US4259462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardenable composition containing diisopropylbenzene dihydroperoxide
Assignee: Denka Co Ltd
•
Filing: 1979-06-18
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Granted: 1981-03-31
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Expires: 1999-06-18
Abstract
Abstract A hardenable composition comprises (1) an acrylate and/or methacrylate monomer; (2) diisopropylbenzene dihydroperoxide as a hardener and a hardening accelerator.
Inventors
- 👤 Tatsuo Nakano
- 👤 Shozo Hori
- 👤 Ikuji Kishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:41
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09D; C09D4/00; C09J; C09J4/00; C09K2200/00; C09K2200/06; C09K2200/0615; C09K2200/0625
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
A hardenable composition which consists essentially of (1) an acrylate and/or a methacrylate monomer wherein the monomer contains more than 50 wt.% of acrylate and/or methacrylate, (2) more than 0.5 wt. part of a hardener consisting essentially of diisopropylbenzene dihydroperoxide, (3) more than 0.01 wt. part of a hardening accelerator to 100 wt. parts of total monomers and (4) an additive which improves the impact strength and peeling strength of said composition.
Claim 2
Dependent Claim
72 words
A hardenable composition which consists essentially of (1) an acrylate and/or a methacrylate monomer wherein the monomer contains more than 50 wt.% of acrylate and/or methacrylate, (2) more than 0.5 wt. part of a hardener consisting essentially of diisopropylbenzene dihydroperoxide, (3) more than 0.01 wt. part of a hardening accelerator to 100 wt. parts of total monomers and (4) an additive which improves the impact strength and peeling strength of said composition.
Claim 3
Dependent Claim
57 words
The hardenable composition of claim 1, wherein the additive is selected from the group consisting of nitrile-butadiene rubber, non-block styrene-butadiene rubber, styrene-butadiene block polymers, polychloroprenes, non-graft polymers of butadiene, carboxylated polymers thereof, polyethylene chlorosulfonates and graft polymers containing components of butadiene with at least one compound selected from the group consisting of acrylonitrile, styrene and methyl methacrylate.
Claim 4
Dependent Claim
12 words
The hardenable composition of claim 1, wherein the polymer is nitrile-butadiene rubber.
Claim 5
Dependent Claim
113 words
A hardenable composition, which consists essentially of; (1) an acrylate and/or methacrylate monomer wherein the monomer contains more than 50 wt.% of an acrylate and/or a methacrylate, (2) more than 0.5 parts by weight of a hardener consisting essentially of diisopropylbenzene dihydroperoxide, (3) more than 0.01 part by weight of a hardening accelerator to 100 parts by weight of total monomers and (4) an additive selected from the group consisting of nitrile-butadiene rubber, non-block styrene butadiene rubber, styrene-butadiene block polymers, polychloroprenes, non-graft polymers of butadiene, carboxylated polymers thereof, polyethylene chlorosulfonates and graft polymers containing components of butadiene with at least one compound selected from the group consisting of acrylonitrile, styrene and methyl methacrylate.
Claim 6
Dependent Claim
113 words
A hardenable composition, which consists essentially of; (1) an acrylate and/or methacrylate monomer wherein the monomer contains more than 50 wt.% of an acrylate and/or a methacrylate, (2) more than 0.5 parts by weight of a hardener consisting essentially of diisopropylbenzene dihydroperoxide, (3) more than 0.01 part by weight of a hardening accelerator to 100 parts by weight of total monomers and (4) an additive selected from the group consisting of nitrile-butadiene rubber, non-block styrene butadiene rubber, styrene-butadiene block polymers, polychloroprenes, non-graft polymers of butadiene, carboxylated polymers thereof, polyethylene chlorosulfonates and graft polymers containing components of butadiene with at least one compound selected from the group consisting of acrylonitrile, styrene and methyl methacrylate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |