Low monol polyoxy (higher) alkylene polyols with primary hydroxy

Details Low monol polyoxy (higher) alkylene polyols with primary hydroxy Low monol polyoxy (higher) alkylene polyols with primary hydroxy

1997-06-19

1998-06-09

Barts, Samuel

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

Organic compounds

Carboxylic acid esters

560199, 560122, 560127, 560 89, 560 91, 554 37, 554121, 554163, 554168, C07C 6934

Patent

active

057636427

ABSTRACT:
Esterification of an ultra-low unsaturation polyoxy(higher)alkylene polyol with a dicarboxylic acid or reactive derivative thereof to form a poly(half ester) followed by capping the poly(half ester) with a capping agent capable of forming an amide linkage or ester linkage while retaining primary hydroxyl functionality, generates high primary hydroxyl content polyols with substantially retained hydrophile/lipophile balance and low polydispersity. Low color products having primary hydroxyl contents in excess of 80 equivalent percent may be routinely achieved.

REFERENCES:
patent: 4440705 (1984-04-01), Nissen et al.
patent: 5470813 (1995-11-01), Le-Khac
patent: 5482908 (1996-01-01), Le-Khac

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