Block copolyethers via oxonium coupling of poly(tetramethylene e

Details Block copolyethers via oxonium coupling of poly(tetramethylene e Block copolyethers via oxonium coupling of poly(tetramethylene e

1992-10-26

1994-02-08

Mars, Howard T.

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

Organic compounds

Oxygen containing

568608, 525410, 549429, C07C 4109

Patent

active

052849805

ABSTRACT:
Treatment of poly(tetramethylene ether) glycols with acid catalysts at elevated temperatures leads to a chain coupling with rapid increase in molecular weight. Various alcohols including diols and triols can be incorporated into poly(tetramethylene ether) glycol backbone with modified properties and performance.

REFERENCES:
patent: 3928483 (1975-01-01), Chang et al.

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