Graft copolymers prepared by two staged aqueous emulsion polymer

Details Graft copolymers prepared by two staged aqueous emulsion polymer Graft copolymers prepared by two staged aqueous emulsion polymer

1993-06-03

1994-05-24

Jagannathan, Vasu S.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525274, 525279, 525291, 525296, 525302, 525309, 525317, 525 64, 525 70, 525212, 526263, 526287, 5263031, 526328, 5263297, 526341, 526343, 526344, 10628732, C08F25702, C08F25902, C08F26302, C08F26504, C08F29114, C08F27102, C08L 5100

Patent

active

053149777

ABSTRACT:
This invention relates to a two stage aqueous emulsion polymerization process for making graft copolymers. In the first stage, at least one first ethylenically unsaturated monomer is polymerized in the presence of at least one mercapto-olefin compound to form a macromonomer with terminal functional groups. In the second stage, at least one second ethylenically unsaturated monomer is polymerized in the presence of the macromonomer such that a copolymer is formed with a backbone of polymerized units of the at least one second ethylenically unsaturated monomer and side chains of the macromonomer.

REFERENCES:
patent: 3390206 (1968-06-01), Thompson et al.
patent: 3503940 (1970-03-01), Oswald
patent: 3862102 (1975-01-01), Mikovich et al.
patent: 4937297 (1990-06-01), Dean
patent: 5028677 (1991-07-01), Janowicz
patent: 5064495 (1991-11-01), Omura et al.
Graft Polymers with Macromonomers, I. Synthesis from Methacrylate-Terminated Polystryene, G. O. Schultz and R. Milkovich, Journal of Applied Polymer Science, vol. 27, 4473-4486 (1982).

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