Bulk Polycondensation process for producing aromatic polyesters

Details Bulk Polycondensation process for producing aromatic polyesters Bulk Polycondensation process for producing aromatic polyesters

1981-01-14

1982-04-27

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528173, 528176, C08G 6322

Patent

active

043272053

ABSTRACT:
A process for producing by bulk polycondensation an aromatic polyester of the formula, ##STR1## wherein X is a hydrocarbon radical having 1 to 20 carbon atoms, --O--, --SO.sub.2 --, --S--, or --CO--, m is 0 or 1 and n is 0 or 1; when p=0, q=r=an integer of 3 to 600; when q=r=0, p=an integer of 3 to 600; when p.noteq.0, q.noteq.0 and r.noteq.0, p+q+r=3 to 600; p, q, r are integers and q=r, which comprises using a horizontal jacketed reactor provided with one or two agitator shafts bearing impellers fixed thereto and carrying out the bulk polycondensation in said reactor while circulating a heat-transfer medium through the jacket, agitator shaft(s), and, if necessary, impellers to heat or cool the reaction system to obtain a particulate material having a weight-average particle size of 0.5 to 20 mm.

REFERENCES:
patent: 4107143 (1978-08-01), Inata et al.
patent: 4196276 (1980-04-01), Schreckenberg et al.
patent: 4287332 (1981-09-01), Jackson et al.

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