Transparentized paper sheet

Details Transparentized paper sheet Transparentized paper sheet

1984-07-13

1986-02-11

Ives, Patrick C.

Stock material or miscellaneous articles

Composite

Of polyester

428337, 428264, 428482, 428513, 428514, 428522, 4285375, 428918, 428274, 1621681, 1621687, 430181, B32B 2710, B32B 2310

Patent

active

045698880

ABSTRACT:
A transparentized paper with a caliper of between 0.001 and 0.015 inch and the process for its preparation is disclosed. A paper web is treated with a liquid mixture of polyesters, acid monoesters of polyols and dicarboxylic acids in non aqueous polaric solvents having admixed therein methylol derivatives of polyamino compounds, with or without a catalyst. The impregnated paper is cured by an in-situ cross-linking reaction immobilizing the impregnated material. A transparentized paper results which is resistant to water, most organic solvents and heat and is useful as tracing material as well as a translucent base for sensitizing with reprographic coatings. The transparentized paper is not resistant to alkali and can be repulped in alkaline medium for recycling. The transparentized paper also exhibits antistatic properties.

REFERENCES:
patent: 3684551 (1972-08-01), Seiner
patent: 4128437 (1978-12-01), Ura et al.
patent: 4416950 (1983-11-01), Muller et al.

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