US 5,308,884 AGranted

Stabilized polyether polyol and polyurethane foam obtained therefrom

AssigneeUniroyal Chemical Company, Inc.

InventorUyen T. Tran

Life of this patent

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Abstract

A liquid stabilizer composition for polyether polyols used in the production of flexible and semiflexible polyurethane foams contains a mixture of 4-alpha,alphadinethylbenzyl diphenylamine and 4,4'-bis-(alpha,alphadimethylbenzyl) diphenylamine.

Claims4

Dependent claims

A polyurethane foam obtained from a polyurethane foam-forming reaction mixture containing a liquid stabilizing composition comprising a mixture of 4-alpha,alpha-dimethylbenzyl diphenylamine and 4,41-bis-(alpha,alpha-dimethylbenzyl)diphenylamine.

Dependencies are inferred from the claim text.

Facts

Application: 08/123,622Filed 17 Sep 1993 · division
Priority: 26 Feb 1993
Granted: 3 May 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

C08G 18/28
With compounds having active hydrogen: characterised by the compounds used containing active hydrogen
C08K 5/18
Amines; Quaternary ammonium compounds: with aromatically bound amino groups
C08G
Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
C08K
Use of inorganic or non-macromolecular organic substances as compounding ingredients

Family

Serial023,325Parent of this division · filed 26 Feb 1993
US 5,269,961 AParent of this division
US 5,308,884 AThis patent

From the US filing history. Foreign family members aren’t listed.

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