Ester hydrolysis and depolymerization of polyester and polycarbo

Cleaning and liquid contact with solids – Processes – Using sequentially applied treating agents

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134 42, 560 79, 562483, 562485, B08B 308

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active

050451227

ABSTRACT:
Ester bonds are hydrolyzed, such as in the conversion of polyesters to their monomeric components, by being contacted with a mixture of (a) an alcohol, such as methanol, or glycol, (b) a polar aprotic solvent such as N-methyl-pyrrolidone or dimethyl sulfoxide and (c) an alkoxide or hydroxide such as sodium hydroxide.

REFERENCES:
patent: 3120561 (1964-02-01), Chambret
patent: 3952053 (1976-04-01), Brown, Jr. et al.
patent: 4078143 (1978-03-01), Malik et al.
patent: 4163860 (1979-08-01), Delattre et al.
patent: 4355175 (1982-10-01), Puszkaszeri
patent: 4542239 (1985-04-01), Lamparter et al.
patent: 4578502 (1986-03-01), Cudmore
patent: 4605762 (1986-08-01), Mandoki
patent: 4620032 (1986-10-01), Doerr
patent: 4876378 (1989-10-01), VanSickle
ASTM Method D 2456 G. G. Esposito, Anal. Chem. 34 (1962) 1173.
D. Vink and R. vanWijk, Z. Anal. Chem. 264 (1973)293.
D. Nissen, V. Rossbach, and H. Zahn, J. Appl. Poly. Sci. 18 (1974)1953 ASTM Method D 2455.
G. G. Esposito and M. H. Swann, Anal. Chem. 34 (1962)1048.
R. Janssen, H. Ruysschaert, and R. Vroom, Makromol Chem. 77(1964)153.
S. J. Jankowski and P. Garner, Anal. Chem. 37 (1965)1709.
J. Rawlinson and E. L. Deeley, J. Oil Col. Chem. Assoc. 50 (1967)373.
P. Perlstein and P. Orme, J. Chromatogr. 351 (1986)203.
J. R. Kirby, A. J. Baldwin, and R. H. Heidener, Anal. Chem. 37 (1965)1306.
J. C. West, Anal. Chem. 47 (1975)1708.
L. H. Ponder, Anal. Chem. 40 (1968)229.
B. J. Allen, G. M. Elsea, K. P. Keller & H. D. Kinder, Anal. Chem. 49 (1977)741.
J. Miller and A. J. Parker, J. Am. Chem. Soc. 83 (1961)117.
J. A. Vinson, J. S. Fritz and C. A. Kingsbury, Talanta, 13 (1966)1673.
N. Isaacs, Physical Organic Chemistry, Longmin Scientific and Technical, Longman Group UK Limited, Essex, England.

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