EP 0799711 A1 19971008 - Paper coating agent
Title (en)
Paper coating agent
Title (de)
Papierbeschichtungsmittel
Title (fr)
Agent pour le couchage du papier
Publication
Application
Priority
EP 96105285 A 19960402
Abstract (en)
Disclosed herein is a paper coating agent which comprises a modified polyvinyl alcohol (A) containing 3 to 15 mol% of ethylene units and an alkali metal ion (B), with the ratio of component (A) to component (B) being 100:0.003 to 100:1 in parts by weight. Disclosed also herein is a heat-sensitive recording material which comprises a coating layer on a substrate, said coating layer comprising a modified polyvinyl alcohol containing 3 to 15 mol% of ethylene units. The paper coating agent of the present invention has such excellent solubility in boiling water that there is not a problem of insoluble matter in an aqueous solution of the coating agent. When applied for a paper surface coating agent, it gives coated paper without discoloration, superior, in surface strength, air barrier properties, and printability. When applied for a paper pigmented coating agent, it gives coated paper without discoloration, superior in water resistance and printability. The heat-sensitive recording material of the present invention is superior in color developing sensitivity, water resistance, oil resistance, plasticizer resistance, and PVC film resistance. Furthermore it is superior in high-speed printability and image resolution, and it can be used in the field, such as facsimile, where high-speed printing is required.
IPC 1-7
IPC 8 full level
B41M 5/337 (2006.01); B41M 5/52 (2006.01); D21H 19/20 (2006.01); D21H 19/60 (2006.01)
CPC (source: EP)
B41M 5/3372 (2013.01); B41M 5/5254 (2013.01); D21H 19/20 (2013.01); D21H 19/60 (2013.01); B41M 2205/04 (2013.01)
Citation (search report)
- [A] EP 0692494 A1 19960117 - KURARAY CO [JP]
- [AD] DATABASE WPI Section Ch Week 9414, Derwent World Patents Index; Class A14, AN 94-114929, XP002011229
- [AD] DATABASE WPI Section Ch Week 8825, Derwent World Patents Index; Class A82, AN 88-173198, XP002011230
- [AD] DATABASE WPI Section Ch Week 8821, Derwent World Patents Index; Class A82, AN 88-143774, XP002011231
- [A] DATABASE WPI Section Ch Week 8912, Derwent World Patents Index; Class A89, AN 89-088802, XP002011232
Designated contracting state (EPC)
DE FI FR GB SE
DOCDB simple family (publication)
EP 0799711 A1 19971008; EP 0799711 B1 19990728; DE 69603450 D1 19990902; DE 69603450 T2 20000330
DOCDB simple family (application)
EP 96105285 A 19960402; DE 69603450 T 19960402