982-1987, Cosmetics & Toiletries, pp. 89-92 (Dec. 1987).

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