Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1997-05-20
1999-09-21
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525184, 525284, 5253337, 525387, C08F25502, C08F 846
Patent
active
059555475
ABSTRACT:
A novel, continuous process for the manufacture of novel higher molecular weight and higher acid numbered maleated polypropylenes with lower color at higher efficiencies involving specified ratios of polypropylene, maleic anhydride, and free radical initiator is described. The novel maleated polypropylenes have an acid number greater than 4.5, a yellowness index color of no greater than 76, and a number average molecular weight of at least 20,000. The process entails continuously forming an intimate mixture of molten polypropylene and molten maleic anhydride at one end of a reactor, continuously introducing a free radical initiator, and continuously removing high acid number high molecular weight maleated polypropylene of low color from the opposite end of the reactor.
REFERENCES:
patent: 3414551 (1968-12-01), Reid et al.
patent: 3480580 (1969-11-01), Joyner et al.
patent: 3481910 (1969-12-01), Brunson
patent: 3642722 (1972-02-01), Knowles et al.
patent: 3862265 (1975-01-01), Steinkamp
patent: 3932368 (1976-01-01), McConnell et al.
patent: 4003874 (1977-01-01), Ide et al.
patent: 4026967 (1977-05-01), Flexman, Jr. et al.
patent: 4028436 (1977-06-01), Bogan et al.
patent: 4031062 (1977-06-01), Shirayama et al.
patent: 4071494 (1978-01-01), Gaylord
patent: 4218263 (1980-08-01), Kawabata et al.
patent: 4315863 (1982-02-01), Tomoshige et al.
patent: 4347341 (1982-08-01), Bartl et al.
patent: 4358564 (1982-11-01), Ames
patent: 4370450 (1983-01-01), Grigo et al.
patent: 4376855 (1983-03-01), Ames
patent: 4404312 (1983-09-01), Kokubu et al.
patent: 4506056 (1985-03-01), Gaylord
patent: 4548993 (1985-10-01), Garagnani et al.
patent: 4612155 (1986-09-01), Wong et al.
patent: 4613679 (1986-09-01), Mainord
patent: 4632962 (1986-12-01), Gallucci
patent: 4639495 (1987-01-01), Waggoner
patent: 4751270 (1988-06-01), Urawa et al.
patent: 4762890 (1988-08-01), Strait et al.
patent: 4780228 (1988-10-01), Gardiner et al.
patent: 4857600 (1989-08-01), Gross et al.
patent: 4927888 (1990-05-01), Strait et al.
patent: 4987190 (1991-01-01), Keogh
patent: 5001197 (1991-03-01), Hendewerk
patent: 5021510 (1991-06-01), Vroomans
patent: 5073590 (1991-12-01), Abe et al.
patent: 5091469 (1992-02-01), Miller et al.
patent: 5264476 (1993-11-01), Daimon et al.
Uniroyal Chemical Company Material Safety Data Sheet (MSDS), MSDS No. P579015, Issued Oct. 15, 1993, Tradename: Polybond 3150, Chemical Name: Polypropylene, modified.
Journal of Applied Polymer Science, Effect of Compatibilization on the Properties of Polypropylene/Polyamide-66 (75/25 Wt/Wt) Blends, Apr. 11, 1994, pp. 195-206.
Uniroyal Product Information, Polybond Modified Polyolefin, Effective Date: Mar. 15, 1995.
Reactive Extrusion, Plastics Formulating and Compounding, May/Jun. 1996, pp. 33,35,36.
Database WPI, Week 9351, Derwent Publicaitons Ltd., London, GB; AN-93-410862 & JP,A,05 310 817 (Toyobo KK), Nov. 22, 1993 (see abstract).
Stevens, M. P., Polymer Chemistry, (Addison-Wesley), 1975, pp. 196-202.
Gaylord, N. G, et al., Journal of Applied Polymer Science, vol. 44, 1992, pp. 1941-1949.
Coe Stephen Wayne
Roberts Thomas David
Eastman Chemical Company
Gwinnell Harry J.
Tubach Cheryl J.
Wood Jonathan D.
Zitomer Fred
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