Method for carrying out polymerization reactions

Details Method for carrying out polymerization reactions Method for carrying out polymerization reactions

2006-05-16

2006-05-16

Lipman, Bernard (Department: 1713)

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

Synthetic resins

Polymerizing in two or more physically distinct zones

C526S075000, C526S078000, C526S232300

Reexamination Certificate

active

07045581

ABSTRACT:
A method for carrying out homogenous polymerization reactions in a reactor, wherein monomers and/or prepolymers are fed (apportioned). In a first step, an initiator is optionally admixed with the monomer and/or prepolymer. In a second step, once viscosity is substantially higher, a solvent is added thereto and/or the monomer itself is partially evaporated, it is condensed externally and/or internally and fed back into the reactor.

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patent: 4833221 (1989-05-01), Albrecht
patent: 5378776 (1995-01-01), Matsumura et al.
patent: 5391631 (1995-02-01), Porsch et al.
patent: 5994492 (1999-11-01), Graham et al.
patent: 659646 (1987-02-01), None
patent: 691572 (2001-08-01), None

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