Cleavable branching agents in emulsion polymerization systems

Details Cleavable branching agents in emulsion polymerization systems Cleavable branching agents in emulsion polymerization systems

1975-11-25

1977-08-09

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 237A, 526222, 526223, 526224, 526335, 526337, 526338, 526340, C08F 216, C08F 222, C08F 238

Patent

active

040412270

ABSTRACT:
Bis(1,3-dienyl)dialkyltin, lead, and germanium compounds employed in the aqueous emulsion polymerization of conjugated dienes, optionally with vinyl comonomers, provide polymers with sufficiently high Mooney viscosity values as to be readily handled in plant operations, yet which exhibit controlled breakdown under milling to lower Mooney values suitable, for a variety of uses.

REFERENCES:
patent: 2160935 (1939-06-01), Wiley
patent: 2683705 (1954-07-01), Anspon et al.
patent: 3019215 (1962-01-01), Kroeper et al.
patent: 3272786 (1966-09-01), Perry

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