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
1986-05-22
1987-12-01
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, 604408, 604407, C08K 511
Patent
active
047105321
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 et al.
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), Gharayem 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), Hatada et al.
M&T Brochures: Fascat 4102 Catalyst, (4/80); Fascat 5004 Catalyst, (1978); Fascat Catalyst 5008, (1978).
Du Pont Brochure-Tyzor Organic Titanates, 10-15-81, CA 96, 7480x, 1982.
Morflex Chemicals Data Sheets BD&BE published 12/83.
Pfizer Chemicals Data Sheets: BA, BB&BC, published 1/82, 4/82 and 10/82.
D. N. Buttrey: Plasticizers, 1st edition, pp. 55-57, (1950).
D. N. Buttrey: Plasticizers, 2nd edition, pp. 187 and 200, (1957).
J. Kern Sears and Joseph R. Darby: The Technology of Plasticizers, pp. 856, 857, 897, 940, 967, 976, 1001 and 1092, (1982).
E. H. Hull, et al.: Modern Plastics, May 1984.
E. H. Hull, et al., High Molecular Weight Citric Acid Esters as Effective Plasticizers for Medical-Grade PVC-Antec 84, Plastics in A World Economy--pp. 1068-1072, May 2, 1984.
Plastics Technology-Jul. 1984, pp. 75 and 76.
Plastics Technology--Jul. 1982, pp. 81 and 82.
D. B. Meyers, et al.--J. Pharmaceutical Sciences--vol. 53, No. 7, 1984, pp. 774-777.
E. H. Hull, et al.: Citric Acid Esters . . . Medical Grade PVC-Delivered to Socty Plastic Industries-Brunswick, N.J., Oct. 20, 1983.
E. H. Hull, et al.: High Molecular Weight Citric Acid Esters . . . Medical-Grade PVC-Delivered by Society of Plastics Engineers and Socity Plastic Industries, Anaheim, Calif., Mar. 22, 1984.
Frappier Edward P.
Hull Ezekiel H.
Hoke Veronica P.
Morflex Chemical Company, Inc.
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