Method of continuously dissolving rubber

Details Method of continuously dissolving rubber Method of continuously dissolving rubber

1998-04-07

1999-07-27

Szekely, Peter A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528491, 528492, 528497, 525 52, 525 53, C08J 311, C08F 606, C08G 6391

Patent

active

059292059

ABSTRACT:
A method of dissolving a rubber continuously to form a raw material for the production of rubber-modified polymer, by dissolving a rubber in a monomer liquid dissolving the rubber and capable of reacting with the rubber in the presence or absence of a solvent. Pieces of rubber are fed continuously to a dissolution tank to allow the dissolved rubber and the undissolved rubber to coexist in the dissolution tank, wherein the concentration of the dissolved rubber is the concentration at which the feeding to the reactor is made, and the quantity of the undissolved rubber present in the dissolution tank is at most the quantity that prevents pieces of the undissolved rubber from sticking to one another to form larger rubber masses. The time required for dissolution can be shortened, and the size of a dissolution tank can be made smaller, compared with the conventional methods.

REFERENCES:
patent: 3903040 (1975-09-01), Politte
patent: 4419488 (1983-12-01), Fukumoto et al.

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