Process of polymerization in an aqueous system

Details Process of polymerization in an aqueous system Process of polymerization in an aqueous system

1992-05-01

1993-11-23

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526204, 526201, 526206, 526207, 526209, 526213, 526215, 526217, C08F 242

Patent

active

052645304

ABSTRACT:
A improved method of free radical polymerization in an aqueous system, such as an emulsion or suspension process. The polymerization is conducted in the presence of a relatively low molecular weight macromonomer such as can be made with a metal chelate chain transfer catalyst. This method is useful for reducing the molecular weight of a variety of polymers and copolymers, including acrylic and olefinic polymers.

REFERENCES:
patent: 3382297 (1968-05-01), Thompson
patent: 3968059 (1976-07-01), Shimada et al.
patent: 4170582 (1979-10-01), Mori et al.
patent: 4518726 (1985-05-01), Kato et al.
patent: 4526945 (1985-07-01), Carlson et al.
patent: 4547323 (1985-10-01), Carlson
patent: 4621131 (1986-11-01), Lin et al.
patent: 4680352 (1987-07-01), Janowicz et al.
patent: 4694054 (1987-09-01), Janowicz
patent: 4808656 (1989-02-01), Kania et al.
patent: 4965317 (1990-10-01), Kania et al.
"Reactivity of Macromonomers in Free Radical Polymerization" JMS-Rev. Macromol. Chem. Phys. C30(3&4) 305-377 (1990).
"The Chemistry of Unsaturated Oligomers and Polymers" David Scott Harrison, B. App. Sc. Jun. 1988 2-103.
Polymer Bulletin "The Use of Model Compounds in Interpreting the Thermal Degradation of Poly(Methyl Methacrylate)" 325-328 (1984).
"Catalyzed Chain Transfer to Monomer in Free Radical Polymerization" N. S. Enikolopyan, B. R. Smirnov, G. V. Ponomarev, and I. M. Belgovskii 879-889 (1981).
"Polym. Mater. Sci. Eng." 1986, 55, pp. 235-238 Reactive Dimers of . . . : Abbey K. J., G. M. Carlson.
"Copolymerization of Unsaturated Oligo (Methyl Methacrylate): New Macromonomers" P. Cacioli 839-852 (1986).
"Catalytic Chain-Transfer in Polymerization of Methyl Methacrylate. I. Chain-Length Dependence of Chain-Transfer Coefficient" R. Amin Sanayei (1989) 1137-1149.
"Polymerization Reactivity of Unsaturated End Group Generated during the Disproportionation in Termination Reaction of Methyl Methacrylate Polymerization:" Tanaka 1741-1748 (1989).
"Macromonomer prepared by polymerization of methyl methacrylate in the presence of ethyl .alpha.-(bromomethyl)acrylate" Bunichiro Yamada 513.518 (1990).
"Catalytic Chain Transfer in Polymerization of Methyl Methacrylate. II. Continuous Synthesis and Purification of Macromer" K. G. Suddaby 1565-1575.
"Dimethyl 1-Hexene-2,5-Dicarboxylate, Methyl Methacrylate Dimer, as Polymerizable Acrylic Ester Bearing Bulky .alpha.-Substituent" Takayuki Otsu 837-842 (1991).
"Preparation of poly(methyl methacrylate) macromonomer by radical polymerization in the presence of methyl .alpha.-(bromethyl)acrylate and copolymerization of the resultant macromonomer" Bunichiro Yamada 423-430 (1991).

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