US4308799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry planographic printing plate
Assignee: TOYRAY INDUSTRIES INCORPORATED A CORP OF JAPAN
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Filing: 1980-10-27
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Granted: 1982-01-05
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Expires: 2000-10-27
Abstract
Abstract Provided is a dry planographic printing plate containing on a base substrate a mixture which mixture comprises an organopolysiloxane; an alkoxy silane as a cross-linking agent represented by the formula R 4-a-b R' a Si(OR") b wherein a is 0 or 1, b is 2 or 3 and a+b is at most 3, R is an organic group containing a polar group or double bond and OR" is an alkoxy group; and a compound as a cross-linking catalyst represented by the formula (R 1 O)(R 2 O)(R 3 O)(R 4 O)M wherein M is titanium or zirconium, R 1 , R 2 , R 3 and R 4 are each an organic group.
Inventors
- 👤 Takao Kitagawa
- 👤 Shigeo Abiko
- 👤 Tadami Kamaishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:19
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; G03G13/28; G03G13/286; B; B41; B41N; B41N1/00; B41N1/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
197 words
A dry planographic printing plate which comprises a base substrate and an ink repellent silicone layer overlying the substrate, said silicone layer comprises a mixture of (A) an organopolysiloxane; (B) an alkoxy silane represented by the formula R.sub.4-a-b R'.sub.a Si(OR").sub.b wherein R is an organic group having 1 to 18 carbon atoms which contains a member selected from the group consisting of an olefinically unsaturated hydrocarbon group, an aromatic hydrocarbon group and a polar group which does not react with the OR" at room temperature, R' is an alkyl or alicyclic group having 1 to 18 carbon atoms, OR" is an alkoxy group having 1 to 8 carbon atoms, a is 0 or 1, b is 2 or 3, and a+b is at most 3; and (C) a titanium or a zirconium compound represented by the formula (R.sup.1 O)(R.sup.2 O)(R.sup.3 O)(R.sup.4 O)M wherein R 1 , R 2 , R 3 , R 4 are each an organic group having 1 to 18 carbon atoms or an organic group having 1 to 18 carbon atoms containing a residue of >C═O, ##STR5## by which the group is bonded to the oxygen atom, and M is titanium or zirconium.
Claim 2
Dependent Claim
197 words
A dry planographic printing plate which comprises a base substrate and an ink repellent silicone layer overlying the substrate, said silicone layer comprises a mixture of (A) an organopolysiloxane; (B) an alkoxy silane represented by the formula R.sub.4-a-b R'.sub.a Si(OR").sub.b wherein R is an organic group having 1 to 18 carbon atoms which contains a member selected from the group consisting of an olefinically unsaturated hydrocarbon group, an aromatic hydrocarbon group and a polar group which does not react with the OR" at room temperature, R' is an alkyl or alicyclic group having 1 to 18 carbon atoms, OR" is an alkoxy group having 1 to 8 carbon atoms, a is 0 or 1, b is 2 or 3, and a+b is at most 3; and (C) a titanium or a zirconium compound represented by the formula (R.sup.1 O)(R.sup.2 O)(R.sup.3 O)(R.sup.4 O)M wherein R 1 , R 2 , R 3 , R 4 are each an organic group having 1 to 18 carbon atoms or an organic group having 1 to 18 carbon atoms containing a residue of >C═O, ##STR5## by which the group is bonded to the oxygen atom, and M is titanium or zirconium.
Claim 3
Dependent Claim
27 words
The dry planographic printing plate as defined in claim 1, in which said organopolysiloxane is a di-organopolysiloxane containing a silanol group at one or both ends thereof.
Claim 4
Dependent Claim
23 words
The dry planographic printing plate as defined in claim 1, in which R of said alkoxy silane is vinyl, alkyl, phenyl, or vinylphenyl.
Claim 5
Dependent Claim
36 words
The dry planographic printing plate as defined in claim 1, in which R of said alkoxy silane is a hydrocarbon group containing amino, epoxy, acyclic ether, hydroxyl, carboxyl, ester, carbonyl, mercapto, halogen, nitrile or imino group.
Claim 6
Dependent Claim
46 words
The dry planographic printing plate as defined in claim 1, in which R 1 , R 2 , R 3 and R 4 in said titanium or zirconium compound, which may be alike or different, are each a hydrocarbon group having 1 to 12 carbon atoms.
Claim 7
Dependent Claim
46 words
The dry planographic printing plate as defined in claim 1, in which R 1 , R 2 , R 3 and R 4 in said titanium or zirconium compound, which may be alike or different, are each an alkyl group having 1 to 12 carbon atoms.
Claim 8
Dependent Claim
60 words
The dry planographic printing plate as defined in claim 1, in which at least one of R 1 , R 2 , R 3 and R 4 in said titanium or zirconium compound is a hydrocarbon group having 1 to 12 carbon atoms and containing the residue of >C═O, ##STR6## by which the group is bonded to the oxygen atom.
Claim 9
Dependent Claim
30 words
The dry planographic printing plate as defined in claim 1, in which the ratio of said organopolysiloxane (A) to said alkoxy silane (B) is A/B=199/1 to 40/60 (in weight ratio).
Claim 10
Dependent Claim
30 words
The dry planographic printing plate as defined in claim 1, in which the ratio of said organopolysiloxane (A) to said alkoxy silane (B) is A/B=98.5/1.5 to 70/30 (in weight ratio).
Claim 11
Dependent Claim
37 words
The dry planographic printing plate as defined in claim 1, in which the ratio of said organopolysiloxane (A) and said alkoxy silane (B) to said titanium or zirconium compound (C) is (A+B)/C=100/0.1 to 100/20 (in weight ratio).
Claim 12
Dependent Claim
37 words
The dry planographic printing plate as defined in claim 1, in which the ratio of said organopolysiloxane (A) and said alkoxy silane (B) to said titanium or zirconium compound (C) is (A+B)/C=100/0.2 to 100/10 (in weight ratio).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |