US3607829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfur-curable elastomer having improved building tack
Assignee: EIDP Inc
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Filing: 1968-07-31
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Granted: 1971-09-21
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Expires: 1988-07-31
Abstract
Abstract A sulfur-curable synthetic elastomer is tackified by mixing with an isoprenoidal resin characterized by a polymer of an isoprene/piperylene co-dimer and an allylically terminated cyclo compound, such as dicyclopentadiene.
Inventors
- 👤 Alexander T Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
C; C08; C08L; C08L21/00; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/09; C08L23/00; C08L23/02; C08L23/16; C08L91/00; C08L2205/00; C08L2205/02; C08L2205/025; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
21 words
The composition of claim 1 to which the elastomer is a terpolymer of ethylene, a C3-C8 alpha-olefin and a C6-C22 diene.
Claim 2
Dependent Claim
14 words
The composition of claim 2 in which the elastomer is an ethylene/propylene/C6-C22 diene polymer.
Claim 3
Dependent Claim
13 words
The composition of claim 3 in which the elastomer is an ethylene/propylene/1,4-hexadiene polymer.
Claim 4
Dependent Claim
21 words
The composition of claim 3 in which the allylically terminated cyclic compound is the reaction product of dicyclopentadiene and alpha-methyl styrene.
Claim 5
Dependent Claim
21 words
The composition of claim 3 in which the allylically terminated cyclic compound is the reaction product of dicyclopentadiene and 2-methyl butene-2.
Claim 6
Dependent Claim
19 words
The composition of claims 5 and 6 in which the isoprenoidal resin contains 80-95 percent codimer units by weight.
Claim 7
Dependent Claim
31 words
The composition of claim 1 in which the isoprenoidal resin is made by polymerization of isoprene and piperylene in the presence of the cyclic compound, a terminator and a Friedel-Crafts catalyst.
Claim 8
Dependent Claim
36 words
The composition of claim 3 in which the isoprenoidal resin is made by copolymerizing, in the presence of a Friedel-Crafts catalyst, isoprene and piperylene in the presence of dicyclopentadiene and (1) alpha-methyl styrene or (2) 2-methyl-2-butene.
Claim 9
Dependent Claim
13 words
The composition of claim 9 in which the elastomer is an ethylene/propylene/1,4-hexadiene polymer.
Claim 10
Dependent Claim
13 words
A black loaded composition of claim 10 containing 30-60 phr. of isoprenoidal resin.
Claim 11
Dependent Claim
26 words
The composition of claim 1 in which the elastomer is butyl rubber, a butadiene polymer, or a butadiene/styrene polymer along or in combination with natural rubber.
Claim 12
Dependent Claim
29 words
The composition of claim 1 in which the synthetic elastomer is a butyl rubber, a butadiene polymEr, or a butadiene/styrene polymer in combination with an ethylene/C3-C8 alpha-olefin/C6-C22 diene terpolymer.
Claim 13
Dependent Claim
36 words
The composition of claim 3 in which the isoprenoidal resin is made by copolymerizing, in the presence of a Friedel-Crafts catalyst, isoprene and piperylene in the presence of cyclopentadiene and (1) alpha-methyl styrene or (2) 2-methyl-2-butene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |