Carbonless copying papers

Textiles: manufacturing

Patent

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Details

252316, 427150, 427151, 428307, 428476, 428914, B41M 522

Patent

active

041205189

ABSTRACT:
Carbonless copying papers of which the donor layer contains microcapsules of a solution of dyestuff precursors in organic solvents as core material and polycarbodiimides as shell material.

REFERENCES:
patent: 3450562 (1969-06-01), Hoeschele
patent: 4000087 (1976-12-01), Maalouf
patent: 4021595 (1977-05-01), Kiritani et al.

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