Stock material or miscellaneous articles – Composite – Of fluorinated addition polymer from unsaturated monomers
Patent
1986-02-25
1987-04-28
Page, Thurman K.
Stock material or miscellaneous articles
Composite
Of fluorinated addition polymer from unsaturated monomers
4273855, 4273881, 4273897, 4273936, 4274301, 427435, 4274432, 502 4, 502109, B32B 2700, B05D 302, B05D 722
Patent
active
046614117
ABSTRACT:
This invention discloses improved heterogeneous acid catalysts and a method for preparing these catalysts. A heterogeneous acid catalyst has been prepared by treating a carrier material with a solution containing a fluorocarbonsulfonic acid polymer dissolved in a suitable solvent, removing the solvent, and heat treating the coated carrier in such a way so as to prevent the polymer from being leached off the carrier. The final heat treatment of the composition to prevent the polymer from redissolving comprises an improvement in the preparation of a heterogeneous catalyst.
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Ezzell Bobby R.
Martin Charles W.
Weaver John D.
Page Thurman K.
The Dow Chemical Company
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