Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1980-04-25
1982-02-16
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528128, 528173, 528179, 528193, C08G 6302
Patent
active
043160042
ABSTRACT:
A process for producing oxybenzoyl copolyesters comprising 3 to 300 of repeating unit of the formula, ##STR1## wherein m and n are each 0 or 1, and W is --O--, --SO.sub.2 --, --S-- or --CO--, which comprises reacting a compound of the formula, ##STR2## wherein R.sup.1 is a hydrogen atom, a benzyl, lower alkyl or phenyl group, and Y is a hydrogen atom or a lower alkanoyl group, with a compound of the formula, ##STR3## wherein X is a halogen atom, in the presence of an aliphatic, alicyclic or aromatic hydrocarbon solvent having a boiling point of 100.degree. to 260.degree. C. under atmospheric pressure to produce bis(carboxyphenyl)phthalate, adding a compound of the formula, ##STR4## wherein W is --O--, --SO.sub.2 --, --S-- or --CO--, Z is a hydrogen atom or an alkanoyl group, and m and n are each 0 or 1, and optionally a compound of the formula, ##STR5## wherein R.sup.2 and R.sup.3 are each a hydrogen atom, a benzyl, lower alkyl or phenyl group, and carrying out polycondensation with the removal of the solvent and byproducts so that the polycondensation system is made substantially free from the solvent at least at the end of the polycondensation to carry out substantial bulk polycondensation.
REFERENCES:
patent: 2600376 (1952-06-01), Caldwell
patent: 2728747 (1955-12-01), Aelony et al.
patent: 3637595 (1972-01-01), Cottis
patent: 3759870 (1973-09-01), Economy et al.
patent: 3767621 (1973-10-01), Suzuki et al.
patent: 3857814 (1974-12-01), Economy et al.
patent: 3884876 (1975-05-01), Cottis et al.
patent: 3980749 (1976-09-01), Cottis et al.
patent: 4067852 (1978-01-01), Calundann
patent: 4146702 (1979-03-01), Morris et al.
patent: 4219629 (1980-08-01), Storm
Gilkey et al., J. Applied Polymer Sci., 2, No. 5, 1959, pp. 198-202.
Encyclopedia of Polymer Science and Technology, "Plastics, Resins, Rubbers, Fibers", vol. 1, 1969, Interscience Publishers, NY, p. 95.
Imai Shozaburo
Sugimoto Hiroaki
Sumitomo Chemical Company Limited
Welsh Maurice J.
LandOfFree
Process for producing oxybenzoyl copolyesters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing oxybenzoyl copolyesters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing oxybenzoyl copolyesters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-943204