Process for making polarized material

Details Process for making polarized material Process for making polarized material

1987-06-25

1989-09-05

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

29 2535, 264 24, 264104, 264204, 264235, 310800, 4251748E, 4251748R, B29C 7104

Patent

active

048636487

ABSTRACT:
This invention relates to a process for making polarized material by forming a solution of a material capable of being polarized with a polarization solvent which can be removed by evaporation. The material in solution is poled to provide a polarized material which is free or substantially free of mechanically-induced orientation and which polarization is essentially stable up to the crystal melting point of the polar crystals or to softening point of the polarized material if non-crystalline. The polarization solvent can be removed from the solution as desired either to a reduced level or completely, such as during poling or before or after poling.

REFERENCES:
patent: 4308370 (1981-12-01), Fukada et al.
patent: 4346505 (1982-08-01), Lemonon et al.
patent: 4349502 (1982-09-01), Pae et al.
patent: 4390674 (1983-06-01), Ward et al.
patent: 4393093 (1983-07-01), Sprout, Jr.
patent: 4486683 (1984-12-01), Newman et al.
patent: 4591465 (1986-05-01), Miyata et al.
patent: 4615848 (1986-10-01), Krueger et al.

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