EP 0037370 B1 19860910 - SUPPORTLESS CARBON RECORDING MATERIAL
Title (en)
SUPPORTLESS CARBON RECORDING MATERIAL
Publication
Application
Priority
DE 3010859 A 19800321
Abstract (en)
[origin: EP0037370A2] 1. A carrier-less carbon recording material including a dye-coat - the dye particles of which are dispersed in a coat of a synthetic-resin bonding agent - and a synthetic-resin top coat which covers the rear of the dye-coat, is applied thereto as a solution and is subsequently physically dried, in which the top coat is based on a solvent-soluble non-reactive polyurethane resin comprising additives, characterised in that the top coat is modified by adding thereto, while still in its state of solution, a small quantity of a polyisocyanate derived from isocyanuric acid by replacing the three H atoms of the latter by hydrocarbon radicals which in turn carry free NCO groups and which react with reactive OH groups to form a high-strength polyurethane resin which is three-dimensionally interlaced.
IPC 1-7
IPC 8 full level
B41M 5/10 (2006.01)
CPC (source: EP)
B41M 5/10 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0037370 A2 19811007; EP 0037370 A3 19820113; EP 0037370 B1 19860910; AT E22042 T1 19860915; DE 3010859 A1 19811001; DE 3175286 D1 19861016; DK 131581 A 19810922
DOCDB simple family (application)
EP 81730040 A 19810321; AT 81730040 T 19810321; DE 3010859 A 19800321; DE 3175286 T 19810321; DK 131581 A 19810323