GB1288937A - - Google Patents

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Publication number
GB1288937A
GB1288937A GB1288937DA GB1288937A GB 1288937 A GB1288937 A GB 1288937A GB 1288937D A GB1288937D A GB 1288937DA GB 1288937 A GB1288937 A GB 1288937A
Authority
GB
United Kingdom
Prior art keywords
methylene bridged
polyaryl amines
polyaryl
amines
triehloroacetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1288937A publication Critical patent/GB1288937A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1288937 Methylene bridged polyaryl amines IMPERIAL CHEMICAL INDUSTRIES Ltd 5 May 1970 [9 June 1969] 29092/69 Heading C2C Methylene bridged polyaryl amines are prepared by condensing a primary arylamine and formaldehyde at elevated temperature in the presence of a strong organic carboxylic acid of pKa value less than 1À5 such as oxalic, trifluoroacetic, triehloroacetic, dichloroacetic, difluoroacetic and heptafluorbutyric acids. A neutral metallic salt, e.g. a halide of an alkali or alkaline earth metal may also be present and the reactants may be heated at a pressure above atmospheric and the process carried out in a continuous manner. Reference has been directed by the Comptroller to Specification 1,177,557
GB1288937D 1969-06-09 1969-06-09 Expired GB1288937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2909269 1969-06-09

Publications (1)

Publication Number Publication Date
GB1288937A true GB1288937A (en) 1972-09-13

Family

ID=10286015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1288937D Expired GB1288937A (en) 1969-06-09 1969-06-09

Country Status (3)

Country Link
DE (1) DE2027057A1 (en)
GB (1) GB1288937A (en)
NL (1) NL7008365A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6031136A (en) * 1993-07-21 2000-02-29 Bayer Corporation Process for preparing methylene diphenylamines by partial neutralization of acidic methylene diphenylamines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6031136A (en) * 1993-07-21 2000-02-29 Bayer Corporation Process for preparing methylene diphenylamines by partial neutralization of acidic methylene diphenylamines

Also Published As

Publication number Publication date
DE2027057A1 (en) 1970-12-17
NL7008365A (en) 1970-12-11

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees