Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1988-06-16
1990-01-23
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502159, 502162, 502167, 528286, B01J 3102, B01J 3106
Patent
active
048958174
ABSTRACT:
Condensation polymers of high molecular weight, such as polyesters, polyureas, and polyamides, are usually prepared at temperatures of 200.degree. C. or greater. However, by utilizing the catalyst system of the present invention condensation polymers can be synthesized at much lower temperatures. These catalyst systems are comprised of (1) a silicon-phosphorus composition which contains at least one divalent oxygen atom which is bonded directly to a tetravalent silicon atom and a trivalent or pentavalent phosphorus atom; and (2) at least one acid acceptor. For example, P(OSiR.sub.3).sub.3 wherein R can be an aliphatic or aromatic hydrocarbon radical, can be used in conjunction with a basic solvent as a catalyst system. Polymeric agents having pendant diphenylphosphine dichloride groups can also be used in conjunction with an acid acceptor as a catalyst system.
REFERENCES:
patent: 4077944 (1978-03-01), Weinberg et al.
patent: 4156072 (1979-05-01), Weinberg et al.
patent: 4668762 (1987-05-01), Ogata
patent: 4778873 (1988-10-01), Ogata
Chem. Ab., vol. 96, No. 23, Jun. 7, 1982, p. 685, 199793w.
Kitayama et al, "Synthesis of Aromatic Polyesters by Direct Polycondensation with Triphenylphosphine Dichloride", 22 J. Polymer Sci. Polymer Chemistry Ed., (1948), pp. 2705-2712.
Chem. Abstracts, vol. 69, No. 1, Jul. 1, 1968, p. 3676, 3670d.
Garvin Patrick P.
Rockhill Alvin T.
The Goodyear Tire & Rubber Company
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