Patent GB-985131-A (GB)
Title: Linear thermoplastic polyesters
IPC: C08G63/682
Filed: 1961-03-17
Abstract: Polyester or polysulphonates are made by condensing (a) an alkali metal diphenate in aqueous solution or suspension with (b) a diacid chloride of a dicarboxylic acid or a disulphonic acid dissolved or dispersed in an organic solvent immiscible with water and capable of dissolving or swelling the polymer produced by the reaction; the condensation being performed in the presence of a catalyst comprising at least one quarternary phosphonium compound or quarternary arsonium compound either as a free base or as a salt thereof. The diphenate may be that of a dihydric phenol which is a dihdroxy benzene or naphthalene or a bis-phenol in which the hydroxybenzene radicals are connected together by one or more groups selected from alkylene, alkylidene, cycloaliphatic, tertiary amino, carbonyl, sulphide, sulphoxide, sulphone or ether radicals. The alkylene or alkylidene group may be substituted by hydrocarbon or halogenated hydrocarbon groups and the hydroxy aromatic groups may be substituted by hydrocarbon, hydrocarbonoxy, halogenated hydrocarbon, halogenated hydrocarbonoxy, nitro or halo groups.  The disulphonyl chloride may have a formula similar to that of the dihydric phenol in which the -OH groups are replaced by -SO2Cl groups.  The diacid chloride of the dicarboxylic acid may have the formula ClCO-Z-COCl where Z is -(CR3R4)n11-,  -CR3, <FORM:0985131/C3/1> O-(CR3R4)n11-O-,  -Ar11-, -Ar11-Ar11,  -Ar11-X11-Ar11-, -(CR3R4)m11 -Ar11-(CR3R4)m11-, -(CR3R4)m11-O -Ar11-O-(CR3R4)m11-, <FORM:0985131/C3/2> -O-Ar11-O-, -O-Ar11-X11-Ar11-O-, -O-Ar11-Ar11-O-, -O-(CR3R4)m11 -O-Ar11-X11-Ar11 -(CR3R4)m11-O-, -O-(CR3R4)m11-O-Ar11-Ar11 -(CR3R4)m11 -O-, or -O-(CR3R4m11-Ar11 -(CR3R4(m11 -O- wherein Ar11 is an arylene radical (e.g. phenylene or naphthylene) which may be substituted by alkyl or halogen; R3 and R4 are hydrogen, allyl or aryl; X11 is -CO-, -O-, -S-, -SO-, -SO2- or -CZ1Z2- where Z1 and Z2 are hydrogen, alkyl or aryl or Z1 and Z2 together represent atoms which form with the carbon atom to which they are attached a cycloaliphatic ring; n11 is 1 to 20; m11 is 1 or 2 and <FORM:0985131/C3/3> represents a partially or fully hydrogenated aromatic nuclear in which the free bonds are in the 1,1-, 1,2- 1,3- or 1,4-position. In the example, in which the dihydric phenol is dissolved in aqueous sodium hydroxide solution and the organic solvent used is methylene chloride or 1, 1,2-trichloroethane, polyesters are made by reacting (1)-(2) and (31) Bisphenol-A and isophthaloyl chloride; (9) and (27) 1,1-bis-(4-hydroxyphenyl)-2,2,2-trichloroethane and isophthaloyl chloride; (10) and (28) 2,2 - bis - (4 - hydroxy - 3,5 - dichlorophenyl)-propane and 4,41-diphenyl ether dicarboxyl chloride; (11) and (29) bis-(4-hydroxy-3-methylphenyl) - methane and 4,41 - diphenyl ether dicarboxyl chloride;  (12) and (30) Bisphenol-A and 4,41-diphenyl ether dicarboxyl chloride;  (13) and (17)-(26) Bisphenol-A, terephthaloyl chloride and isophthaloyl chloride; (14) and (32) Bisphenol-A, isophthaloyl chloride and o-phthaloyl chloride; (15) and (33) Bisphenol-A and fumaroyl chloride; (16) and (34) Bisphenol-A and 4,41-dichlorosulphonyl diphenyl.  The polymers are useful for the manufacture of films and fibres.  Specifications 891,781, 901,605 and 916,660 are referred to.