Copolymer of resin acids and maleic anhydride

Details Copolymer of resin acids and maleic anhydride Copolymer of resin acids and maleic anhydride

1989-04-12

1990-10-16

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

530214, C08F21004

Patent

active

049636308

ABSTRACT:
Copolymerization of maleic anhydride with the resin acids present in rosin, especially abietic-type resin acids (e.g., abietic acid and neoabietic acid), to form high molecular weight copolymers is disclosed. The polymerization is carried out in the presence of a free radical initiator such as AIBN. The temperature can range up to about 190.degree. C. and a solvent such as THF can also be present.

REFERENCES:
patent: 2072818 (1935-01-01), Humphrey
patent: 3582509 (1971-06-01), Staniak et al.
patent: 3692720 (1972-09-01), Sloan
patent: 4056498 (1977-11-01), Laurito
patent: 4260550 (1981-04-01), Armstrong et al.
patent: 4574057 (1986-03-01), Kaza et al.
patent: 4751025 (1988-06-01), Olechowski et al.

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