Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1993-02-05
1995-01-24
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
528129, 528168, 528169, 528185, 528191, 528199, 528240, 528416, 521 50, 521 62, 521 65, C08J 928
Patent
active
053843371
ABSTRACT:
A poromeric material for maintaining an electrostatic charge is provided, the material including a matrix of fibers, a polymeric binder for binding the matrix, and electrets present substantially uniformly throughout the poromeric material. Also provided are methods for making the poromeric material. In one embodiment, a polymeric binder mixture having electrets substantially uniformly contained therein is formed. The matrix of fibers is impregnated with the mixture and cured, whereby the electrets are substantially uniformly distributed throughout the matrix to produce the electrostatic poromeric material. In an alternative embodiment, the electrets are contained in the fibers of the matrix. The poromeric material may be used to encase a core to form a roller, for example, a hickey-removing roller.
REFERENCES:
patent: 3067483 (1962-12-01), Hollowell
patent: 3594255 (1971-07-01), Budinger
patent: 3635158 (1972-01-01), Budinger
patent: 4198739 (1980-04-01), Budinger et al.
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