Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1988-07-11
1989-04-25
Hoke, Veronica P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
604332, 604355, 604407, 604408, C08K 511
Patent
active
048248932
ABSTRACT:
Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction test results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butyryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.
REFERENCES:
patent: 2322013 (1943-06-01), Gilbert
patent: 2618584 (1952-11-01), Evans et al.
patent: 2810659 (1957-10-01), Greminger
patent: 3025271 (1962-03-01), Borchert
patent: 3056818 (1962-10-01), Werber
patent: 3144422 (1964-08-01), Homberg
patent: 3251792 (1966-05-01), Homberg
patent: 3940802 (1976-03-01), Sako et al.
patent: 4007218 (1977-02-01), Ghanayem et al.
patent: 4133833 (1979-01-01), Hull
patent: 4222379 (1980-09-01), Smith
patent: 4280497 (1981-07-01), Warner et al.
patent: 4332122 (1982-06-01), Williams
patent: 4337768 (1982-07-01), Hutada et al.
E. H. Hull et al.: "Citric . . . Esters . . . PVC" Delivered to Society Plastics Ind. Brunswick, N.J., Oct. 20, 1983.
E. H. Hull et al.: "High Mol. Wt. Citric Acid Ester . . . PVC"-Delivered to Society Plastics Engineers, and Society of Plastics Industries, Anaheim, Calif., Mar. 22, 1984.
Plastics Tech. Jul. 1982, pp. 81 & 82.
Plastics Tech. Jul. 1984, pp. 75 and 76.
D. N. Butterey-Plasticizers 1st Ed. 55-70/1950).
D. N. Buttrey-Plasticizers, 2nd Ed. 187 & 200 (1957).
E. H. Hull et al.-Modern Plastics-May 1984.
D. B. Meyers et al.-J. Pharmaceutical Sciences-vol. 53, No. 7, 1984, pp. 774-777.
E. H. Hull et al., "High. Mol. Wt. Citric Acid Esters . . . . PVC" ANTEC 84 Plastics in a World Economy, pp. 1068-1072, May 1984.
J. Kern Sears & J. R. Darby-The Tech. of Plasticizers, pp. 856, 857, 897, 940, 967,976, 1001 & 1092 (1982).
Ullman's Encyclopedie der technischen Chemie, 4th ed., vol. 24, p. 368, para. 4.1.18.
Hoke Veronica P.
Morflex Chemical Company, Inc.
LandOfFree
Citrate esters and methods does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Citrate esters and methods, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Citrate esters and methods will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1196313