Tetracarboxylic acids

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Patent

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Details

Other Related Categories

562509, 562590, C07C 51353, C07C 5702

Type

Patent

Status

active

Patent number

050012606

Description

ABSTRACT:
A process for polymerizing unsaturated dicarboxylic acids comprises heating the acids in the presence of a catalytic proportion of an unactivated clay and water. The product dimer is distilled to separate unreacted monomer acids. The product dimers of 36, 40 and 44 content are useful as corrosion inhibitors, epoxy resin curing agents, lubricants and intermediates for synthetic polymeric resins and polymeric resin plasticizers.

REFERENCES:
patent: 2793219 (1957-05-01), Barrett et al.
patent: 2793220 (1957-05-01), Barrett et al.
patent: 3873585 (1975-03-01), Sturwold et al.

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