Stabilized copolymers based on ethylene and...

Details Stabilized copolymers based on ethylene and... Stabilized copolymers based on ethylene and...

C - Chemistry, Metallurgy

08

L

400/9349

C08L 27/18 (2006.01) C08K 3/32 (2006.01) H01B 3/44 (2006.01)

Patent

CA 1127789

Abstract: Mixtures of a) copolymers of ethylene and tetra- fluoroethylene, which in addition optionally contain up to 10 mole % of units of at least one ethylenically mono- unsaturated monomer copolymerizable with tetrafluoroethylene, with b) phosphorus acids which in one of their tautomeric forms contain 2 or 3 oxygen atoms and 1 or 2 hydrogen atoms directly bonded to each phosphorus atom, or with salts of such acids, are described. These mixtures possess improved heat stability and can, where appropriate with interpolation of a melt granulation process, be used, in particular, for the coating of metals. Component b) is added to the copolymer a) in the dry form or preferably in the form of a solution during working up, and in particular is added either to the pulverulent copolymer or, more especi- ally, to a moist product, isolated from dispersions, after the last washing process.

320143

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