Process for preparing solid polyvinyl ester resins

Details Process for preparing solid polyvinyl ester resins Process for preparing solid polyvinyl ester resins

2005-09-06

2005-09-06

Cheung, William K. (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S210000, C526S319000, C526S330000, C526S321000

Reexamination Certificate

active

06939931

ABSTRACT:
The invention relates to a process for preparing solid polyvinyl ester resins using a bulk or solution polymerization process in the presence of a chain transfer agent, wherein one or more vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms are polymerized in the presence of a compound selected from the group consisting of monovalent aliphatic alcohols having 1 to 6 carbon atoms, esters of aliphatic monocarboxylic acids and aliphatic alcohols each having 1 to 4 carbon atoms, or aliphatic ketones having 3 to 6 carbon atoms.

REFERENCES:
patent: 2704753 (1955-03-01), Monaghan
patent: 3804886 (1974-04-01), Hoffman et al.
patent: 5326644 (1994-07-01), Scholz et al.
patent: 5866655 (1999-02-01), Fujiwara et al.
patent: 1235591 (1967-03-01), None
patent: 2830324 (1979-02-01), None
patent: 0 230 506 (1987-08-01), None
patent: 67-22055 (1967-10-01), None
patent: 51-87594 (1976-07-01), None
patent: 57105410 (1980-12-01), None
patent: 58-38793 (1983-03-01), None
patent: 01026602 (1989-01-01), None
JP 73038793B (abstract), Derwent Publication (1973).
English Caplus Abstract corresp. to JP 67-22055 [AN 1968: 40304].
English Caplus Abstract corresp. to JP 51-87594 [AN 1976: 561169].
CPI-Profile Booklet—Abstract corresp. to JP 58-38793.
Derwent Abstact corresp. to DE 1235591 [AN 1968-21940P].
Derwent Abstract corresponding to DE 2830324 [AN 1979—12242B].
Japio Abstract corresponding to JP 01026602 [AN 1989-026602].
Derwent Abstract corresponding to JP 57105410 [AN 1982-66603E].

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