Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2005-05-03
2005-05-03
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C264S176100, C264S219000, C528S198000
Reexamination Certificate
active
06887969
ABSTRACT:
Usually, polycarbonate polymerization is limited by the rate at which inhibitory byproducts, such as phenol and salicylate, can be removed from the reaction. To facilitate the removal of volatile reaction byproducts from the reaction as polymerization occurs, the present invention provides a spray mist reactor. The formation of a spray mist polymerization reaction allows for the creation of an enormous surface area for exchange of volatile byproducts. The present invention is applicable to polymerization of polycarbonate and its copolymers starting with monomers or oligomers. The invention may be used to increase throughput and minimize initial investment for a give melt process, especially the fast reacting bis(methylsalicylate) carbonate process.
REFERENCES:
patent: 4323668 (1982-04-01), Brunelle
patent: 6245878 (2001-06-01), Ito
patent: 6414178 (2002-07-01), Silva et al.
patent: 0 764 673 (1999-11-01), None
patent: 10036497 (1998-02-01), None
patent: 10101786 (1998-04-01), None
patent: 10101787 (1998-04-01), None
patent: 11302228 (1999-11-01), None
patent: 2001158821 (2001-06-01), None
patent: WO 9845246 (1998-10-01), None
patent: WO 9947580 (1999-09-01), None
patent: WO 0063274 (2000-10-01), None
Day James
McCloskey Patrick J.
Smigeiski, Jr. Paul M.
Boykin Terressa
Oppedahl & Larson LLP
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