Mixture containing an organometallic compound of alkali metal an

Details Mixture containing an organometallic compound of alkali metal an Mixture containing an organometallic compound of alkali metal an

1975-12-19

1978-01-24

Wong, Jr., Harry

Coating processes

Miscellaneous

156 60, 260 304R, 260 304EP, 427322, C09J 502

Patent

active

040705129

ABSTRACT:
The invention relates to a mixture for activation of polytetrafluoroethylene and other fluoroplastics for bonding by means of adhesives. The mixture contains an organometallic compound of an alkali metal stabilized against effects of atmospheric oxygen and humidity and is particularly suitable for the surface activation in a lot or continuous production or for spaceous articles, where the simple use without protective atmosphere is advantageous. It consists of 1-60 wt. % of an organic polymer (mol. wt. above 4000) obtained by polymerization of ethylene, C.sub.1 -C.sub.3 alkyl, phenyl, or C.sub.1 -C.sub.10 alkoxy substituted theylene, ethylene oxide or propylene oxide or a mixture of these polymers, 1 mol of Li, Na or K metal, 0.4-2 mol of a hydrocarbon containing 2-4 bonded, condensed or aneled aromatic nuclei, 500-5000 ml of a solvent from a group comprising aliphatic and cycloaliphatic ethers or polyethers, and, if it is required, up to 50 vol. % of an aromatic, aliphatic or cycloaliphatic hydrocarbon and/or up to 1 mol of the crown ether of the general formula ##STR1## where m + n = 2 to 10. The surfaces treated with this mixture give virtually the same strength of bonding as after treatment with known organometallic agents, but under much more convenient condition of handling and application.

REFERENCES:
patent: 3440088 (1969-04-01), Yamada et al.

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