Surface modification of polycyclic cycloolefin polymers

Details Surface modification of polycyclic cycloolefin polymers Surface modification of polycyclic cycloolefin polymers

1989-04-20

1990-04-17

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253371, 525351, 525355, 525356, 525358, 5253591, 4272481, 428521, C08F 822

Patent

active

049181467

ABSTRACT:
It has been found that the properties of polycyclic cycloolefins, in particular poly(dicyclopentadiene), can be substantially improved by halogenation of the surface. Both aqueous and gaseous treatments of the polymer have been found to significantly improve the resistance to various acids and solvents. Chlorine, fluorine and bromine, in particular, when incorporated into the surface of the polymer increase chemical resistance, improve retention of properties upon aging, reduce emission of residual monomer, and encourage better adhesion of paint.
Among the substances found to provide the desired chemical resistance on the polymer surface were dry chlorine gas, aqueous chlorine, immersion in liquid bromine, aqueous bromine, and fluorine gas. Similar improvement in chemical resistance can be obtained through treatment with pseudohalogen compounds or interhalogen compounds.

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