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US 6,320,000 B1Granted
Process for preparing polymers
OwnerJeanine Lee Hurry, Robert Hugh Schwartz +1inventors
InventorsJeanine Lee Hurry, Robert Hugh Schwartz, Richard Shu-Hua Wu
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Abstract
A process for preparing polymers is disclosed. The process utilizes displacement of air in a polymerization reactor with water vapor, a closed system, and a pump at high operating pressure to pump the polymer through a heat exchanger in an external loop, resulting in reduced volatile organic compound emissions.
Claims8
A process for preparing polymers comprising:
- providing an open system reactor;
- replacing air in the reactor with water vapor;
- closing the system;
- feeding at least one monomer to the reactor;
- reacting the at least one monomer in the reactor to form a polymer;
- and
- pumping the polymer at high operating pressure in an external loop through a heat exchanger back to the reactor.
4 more elements
A method for reducing VOC emissions during a polymerization process comprising:
- a) providing an open system reactor;
- b) replacing air in the reactor with water vapor;
- c) closing the system;
- d) feeding at least one monomer to the reactor;
- e) reacting the at least one monomer in the reactor to form a polymer;
- and
- f) pumping the polymer at high operating pressure in an external loop through a heat exchanger back to the reactor.
4 more elements
Dependencies are inferred from the claim text.