Process for the purifying of polytetramethylene ether glycol or

Details Process for the purifying of polytetramethylene ether glycol or Process for the purifying of polytetramethylene ether glycol or

1982-03-11

1984-10-30

Mars, Howard T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

568617, 568621, 560240, 260456R, C07C 6748, C07C 4134, C07C 4144

Patent

active

044801246

ABSTRACT:
The subject invention relates to a process for purifying polytetramethylene ether glycol or the corresponding diester prepared by cationic polymerization of tetrahydrofuran comprising treating said glycol or diester with hydrogen in the presence of a hydrogen catalyst. The resulting products have a low color number.

REFERENCES:
Emmett, Catalysis, Reinhold Publishing Corp., New York, vol. 5, p. 455.

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