EP0076490A1
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EP
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Paper coating agent
Assignee: Kuraray Co Ltd
•
Filing: 1982-10-01
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Granted: —
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Expires: 2002-10-01
Abstract
Abstract A paper coating agent which comprises modified polyvinyl alcohol containing silicon in the molecule is described.
Inventors
- 👤 Hitoshi Maruyama
- 👤 Koichi Kajitani
- 👤 Makoto Shiraishi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 22:46
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/26; B41M5/40; B41M5/42; B41M5/44; B41M5/443; B41N; B41N1/00; B41N1/12; B41N1/14; C; C08; C08F; C08F8/00; C08F8/12; C08J; C08J5/00; C08J5/18; D; D21; D21H; D21H19/00; D21H19/10; D21H19/12; B41M5/5254; B41M5/529; C08F218/00; C08F218/02; C08F218/04; C08F218/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
15 words
A paper coating agent which comprises a modified polyvinyl alcohol containing silicon in the molecule.
Claim 2
Dependent Claim
15 words
A paper coating agent which comprises a modified polyvinyl alcohol containing silicon in the molecule.
Claim 3
Dependent Claim
41 words
A paper coating agent as set forth in Claim 1, wherein the modified polyvinyl alcohol containing silicon in the molecule is a saponification product of a copolymer of a vinyl ester and an olefinic unsaturated monomer containing silicon in the molecule.
Claim 4
Dependent Claim
51 words
A paper coating agent as set forth in Claim 2, wherein the olefinic unsaturated monomer containing silicon in the molecule is represented by the formula (I) below. (where n is 0 to 4, m is 0 to 2, R 1 is a non-hydrolyzable group, and R 2 is a hydrolyzable group.)
Claim 5
Dependent Claim
56 words
A paper coating agent as set forth in Claim 3, wherein R 1 in the formula (I) is a lower alkyl group, aryl group, or lower alkyl group having an aryl group, and R 2 in the formula (I) is an alkoxyl group or acyloxyl group which may have a substituent group containing oxygen or nitrogen.
Claim 6
Dependent Claim
87 words
A paper coating agent as set forth in Claim 3, wherein R 1 in the formula (I) is a lower alkyl group of 1 to 5 carbon atoms, an aryl group of 6 to 18 carbon atoms, or a lower alkyl group of 1 to 5 carbon atoms having an aryl group of 6 to 18 carbon atoms; and R 2 in the formula(I) is an alkoxyl group or acyloxyl group of 1 to 40 carbon atoms which may have a substituent group containing oxygen or nitrogen.
Claim 7
Dependent Claim
42 words
A paper coating agent as set forth in Claim 3, wherein m and n in the formula (I) are 0 and 0 to 4, respectively, and R 2 in the formula (I) is an alkoxyl group having 1 to 40 carbon atoms.
Claim 8
Dependent Claim
37 words
A paper coating agent as set forth in Claim 3, wherein both m and n in the formula (I)are 0, and R 2 in the formula (I) is an alkoxyl group having 1 to 18 carbon atoms.
Claim 9
Dependent Claim
41 words
A paper coating agent as set forth in Claim 3, wherein m and n in the formula (I)are 0 and 0 to 4, respectively, and R 2 in the formula (I) is an acyloxyl group having 2 to 18 carbon atoms.
Claim 10
Dependent Claim
103 words
A paper coating agent as set forth in Claim 2, wherein the olefinic unsaturated monomer containing silicon in the molecule is represented by the formula (II) below. (where m is 0 to 2, R 1 is a non-hydrolyzable group, R 2 is a hydrolyzable group, R 3 is a hydrogen atom or methyl group, R 4 is a hydrogen atom or lower alkyl group of 1 to 5 carbon atoms, and R 5 is an alkylene group of 1 to 5 carbon atoms or an organic divalent residue in which the chain carbon atoms are connected through an oxygen atom or nitrogen atom).
Claim 11
Dependent Claim
56 words
A paper coating agent as set forth in Claim 9, wherein R 1 in the formula (II) is a lower alkyl group, aryl group, or lower alkyl group having an aryl group, and R 2 in the formula (II) is an alkoxyl group or acyloxyl group which may have a substituent group containing oxygen or nitrogen.
Claim 12
Dependent Claim
87 words
A paper coating agent as set forth in Claim 9, wherein R 1 in the formula (II) is a lower alkyl group of 1 to 5 carbon atoms, an aryl group of 6 to 18 carbon atoms, or a lower alkyl group of 1 to 5 carbon atoms having an aryl group of 6 to 18 carbon atoms; and R 2 in the formula(II) is an alkoxyl group or acyloxyl group of 1 to 40 carbon atoms which may have a substituent group containing oxygen or nitrogen.
Claim 13
Dependent Claim
73 words
A paper coating agent as set forth in Claim 9, wherein m is 0, R 1 is an alkyl group of 1 to 5 carbon atoms, R 2 is an alkoxyl group of 1 to 40 carbon atoms, R 3 is a hydrogen atom or methyl group, R 4 is a hydrogen atom or methyl group, and R 5 is an alkylene group of 1 to 5 carbon atoms with or without branching.
Claim 14
Dependent Claim
27 words
A paper coating agent as set forth in Claim 1, wherein the modified polyvinyl alcohol contains the silicon-containing monomer in an amount of 0.01 to 10 mol%.
Claim 15
Dependent Claim
27 words
A paper coating agent as set forth in Claim 1, wherein the modified polyvinyl alcohol contains the silicon-containing monomer in an amout of 0.1 to 3 mol%.
Claim 16
Dependent Claim
34 words
A paper coating agent as set forth in Claim 1, wherein the modified polyvinyl alcohol has a degree of polymerization of 100 to 3000 and a degree of saponification of 70 to 100 mol%.
Claim 17
Dependent Claim
15 words
A paper coating agent which comprises an alkaline aqueous solution of silicon-containing modified polyvinyl alcohol.
Claim 18
Dependent Claim
15 words
A paper coating agent which comprises an alkaline aqueous solution of silicon-containing modified polyvinyl alcohol.
Claim 19
Dependent Claim
33 words
The use of a modified polyvinyl alcohol containing silicon in the molecule as defined in Claims 1 and 2 for the preparation of coated papers, offset printing plates, converting paper or thermosensitive paper.
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