Dimer reduction

Details Dimer reduction Dimer reduction

1989-06-20

1993-03-16

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5262321, 526316, C08F 434, C08F 1636

Patent

active

051945282

ABSTRACT:
The dimer content in alpha, beta- ethylenically unsaturated ketones may be reduced by treating the ketone with a peroxide of the formula ##STR1## wherein R.sub.4 is a C.sub.1-6 branched or straight chain alkyl radical or a C.sub.6-10 aromatic radical and n is 1 or 2. The treated ketone has a faster rate of polymerization with other ethylenically unsaturated monomers.

REFERENCES:
patent: 2851497 (1958-09-01), Stearns et al.
patent: 3009005 (1961-11-01), Schaffel
patent: 4134811 (1979-01-01), De Poortere et al.
patent: 4758639 (1988-07-01), Koyanagi et al.
Chemical Abstracts vol. 98, 1983 No. 98:82425c "Multilayer Interconnecting Structure".
Chemical Abstracts vol. 100, No. 100:219136r "Dry Photochemical Etching for Pattern Formation".
Chemical Abstracts vol. 101, 1984 No. 101:46307n "Negative-type Photoresist".
David M. Wiles, "Polymerization of Alpha-Beta-Unsaturated Carbonyl Compounds" pp. 223-281 from Structure and Mechanism in Vinyl Polymerization 1969.

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