Phosphate salts of monomers for PBZ and their use in preparing P

Details Phosphate salts of monomers for PBZ and their use in preparing P Phosphate salts of monomers for PBZ and their use in preparing P

1989-04-21

1992-08-11

Kight, III, John

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528179, 528183, 528184, 528207, 528208, 528210, 528211, 528286, 528289, 528290, 528291, 528336, 528337, 528339, 528341, 528377, 558169, 568 8, C08G 7306, C08G 7322, C08G 6928

Patent

active

051380200

ABSTRACT:
PBZ polymers are synthesized by the reaction of AA- and BB-monomers. The BB-monomer is conveniently synthesized and isolated as a phosphate salt having a uniform number of phosphate ions associated with each BB-monomer ion. Such high purity monophosphate and diphosphate salts can be obtained by precipitating the monomer from an aqueous acid solution by adjusting the pH balance or from a mixture of phosphoric acid and a volatile, polar, saturated organic liquid at a relatively low temperature.

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