Precondition for inverting, mixing, and activating polymers

Details Precondition for inverting, mixing, and activating polymers Precondition for inverting, mixing, and activating polymers

2005-04-26

2005-04-26

Soohoo, Tony G. (Department: 1723)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C366S144000, C366S137000, C366S162100, C366S348000, C422S132000, C264S101000, C137S007000

Reexamination Certificate

active

06884867

ABSTRACT:
A process for activating polymer including preconditioning a diluent by heating it to a high temperature and then mixing the heated diluent with the polymer to form a blend having a high polymer content (e.g., about 5% polymer and 95% hot diluent). The blend is activated and then diluted by mixing it with a cold or cool diluent in order to provide an output stream of about 0.25-2% polymer having a relatively low temperature. The high temperature and high polymer content enables a continuous process, as distinguished from batch processes used heretofore which required substantial holding time in an aging tank. The reduction of the temperature of the blend by mixing it with cold or cool diluent prevents damage to heat-sensitive polymers.

REFERENCES:
patent: 3242150 (1966-03-01), Scoggin
patent: 3402161 (1968-09-01), Norwood
patent: 5323017 (1994-06-01), Pardikes
patent: 5372421 (1994-12-01), Pardikes
patent: 6004024 (1999-12-01), Ho et al.
patent: 6384109 (2002-05-01), Witecki, Jr.

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