Method for removing volatiles from a block copolymer

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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C526S335000, C526S337000, C526S346000, C526S347000

Reexamination Certificate

active

06962960

ABSTRACT:
A method and apparatus are disclosed for purifying copolymer compounds having monovinyl aromatic blocks and conjugated diene blocks by reducing the residual monomer content of the finished polymer. The method and apparatus includes a combination of heat exchangers and devolatilizers used in conjunction with a copolymerization reactor system.

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patent: 6143833 (2000-11-01), Klussmann et al.
patent: 0064554 (2000-11-01), None
“Falling-Strand Devolatilization,” Robert H.M. Simon, Polymer Devolatilization, edited by Ramon J. Abalalak, Marcel Dekker, Inc., NY, NY 1996.
Polymer Devolatilization, pp. 1-12, edited by Ramon J. Albalak, Marcel Dekker, Inc., NY, NY 1996.

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