Patent US1098789A successfully refreshed from Google Patents.
US6506839B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomer composition
Assignee: Mitsui Chemicals Inc
•
Filing: 2000-10-13
•
Granted: 2003-01-14
•
Expires: 2020-10-13
Abstract
Abstract An elastomer composition obtained by crosslinking 1-99 parts by weight of a crosslinkable rubber-like polymer (A) and 1-99 parts by weight of a polypropylene resin (B) [the total amount of (A) and (B) being 100 parts by weight], where (B) is a crosslinking type polypropylene resin, has a flexural modulus of 100-10000 kgf/cm 2 as specified in JIS K6758 and has a melting point peak in the range of 100-150° C. in differential scanning calorimetry (DSC), the melting point peak calorie being in the range of 10-600 J/g, especially the above elastomer composition wherein (A) has a crosslinking degree of 1-95% and a swelling degree of 3-100.
Inventors
- 👤 Hajime Nishihara
- 👤 Shinichi Shibayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:49
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/16; C08L2314/00; C08L2314/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
An elastomer composition obtained by crosslinking 1-99 parts by weight of a crosslinkable rubber polymer (A) and 1-99 parts by weight of a polypropylene resin (B) based on 100 parts by weight of the total amount of (A) and (B), where (B) is a crosslinkable polypropylene resin containing a random copolymer resin of propylene with an α-olefin of 2 or 4-20 carbon atoms, has a flexural modulus of 100-10000 kgf/cm 2 as specified in JIS K6758 and has a peak of melting point in the range of 100-150° C. in differential scanning calorimetry (DSC), wherein the calorie in the peak of melting point being in the range of 10-600 J/g.
Claim 2
Dependent Claim
110 words
An elastomer composition obtained by crosslinking 1-99 parts by weight of a crosslinkable rubber polymer (A) and 1-99 parts by weight of a polypropylene resin (B) based on 100 parts by weight of the total amount of (A) and (B), where (B) is a crosslinkable polypropylene resin containing a random copolymer resin of propylene with an α-olefin of 2 or 4-20 carbon atoms, has a flexural modulus of 100-10000 kgf/cm 2 as specified in JIS K6758 and has a peak of melting point in the range of 100-150° C. in differential scanning calorimetry (DSC), wherein the calorie in the peak of melting point being in the range of 10-600 J/g.
Claim 3
Dependent Claim
26 words
An elastomer composition according to claim 1 , wherein the crosslinkable rubber polymer (A) has a crosslinking degree of 1-95% and a swelling degree of 3-100.
Claim 4
Dependent Claim
26 words
An elastomer composition according to claim 1 , wherein the crosslinkable rubber polymer (A) has a crosslinking degree of 1-60% and a swelling degree of 10-100.
Claim 5
Dependent Claim
26 words
An elastomer composition according to claim 1 , wherein the crosslinkable rubber polymer (A) is a styrene thermoplastic rubber polymer and/or an olefin thermoplastic rubber polymer.
Claim 6
Dependent Claim
27 words
An elastomer composition according to claim 4 , wherein the crosslinkable rubber polymer (A) is an ethylene-α-olefin copolymer comprising ethylene and an α-olefin of 3-20 carbon atoms.
Claim 7
Dependent Claim
23 words
An elastomer composition according to claim 5 , wherein the crosslinkable rubber polymer (A) is an ethylene-α-olefin copolymer produced using a metallocene catalyst.
Claim 8
Dependent Claim
19 words
An elastomer composition according to claim 1 , wherein the polypropylene resin (B) is a polypropylene random copolymer resin.
Claim 9
Dependent Claim
31 words
An elastomer composition according to claim 1 which is obtained by mixing the crosslinkable rubber polymer (A) and the polypropylene resin (B) and crosslinking the mixture with a crosslinking agent (C).
References Cited (Backward Citations)
JPS60231747A
Cited
US5037888A
Cited
US6121383A
Cited
JPH08120127A
Cited
JPH09104787A
Cited
US5621045A
Cited
JPH09137001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-01-13 | 2006-07-15 | 2007-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-01-13 | 2010-07-15 | 2011-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-01-13 | 2014-07-15 | 2015-01-14 | $7700.00 | Window Closed / Lapsed |