Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1978-08-24
1980-04-29
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526 89, 526204, 526208, 526209, 526216, 526234, 526236, 526237, 526271, 526272, C08F 238, C08F22204, C08F22206, C08F22208
Patent
active
042007208
ABSTRACT:
Low molecular weight polymers of an unsaturated dicarboxylic anhydride monomer (e.g., maleic anhydride) and a copolymerizable monomer (e.g., styrene) are prepared by an improved process which comprises polymerizing the monomers in the presence of the hydroxide or a nucleophilic salt of a monovalent cation (e.g., a nucleophilic salt or the hydroxide of the ammonium cation, a quaternary ammonium compound, a protonated primary, secondary or tertiary amine, a sulfonium compound, a phosphonium compound or an alkali metal cation). By the practice of this process, low molecular weight polymers are conveniently and economically obtained without the use of high catalyst concentrations, high temperatures, conventional chain transfer agents, high boiling chain transfer solvents or combinations thereof.
REFERENCES:
patent: 2606891 (1952-08-01), Rowland
patent: 2640819 (1953-06-01), Barrett
patent: 2744098 (1956-05-01), Towne
patent: 2798062 (1957-07-01), Contois
patent: 2913437 (1959-11-01), Johnson
patent: 2938016 (1960-05-01), Johnson
patent: 3085994 (1963-04-01), Muskat
patent: 3178395 (1965-04-01), Muskat
patent: 3342787 (1967-09-01), Muskat
patent: 3380972 (1968-04-01), Le Blanc
patent: 3392155 (1968-07-01), Muskat
patent: 3451979 (1969-06-01), Muskat
patent: 3474114 (1969-10-01), Kuhlkamp et al.
patent: 3558570 (1971-01-01), Rinno et al.
patent: 3926925 (1975-12-01), Kuntz
patent: 3929738 (1975-12-01), Curtis et al.
patent: 3972903 (1976-08-01), Gross
patent: 4074036 (1978-02-01), Tuller et al.
Evani Syamalarao
Raymond Russell J.
Guffey James B.
Kight III John
The Dow Chemical Company
LandOfFree
Process for the preparation of low molecular weight anhydride in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the preparation of low molecular weight anhydride in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of low molecular weight anhydride in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1684620