Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1985-10-29
1988-01-05
Anderson, Philip
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
264144, 264239, 264257, 26433111, 4284735, 524606, 528331, 528348, B32B 2712, B29B 904, B29C 3914, B29C 4300
Patent
active
047176199
ABSTRACT:
Disclosed herein is a process for the production of shaped polybenzimidazole articles which comprises forming a solvent solution of the polymer, depositing the solution on a support to form a film, removing sufficient solvent from the deposited film such that the film contains from about 10 to about 30 percent by weight of said solvent and compression molding the resulting product into a shaped article. Thus, this invention provides a unique process for the forming of molded shaped articles from polybenzimidazole based polymers.
REFERENCES:
patent: Re26065 (1966-02-01), Marvel et al.
patent: 2895948 (1959-07-01), Brinker et al.
patent: 3933937 (1976-01-01), Rhodes, Jr. et al.
Anderson Philip
Hoechst Celanese Corporation
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