Hydroxy ethyl bibenzoate
AssigneeMonsanto Company
InventorsJawed Asrar, David J. Weinkauff, A. Hameed Bhombal
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Abstract
New compounds including bis-.beta.-hydroxy ethyl bibenzoate containing less than 2.5%, and preferably less than 1%, diethylene glycol and a process for the production of the bis-.beta.-hydroxy ethyl bibenzoate by the condensation of 4,4'-biphenyl dicarboxylic acid and ethylene glycol at low temperature and pressure in the presence of a catalyst are disclosed. Use of the compounds to produce polyesters is also disclosed.
Claims12
A process for the production of a bis hydroxy alkyl carboxylate containing less than 1% by weight oxyalkyl glycol comprising condensing a mixture of an aromatic dicarboxylic acid selected from the group consisting of 4,4'-biphenyl dicarboxylic acid, 3,4'-biphenyl dicarboxylic acid, diphenyl ether dicarboxylic acid, stilbene dicarboxylic acid, and triphenyl dicarboxylic acid and a diol having a carbon chain having from 2 to 8 carbon atoms at a temperature between about 150.degree. C. and about 200.degree. C. and at atmospheric pressure in the presence of a catalyst selected from the group of catalysts based upon titanium, tin and iodine.
A process for the production of bis-.beta.-hydroxy ethyl bibenzoate containing less than 1% by weight diethylene glycol comprising condensing a mixture of 4,4'-biphenyl dicarboxylic acid and ethylene glycol at a temperature between 150.degree. C. and 197.degree. C. and at about atmospheric pressure in the presence of a catalyst selected from the group consisting of catalysts based upon titanium, tin and iodine.
A process for the production of bis hydroxy butyl bibenzoate comprising condensing a mixture of 4,4'-biphenyl dicarboxylic acid and butylene glycol at a temperature between 150.degree. C. and 250.degree. C. and at about atmospheric pressure in the presence of a catalyst selected from the group consisting of catalysts based upon titanium, tin and iodine.
Dependencies are inferred from the claim text.