Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1995-03-03
1996-09-03
Dodson, Shelley A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528328, 528361, 525418, 525419, 525420, C08G 6910
Patent
active
055525172
ABSTRACT:
There is disclosed a process for preparing polysuccinimides by the thermal condensation of amino acids such as L-aspartic acid in high boiling organic reaction medium whereby a polymer is provided having highly desirable color characteristics. The organic medium is selected from high boiling alkyl alcohols having from 7 to 14 carbon atoms such as isodecanol and high boiling alkanes having from 10 to 20 carbon atoms such as dodecane. The organic medium can be employed in conjunction with acid catalysts for the condensation reaction and can be easily recovered for reuse with little or no need for purification.
REFERENCES:
patent: 3846380 (1974-11-01), Fujimoto et al.
patent: 4333844 (1982-06-01), Duggleby et al.
patent: 4363797 (1982-12-01), Jacquet et al.
patent: 4407722 (1983-10-01), Davies et al.
patent: 4428749 (1984-01-01), Morris
patent: 4971724 (1990-11-01), Kalota et al.
patent: 5057597 (1991-10-01), Koskan
patent: 5142062 (1992-08-01), Knebel et al.
patent: 5219986 (1993-06-01), Cassata
patent: 5221733 (1993-06-01), Koskan et al.
patent: 5266237 (1993-11-01), Freeman et al.
patent: 5315010 (1994-05-01), Koskan et al.
patent: 5319145 (1994-06-01), Paik et al.
patent: 5371179 (1994-12-01), Paik et al.
patent: 5380447 (1995-01-01), Kirk et al.
patent: 5380817 (1995-01-01), Paik et al.
"Temperature Effect on the Molecular Weight and the Optical Purity of Anhydropolyaspartic Acid Prepared by Thermal Polycondensation", Bulletin of the Chemical Society of Japan, vol. 51(5), 1555-1556 (1978), Kokufuta et al.
J.O.C.S., vol. 26, 1084-1091 (1961), J. Kovacs et al.
Technical Bulletin No. 9171A "Cooling/Heating Fluid FDA Grade, Low Odor-120F to 500" Therminol D-12 Heat Transfer Fluid by Monsanto Company.
National Council on Research and Development NRCD 8-76, Seawater Desalination 150-157 (1977), Sarig et al.
Dodson Shelley A.
Hampton-Hightower P.
Monsanto Company
Murphy Michael J.
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