Liquid mixtures based on ethylene polymers, a process for producing them and a coating or bonding process in which they are used

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United States of America Patent

PATENT NO 4875964
SERIAL NO

06942384

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Abstract

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The liquid mixtures according to the invention comprise at least one ethylene polymer (A) and at least one solvent (B), and are characterized in that: (a) the ethylene polymer (A) comprises at least one terpolymer having a fluidity index comprised between 2 and 500 dg/min and comprising: from 83 to 95.7 moles % of units derived from ethylene, from 4 to 15 moles % of units derived from at least one alkyl acrylate or methacrylate, the alkyl group having from 1 to 6 atoms of carbon, and from 0.3 to 2 moles % of units derived from maleic anhydride, (b) the solvent (B) is selected from amongst aliphatic, cycloaliphatic and aromatic hydrocarbons having from 5 to 12 atoms of carbon, dechlorinated solvents and esters. The process comprises in a first step the dissolution of polymer (A), by stirring, in the solvent (B) at a temperature T (expressed in Celcius degrees) such that: 35.ltoreq.T.ltoreq..theta., .theta. being the boiling temperature of the solvent (B). Application to the coating of a support or to the bonding of two substrates by steeping in or spraying of a liquid mixture comprising a solvent and, optionally, evaporation of said solvent.

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Patent Owner(s)

Patent OwnerAddress
SOCIETE CHIMIQUE DES CHARBONNAGES S ATOUR AUROE-PLACE DES REFLETS F-92080 PARIS LEDEFENSE-CEDEX 5

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Marius, Hert Aubigny En Artois, FR 2 2

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