GB1234144A - - Google Patents

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Publication number
GB1234144A
GB1234144A GB1234144DA GB1234144A GB 1234144 A GB1234144 A GB 1234144A GB 1234144D A GB1234144D A GB 1234144DA GB 1234144 A GB1234144 A GB 1234144A
Authority
GB
United Kingdom
Prior art keywords
polyarylamines
methylene bridged
heading
characterizing
formaldehyde
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 GB1234144A publication Critical patent/GB1234144A/en
Expired legal-status Critical Current

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

Abstract

1,234,144. Method of preparation of methylene bridged polyarylamines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 31 March, 1970 [15 April, 1969], No. 19158/69. Heading C2C. The invention relates to a process for the manufacture of methylene bridged polyarylamines by condensation of at least one primary aryl amine and formaldehyde characterizing that a heating or isomerization stage is carried out under pressure in an atmosphere of carbon dioxide in the presence of a neutral salt, e.g. a halide of an alkali or alkaline earth metal. Several examples are given.
GB1234144D 1969-04-15 1969-04-15 Expired GB1234144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1915869 1969-04-15

Publications (1)

Publication Number Publication Date
GB1234144A true GB1234144A (en) 1971-06-03

Family

ID=10124730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1234144D Expired GB1234144A (en) 1969-04-15 1969-04-15

Country Status (3)

Country Link
DE (1) DE2018053A1 (en)
GB (1) GB1234144A (en)
NL (1) NL7005176A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039581A (en) * 1975-06-27 1977-08-02 The Upjohn Company Process for the preparation of di(amino phenyl)methanes

Also Published As

Publication number Publication date
DE2018053A1 (en) 1970-10-22
NL7005176A (en) 1970-10-19

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Legal Events

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