Patent EP-1114734-A1 (EP)
Inventor: SUMITA KATSUHIKO
IPC: B41M5/52
Filed: 2000-06-02
Abstract: The present invention Nos. I-VII are a resin composition for
an ink-jet recording sheet for constructing an image-receiving
layer which is formed on at least one surface of a base material for
an ink-jet recording sheet. 
     The present invention No. I relates to a resin composition for
an ink-jet recording sheet which comprises (1) 2-80% by mass of a
cationic acrylic copolymer (A) having a crosslinkable group, (2)
5-80% by mass of a saponified product (B) of a vinyl acetate-based
copolymer having a polymerization degree of 200-1000, and (3) 0-80%
by mass of a modifier (R), 
the present invention No. II relates to a resin composition for an
ink-jet recording sheet which contains (1) 2-80 wt% of a cationic
acrylic copolymer (A) having a crosslinkable group, (2) 5-80 wt% of
a saponified product (B) of a vinyl acetate-based copolymer, (3)
(n 1 -80) wt% of a water-based polyurethane resin (C), (4) (n 2 -60) wt%
of a polyurethane-based graft polymer mixture (D), and (5) (n 3 -60)
wt% of a polyester-based graft polymer mixture (E) in a solid
content-based ratio, and total is 100 wt%, in which there are
satisfied conditions that a minimum value in n 1 , n 2 , and n 3  is 0, and
(n 1 +n 2 +n 3 ) is ≥5, 
the present invention No. III relates to a resin composition for an
ink-jet recording sheet which comprises, [1] 2-80% by weight of a 
cationic acrylic copolymer (A) having a crosslinkable group,
   [2] 5-60% by weight of a saponified product (B) of a vinyl acetate-based
copolymer, and   [3] 0-80% by weight of a water-based polyurethane resin (C) {total
of the (A), (B), and (C) is 100% by weight}, and   [4] 0.05-10 parts by weight of a block isocyanate compound (F)
based on 100 parts by weight of the saponified product (B) of a
vinyl acetate-based copolymer,  
the present invention No. IV relates to a resin composition for an
ink-jet recording sheet which comprises the use of 2-100% by weight
of a cationic acrylic copolymer (A) composed of a monomer having an
alkylene oxide group, a monomer having a hydrophilic group, a
monomer having a crosslinkable group, a monomer containing cationic
group, 0-90% by weight of a saponified product (B) of a vinyl
acetate-based copolymer, and 5-60% by weight of a modifier (R), and
an image-receiving layer is formed over at least one surface, 
the present invention No. V relates to a resin composition for an
ink-jet recording sheet which comprises formulating 70-100% by
weight of a cationic (meth)acrylic polymer (A) in which there are
copolymerized a cationic (meth)acrylate monomer having a
polyalkylene oxide group, a monomer having a hydrophilic group, a
monomer having a crosslinkable group, a monomer containing cationic
group, and a cationic monomer, 0-30% by weight of a saponified 
product (B) of a vinyl acetate-based copolymer (total thereof is
100% by weight), and 0-15 parts by weight of a modifier (R) based
on 100 parts by weight of the (A) and the (B), 
the present invention No. VI relates to an ink-jet recording sheet
which comprises being constructed by a composition containing a
(meth)acrylic-based copolymer having a hydrolyzable silyl group in
which a polymerizable unsaturated monomer having a hydrolyzable
silyl group is copolymerized with monomers containing a
(meth)acrylate-based polymerizable unsaturated monomer, and
inorganic compound fine particles, 
the present invention No. VII relates to a resin composition for an
ink-jet recording sheet characterized by containing 100 parts by
weight of a resin composition composed of (1) 1-30% by weight of a
cellulose derivative (A) and (2) 70-99% by weight of a good solvent
(B) for the cellulose derivative (total is 100% by weight), (3)
0.1-20 parts by weight of an organic acid (C) which can dissolve in
the good solvent (B) or a weak solvent (D) for the cellulose
derivative, and optionally, (4) 0-150 parts by weight of a weak
solvent (D) for the cellulose derivative, and relates to a
recording sheet in which an image-receiving layer is formed on a
body to be recorded composed of the resin composition. 
the present invention No. VIII is to provide a heat transfer sheet
which is excellent in an ink-absorbing ability, an ink-fixing 
ability, and a printing ability in the case of molding into the heat
transfer sheet, and which is high in a water resistance,
durability, particularly, micro cracks resistance of a recorded
picture, and in which an ink-receiving layer is formed on an
elastic material, and micro cracks are not caused even though the
recorded picture is expanded and shrunk, and a resin composition
for constructing thereof, a resin composition containing a polymer
(A) containing a monomer unit shown by a specified formula (1) and
a hot-melt adhesive resin (B), a heat transfer sheet comprised the
resin composition, and a method for the preparation thereof.