Process for preparing diene-containing rubbers having improved g

Details Process for preparing diene-containing rubbers having improved g Process for preparing diene-containing rubbers having improved g

1980-03-24

1982-07-06

Wong, Jr., Harry

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526217, 526221, 526225, 526304, 524156, 524166, 524272, C08F21208, C08F21234, C08F22058

Patent

active

043384250

ABSTRACT:
The invention disclosed herein provides a process for preparing a diene-containing synthetic rubber having improved green strength which includes the steps of charging a reaction vessel with water, an emulsifier, an initiator, an N-(alkoxymethyl)acrylamide monomer and a monomer containing a vinyl group, purging the vessel with an inert gas, charging a diene monomer and an activator to the vessel, polymerizing the monomers to form a copolymer; and, thereafter extracting the copolymer from the vessel and any unreacted monomers. A styrene-butadiene composition containing up to about 10 percent by weight of N-(isobutoxymethyl)acrylamide exhibits better stress-strain properties than a comparable styrene-butadiene rubber without the acrylamide compound.

REFERENCES:
patent: 3037963 (1962-06-01), Christenson
patent: 3118852 (1964-01-01), Christenson et al.
patent: 3247139 (1966-04-01), Christenson et al.
patent: 3832317 (1974-08-01), Mikofalvy et al.
patent: 4254013 (1981-03-01), Friedman et al.

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