Patent US4652616A successfully refreshed from Google Patents.
US4652616A
Expired / Lapsed
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Chlorinated ethylene copolymer resins
Assignee: Osaka Soda Co Ltd
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Filing: 1985-04-03
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Granted: 1987-03-24
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Expires: 2005-04-03
Abstract
Abstract A chlorinated ethylene copolymer resin having a chlorine content of 5-50% by weight obtained by chlorinating an ethylene copolymer resin by the aqueous suspension method at a temperature of 100 DEG C. or higher in at least one chlorination stage, said copolymer resin being obtained by copolymerizing ethylene and as at least one comonomer 0.02-2.0 mol % of a nonconjugated diene using a polymerization catalyst comprising a solid catalytic component containing at least magnesium and titanium and an organic aluminum compound and having a maximum peak temperature according to the differential scanning calorimetry (DSC) of 100 DEG C. or higher.
Inventors
- 👤 Takeshi Kamiya
- 👤 Kazuo Matsuura
- 👤 Mituji Miyoshi
- 👤 Kozo Misumi
- 👤 Seiji Kadomatsu
- 👤 Shinji Nose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:48
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
A chlorinated ethylene copolymer resin having a chlorine content of 5 to 50% by weight obtained by chlorinating an ethylene copolymer resin having a maximum peak temperature, as determined by differential scanning calorimetry (DSC), with a scanning temperature range of 0° C. to 170° C., of at least 100° C. by the aqueous suspension method at a temperature above 100° C. and a pressure sufficient to maintain said aqueous suspension in at least one chlorination stage, said copolymer resin being obtained by copolymerizing ethylene and as comonomer 0.02 to 2.0 mol % of at least one nonconjugated diene containing 5 to 15 carbon atoms using a polymerization catalyst comprising a solid catalytic component containing at least magnesium and titanium and an organic aluminum compound.
Claim 2
Dependent Claim
124 words
A chlorinated ethylene copolymer resin having a chlorine content of 5 to 50% by weight obtained by chlorinating an ethylene copolymer resin having a maximum peak temperature, as determined by differential scanning calorimetry (DSC), with a scanning temperature range of 0° C. to 170° C., of at least 100° C. by the aqueous suspension method at a temperature above 100° C. and a pressure sufficient to maintain said aqueous suspension in at least one chlorination stage, said copolymer resin being obtained by copolymerizing ethylene and as comonomer 0.02 to 2.0 mol % of at least one nonconjugated diene containing 5 to 15 carbon atoms using a polymerization catalyst comprising a solid catalytic component containing at least magnesium and titanium and an organic aluminum compound.
Claim 3
Dependent Claim
21 words
The chlorinated ethylene copolymer resin according to claim 1 wherein the nonconjugated diene is selected from vinylnorbornene, ethylidene norbornene and 1,4-hexadiene.
Claim 4
Dependent Claim
41 words
The chlorinated ethylene copolymer resin according to claim 1 wherein the ethylene copolymer resin is a copolymer of ethylene, a nonconjugated diene and less than 5.0 mol % of an α-olefin on the basis of the sum of α-olefin and ethylene.
Claim 5
Dependent Claim
31 words
The chlorinated ethylene copolymer resin according to claim 3 wherein proportion of the α-olefin to be copolymerized is 0.01-4 mol % on the basis of the sum of α-olefin and ethylene.
Claim 6
Dependent Claim
16 words
The chlorinated ethylene copolymer resin according to claim 3 wherein the α-olefin is 1-butene of 1-hexene.
Claim 7
Dependent Claim
13 words
Rubber obtained by vulcanizing a chlorinated ethylene copolymer resin according to claim 1.
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) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |