Treatment of latex emulsifiers

Details Treatment of latex emulsifiers Treatment of latex emulsifiers

1980-05-21

1981-03-31

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

260 975, 528230, C08L 9300

Patent

active

042594596

ABSTRACT:
An improved polymerization emulsifier for use in the manufacture of synthetic rubber is prepared wherein a mixture of tall oil fatty acids and resin acids as found in crude or distilled tall oil is disproportionated to reduce the amount of abietic type acids and linoleic type acids and treated with acid catalyzed formaldehyde or paraformaldehyde. The disproportionation and aldehyde treatment can occur in sequence or simultaneously. Emulsifiers prepared by the invention process minimize prefloc in latex production and improve rubber physicals.

REFERENCES:
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patent: 2409173 (1946-10-01), Webb
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patent: 2497882 (1950-02-01), Hampton
patent: 2503238 (1950-04-01), Gayer
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patent: 2617792 (1952-11-01), Floyd
patent: 2744889 (1956-05-01), Gayer et al.
patent: 2794017 (1957-05-01), Palmer et al.
patent: 3980630 (1976-09-01), Ishiaami et al.
Roberts et al., Basic Principles of Organic Chemistry, WA Benjamin, Inc., N.Y., 1964, p. 1109.

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