Cellulosic materials rendered transparent
AssigneeArjomari-Prioux
InventorsMichel Vernois, Jean-Paul Duboeuf
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Abstract
The invention relates to cellulosic supports rendered wholly or partly transparent by a process of impregnation. One of the characteristics of the impregnation compositions proposed is its aptitude to migrate very rapidly to the heart of the cellulosic supports. The invention is applicable to drawing, reproduction, windows for envelopes, lampshades, creation of watermarks by a photogravure process.
Claims13
A transparentized paper comprising a cellulosic support containing cellulosic materials impregnated with a transparentizing amount of a transparentizing composition containing a ketone-aldehyde transparentization resin;
- a thermal cross-linking aminoplast or modified or modified alkyd resin;
- a solvent system, a plasticizer and wherein at least part of the solvent system is retained in the transparentized paper after the aminoplast or modified alkyd resin has been heat cross-linked.
Dependencies are inferred from the claim text.