Organic reinforcing fillers for rubber

Details Organic reinforcing fillers for rubber Organic reinforcing fillers for rubber

1975-07-18

1976-08-03

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 4AR, 260 5, 260876B, 260886, 526 85, 526173, 526336, C08L 906

Patent

active

039729630

ABSTRACT:
Organic reinforcing fillers for rubber are prepared by the anionic initiated slurry polymerization of styrene and divinylbenzene in the presence of a block polymer dispersant. The polymerization reaction may be carried out using, as the anionic initiator, an alkali metal-bearing compound capable of initiating polymerization of styrene without imparting to the polymerization product groups reactive with rubber in a rubber cure in which case the polymerization is terminated by reaction of the polymer particles with a terminating agent that provides in the polymer groups reactive with rubber in a normal rubber cure; or the polymerization reaction can be carried out using, as the initiator, an alkali metal-bearing unsaturated polymer that in itself imparts to the polymer groups reactive with rubber in a normal rubber cure. In the latter case, the slurry polymerization may, if desired, be terminated by use of a terminating agent that reacts with and imparts to the polymer additional and different groups tha enhance reactivity of the polymer particles with rubber in a rubber cure operation.

REFERENCES:
patent: 3135716 (1964-06-01), Uraneck
patent: 3520838 (1970-07-01), Burke
patent: 3734978 (1973-05-01), Schwab

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