Solventless electrical insulation resins

Details Solventless electrical insulation resins Solventless electrical insulation resins

1974-12-20

1978-03-28

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

428379, C08G 6368, C08G 6320

Patent

active

040814270

ABSTRACT:
This invention relates to a process of reformulating a solvent polyester-type resin, such as employed in electrical insulation, for example in wire enamels, to a solventless polyester-type wire resin of similar properties which is characterized by increasing the relative hydroxy-functionality of said polyester-type resin as compared to the hydroxy-functionality of a corresponding solvent-type wire resin.
In the preferred embodiment the increased hydroxy-functionality, in whole or in part, is derived from the use of, or the increased content, of tris(2-hydroxyethyl) isocyanurate. The polyester-type wire enamels include polyesters and polyesters containing other groups such as polyester-amides, polyester-imides, polyester-amide-imides, etc. By doing this, resins having the desired properties as well as viscosities suitable for wire insulation can be made and applied in solventless systems.

REFERENCES:
patent: 3211585 (1965-10-01), Meyer et al.
patent: 3272785 (1966-09-01), Lewis et al.
patent: 3310512 (1967-03-01), Curtice
patent: 3426098 (1969-02-01), Meyer et al.
patent: 3553215 (1971-01-01), Zalewski et al.
patent: 3632837 (1972-01-01), Koyler et al.
patent: 3652501 (1972-03-01), Albers et al.
patent: 3668277 (1972-06-01), Riemhofer et al.
patent: 3763269 (1973-10-01), Formaini
patent: 3882188 (1975-05-01), Behmel
patent: 3931418 (1976-01-01), Risten

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