US5241010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic rubber composition containing trithiocganuric acid, a metal suit of dithiocarbamic acid and a thiuram sulfide
Assignee: Nippon Mektron KK
•
Filing: 1991-04-23
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Granted: 1993-08-31
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Expires: 2011-04-23
Abstract
Abstract A vulcanizable acrylic rubber composition comprising an acrylic rubber containing an active halogen group and a carboxyl group, trithiocyanuric acid, and a metal salt of dithiocarbamic acid alone or together with thiuram sulfide gives a vulcanized product having very good compression set and tensile strength even if the secondary vulcanization is omitted.
Inventors
- 👤 Kazuma Yokoi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:16
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/39; C08K5/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
31 words
A vulcanizable acrylic rubber composition, which comprises an acrylic rubber containing an active halogen group and a carboxyl group, trithiocyanuric acid, a metal salt of dithiocarbamic acid, and a thiuram sulfide.
Claim 2
Dependent Claim
31 words
A vulcanizable acrylic rubber composition, which comprises an acrylic rubber containing an active halogen group and a carboxyl group, trithiocyanuric acid, a metal salt of dithiocarbamic acid, and a thiuram sulfide.
Claim 3
Dependent Claim
40 words
A vulcanizable acrylic rubber composition according to claim 1 wherein 0.01 to 5 parts by weight of the thiuram sulfide is contained per 100 parts by weight of the acrylic rubber containing an active halogen group and a carboxyl group.
Claim 4
Dependent Claim
54 words
A vulcanizable acrylic rubber composition according to claim 1 wherein 0.3 to 2 parts by weight of the metal salt of dithiocarbamic acid and 0.05 to 1 part by weight of the thiuram disulfide were contained per 100 parts by weight of the acrylic rubber containing an active halogen group and a carboxyl group.
Claim 5
Dependent Claim
77 words
A vulcanizable acrylic rubber composition according to claim 1, wherein the acrylic rubber containing an active halogen group and a carboxyl group is an elastomeric copolymer obtained by copolymerization of 60 to 99.8% by weight of alkyl acrylate monomer, 10 to 0.1% by weight of an active halogen-containing monomer, 10 to 0.1% by weight of a carboxyl group-containing monomer, and 30 to 0% by weight of at least one of other monomers copolymerization with the aforementioned monomers.
Claim 6
Dependent Claim
24 words
A vulcanizable acrylic rubber composition according to claim 4 wherein the alkyl acrylate monomer is at least one of alkyl acrylate and alkoxyalkyl acrylate.
Claim 7
Dependent Claim
29 words
A vulcanizable acrylic rubber composition according to claim 4 wherein the active halogen group-containing monomer is vinyl chloroacetate, allyl chloroacetate or an addition reaction product of glycidyl compound-monochloroacetic acid.
Claim 8
Dependent Claim
26 words
A vulcanizable acrylic rubber composition according to claim 4 wherein the carboxyl group-containing monomer is an unsaturated monocarboxylic acid or an unsaturated dicarboxylic acid monoalkyl ester.
Claim 9
Dependent Claim
42 words
A vulcanizable acrylic rubber composition according to claim 1 wherein the metal salt of dithiocarbamic acid is a compound represented by the general formula: ##STR3## wherein R: lower alkyl group, R': lower alkyl group or phenyl group M: monovalent to tetravalent metal.
Claim 10
Dependent Claim
49 words
A vulcanizable acrylic rubber composition according to claim 1 wherein the thiuram sulfide is a compound represented by the general formula ##STR4## wherein R and R': alkyl group, aralkyl group, cycloalkyl group or a heterocycle formed by combination of R and R' n: an integer of 1 to 6.
Claim 11
Dependent Claim
39 words
A vulcanizable acrylic rubber composition according to claim 1 wherein 0.1 to 10 parts by weight of trithiocyanuric acid is contained per 100 parts by weight of the acrylic rubber containing an active halogen group and a carboxyl group.
Claim 12
Dependent Claim
43 words
A vulcanizable acrylic rubber composition according to claim 1 wherein 0.1 to 10 parts by weight of the metal salt of dithiocarbamic acid is contained per 100 parts by weight of the acrylic rubber containing an active halogen group and a carboxyl group.
References Cited (Backward Citations)
US3622547A
Cited
US4434274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-30 | 1997-03-01 | 1997-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-30 | 2001-03-01 | 2001-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-30 | 2005-03-01 | 2005-08-31 | $7700.00 | Window Closed / Lapsed |