Patent US5364585A successfully refreshed from Google Patents.
Patent EP0204575A2 successfully refreshed from Google Patents.
EP0204575A2
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Ultraviolet curable ink compositions
Assignee: Mitsubishi Chemical Corp
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Filing: 1986-06-05
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Granted: —
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Expires: 2006-06-05
Abstract
Abstract An ultraviolet curable ink composition comprising, as main components, (A) a polyurethane poly(meth)acrylate obtained by reacting a polyisocyanate compound of the formula: wherein R, is a hydrogen atom or a methyl group, and n is an integer of from 1 to 20, with a hydroxyl group-containing (meth)acrylate, and having, in one molecule, at least two (meth)acryloyl groups and at least two urethane bonds, (B) a radical polymerizable low molecular weight compound, and (C) a photopolymerization initiator.
Inventors
- 👤 Hideo Nakamoto
- 👤 Fumito Aosai
- 👤 Hiroshi Fukushima
- 👤 Eriko Suda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 03:06
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/101; C08; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
An ultraviolet curable ink composition comprising, as main components, (A) a polyurethane poly (meth) acrylate obtained by reacting a polyisocyanate compound with a hydroxyl group containing (meth) acrylate and having, in one molecule, at least two (meth) acryloyl groups and at least two urethane bonds, (B) a radical polymerisable low molecular weight compound, and (C) a photopolymerisation initiator, characterised in that the polyisocyanate compound has the formula wherein R I is a hydrogen atom or a methyl group and n is an integer of from 1 to 20.
Claim 2
Dependent Claim
88 words
An ultraviolet curable ink composition comprising, as main components, (A) a polyurethane poly (meth) acrylate obtained by reacting a polyisocyanate compound with a hydroxyl group containing (meth) acrylate and having, in one molecule, at least two (meth) acryloyl groups and at least two urethane bonds, (B) a radical polymerisable low molecular weight compound, and (C) a photopolymerisation initiator, characterised in that the polyisocyanate compound has the formula wherein R I is a hydrogen atom or a methyl group and n is an integer of from 1 to 20.
Claim 3
Dependent Claim
40 words
The ink composition according to claim 1, which comprises from 10 to 80 parts by weight of component (A), from 20 to 90 parts by weight of component (B), and from 0.1 to 15 parts by weight of component (C).
Claim 4
Dependent Claim
41 words
The ink composition according to claim 1, wherein the molar ratio of the isocyanate groups to the hydroxyl groups in the polyisocyanate compound and the hydroxyl group-containing (meth) acrylate constituting the polyurethane poly (meth) acrylate (A), is from 1:1 to 1:1.2.
Claim 5
Dependent Claim
16 words
The ink composition according to claim 1, wherein the hydroxyl group-containing (meth) acrylate is 2-hydroxyethyl acrylate.
Claim 6
Dependent Claim
27 words
The ink composition according to Claim 1, wherein the polyisocyanate compound is a compound of the formula: wherein n' is an integer of from 1 to 5.
Claim 7
Dependent Claim
21 words
The ink composition according to Claim 1, wherein the radical polymerizable low molecular weight compound (B) contains a phosphorus-containing vinyl monomer.
Claim 8
Dependent Claim
17 words
The ink composition according to Claim 1, wherein the photopolymerization initiator (C) is anthraquinone or its derivative.
Claim 9
Dependent Claim
64 words
The ink composition according to Claim 1, wherein the photopolymerization initiator (C) is a combination of a) anthraquinone or its derivative, b) a compound of the formula: wherein each of R 1 and R 2 is a hydrogen atom or an alkyl group, and c) a compound of the formula: wherein each of R3 and R4 is a hydrogen atom or an alkyl group.
References Cited (Backward Citations)
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