US3887633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer oils and process for preparing same
Assignee: Zeon Corp
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Filing: 1973-08-06
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Granted: 1975-06-03
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Expires: 1993-08-06
Abstract
Abstract A process for preparing polymer oils comprising polymerizing 1,3-pentadiene together with or without at least one other olefin copolymerizable therewith in a homogenizable Friedel Crafts type catalyst to produce a liquid polymer having a number average molecular weight of 300 - 1,000 wherein at least 70 percent of the pentadiene units is of trans structure and then hydrogenating said liquid polymer to the extent that its iodine number is decreased to not more than 60; the polymer oils; and compositions containing the polymer oil as the base material.
Inventors
- 👤 Tadahiro Go
- 👤 Motoyuki Yamato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:41
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22; C; C08; C08C; C08C19/00; C08C19/02; C08F; C08F36/00; C08F36/02; C08F36/04; C10; C10M; C10M107/00; C10M107/02; C10M107/14; C10M3/00; C10M2201/00; C10M2201/10; C10M2201/102; C10M2201/103; C10M2201/105; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/10; C10M2203/102; C10M2205/00; C10M2205/06; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/404; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2040/00; C10N2040/08; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
168 words
A PROCESS FOR PREPARING OIL OF POUR POINT OF NOT HIGHER THAN -30*C, A FLASH POINT OF NOT LOWER THAN 180*C, A SPECIFIC GRAVITY OF 0.92 - 0.94, AN ACID VALUE OF NOT MORE THAN 0.02MGKOH/G, A SAPONIFICATION VALUE OF NOT MORE THAN 0.02MGKOH/G, A HAZEN NUMBER OF NOT MORE THAN 50, A NUMBER AVERAGE MOLECULAR WEIGHT OF 300 - 1,000, AND AN IODINE NUMBER OF NOT MORE THAN 60 COMPRISING THE STEPS OF: POLYMERIZING A MONOMER CONTAINING AT LEAST 80 PERCENT OF 1,3-PENTADIENE AT TEMPERATURES OF FROM -30*C TO 100*C IN THE PRESENCE OF A HOMOGENIZABLE FRIEDEL-CRAFTS TYPE CATALYST TO PRODUCE A LIQUID POLYMER HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF 300 - 1,000 AND AN IODINE NUMBER OF NOT LESS THAN 250 WHEREIN AT LEAST 70 PERCENT OF THE PENTADIENE UNITS IS OF TRANS STRUCTURE, AND THEN HYDROGENATING THE THUS-PRODUCED LIQUID POLYMER TO THE EXTENT THAT ITS IODINE NUMBER IS DECREASED TO NOT MORE THAN 60 AS DETERMINED BY WIJS METHOD, THEREBY OBTAINING SAID POLYMER OIL.
Claim 2
Dependent Claim
168 words
A PROCESS FOR PREPARING OIL OF POUR POINT OF NOT HIGHER THAN -30*C, A FLASH POINT OF NOT LOWER THAN 180*C, A SPECIFIC GRAVITY OF 0.92 - 0.94, AN ACID VALUE OF NOT MORE THAN 0.02MGKOH/G, A SAPONIFICATION VALUE OF NOT MORE THAN 0.02MGKOH/G, A HAZEN NUMBER OF NOT MORE THAN 50, A NUMBER AVERAGE MOLECULAR WEIGHT OF 300 - 1,000, AND AN IODINE NUMBER OF NOT MORE THAN 60 COMPRISING THE STEPS OF: POLYMERIZING A MONOMER CONTAINING AT LEAST 80 PERCENT OF 1,3-PENTADIENE AT TEMPERATURES OF FROM -30*C TO 100*C IN THE PRESENCE OF A HOMOGENIZABLE FRIEDEL-CRAFTS TYPE CATALYST TO PRODUCE A LIQUID POLYMER HAVING A NUMBER AVERAGE MOLECULAR WEIGHT OF 300 - 1,000 AND AN IODINE NUMBER OF NOT LESS THAN 250 WHEREIN AT LEAST 70 PERCENT OF THE PENTADIENE UNITS IS OF TRANS STRUCTURE, AND THEN HYDROGENATING THE THUS-PRODUCED LIQUID POLYMER TO THE EXTENT THAT ITS IODINE NUMBER IS DECREASED TO NOT MORE THAN 60 AS DETERMINED BY WIJS METHOD, THEREBY OBTAINING SAID POLYMER OIL.
Claim 3
Dependent Claim
170 words
A process for preparing a polymer oil of pour point of not higher than -30*C, a flash point of not lower than 180*C, a specific gravity of 0.92 - 0.94, an acid value of not more than 0.02mgKOH/g, a saponification value of not more than 0.02mgKOH/g, a Hazen number of not more than 50, a number average molecular weight of 300 - 1,000, and an iodine number of not more than 60 comprising the steps of: polymerizing a monomer containing at least 80 percent of 1,3-pentadiene at temperatures of from -30*C to 100*C in the presence of a homogenizable Friedel-Crafts type catalyst to produce a liquid polymer having a number average molecular weight of 300 - 1,000 and an iodine number of not less than 250 wherein at least 70 percent of the pentadiene units is of trans structure, and then hydrogenating the thus-produced liquid polymer to the extent that its iodine number is decreased to not more than 60 as determined by Wijs method, thereby obtaining said polymer oil.
Claim 4
Dependent Claim
170 words
A process for preparing a polymer oil of pour point of not higher than -30*C, a flash point of not lower than 180*C, a specific gravity of 0.92 - 0.94, an acid value of not more than 0.02mgKOH/g, a saponification value of not more than 0.02mgKOH/g, a Hazen number of not more than 50, a number average molecular weight of 300 - 1,000, and an iodine number of not more than 60 comprising the steps of: polymerizing a monomer containing at least 80 percent of 1,3-pentadiene at temperatures of from -30*C to 100*C in the presence of a homogenizable Friedel-Crafts type catalyst to produce a liquid polymer having a number average molecular weight of 300 - 1,000 and an iodine number of not less than 250 wherein at least 70 percent of the pentadiene units is of trans structure, and then hydrogenating the thus-produced liquid polymer to the extent that its iodine number is decreased to not more than 60 as determined by Wijs method, thereby obtaining said polymer oil.
Claim 5
Dependent Claim
34 words
A process according to claim 1, wherein at least one other olefin copolymerizable with 1,3-pentadiene is substituted for the 1,3-pentadiene in amounts of not more than 20 percent by weight of the total monomers.
Claim 6
Dependent Claim
81 words
A polymer oil consisting of a hydrogenated polypentadiene, having a number average molecular weight of from 300 to 1,000, an iodine number of not more than 60, an acid value of not more than 0.02 mg KOH/g, a saponification value of not more than 0.02 mg KOH/g, a Hazen number of not more than 50, a specific gravity of from 0.92 to 0.94, and a pour point of not higher than -30*C and a flash point of not lower than 180*C.
Claim 7
Dependent Claim
81 words
A polymer oil consisting of a hydrogenated polypentadiene, having a number average molecular weight of from 300 to 1,000, an iodine number of not more than 60, an acid value of not more than 0.02 mg KOH/g, a saponification value of not more than 0.02 mg KOH/g, a Hazen number of not more than 50, a specific gravity of from 0.92 to 0.94, and a pour point of not higher than -30*C and a flash point of not lower than 180*C.
Claim 8
Dependent Claim
115 words
A polymer oil consisting of a liquid polymer, in the hydrogenated form, prepared from not less than 80 percent by weight of 1,3-pentadiene and not more than 20 percent by weight of at least one other olefin copolymerizable therewith, the polymer oil having a number average molecular weight of from 300 to 1,000, an iodine number of not more than 60, an acid value of not more than 0.02 mg KOH/g, a saponification value of not more than 0.02 mg KOH/g, a Hazen number of not more than 50, a specific gravity of from 0.92 to 0.94, and a pour point of not higher than -30*C and a flash point of not lower than 180*C.
Claim 9
Dependent Claim
115 words
A polymer oil consisting of a liquid polymer, in the hydrogenated form, prepared from not less than 80 percent by weight of 1,3-pentadiene and not more than 20 percent by weight of at least one other olefin copolymerizable therewith, the polymer oil having a number average molecular weight of from 300 to 1,000, an iodine number of not more than 60, an acid value of not more than 0.02 mg KOH/g, a saponification value of not more than 0.02 mg KOH/g, a Hazen number of not more than 50, a specific gravity of from 0.92 to 0.94, and a pour point of not higher than -30*C and a flash point of not lower than 180*C.
Claim 10
Dependent Claim
14 words
An insulating oil comprising the polymer oil of claim 3 as the base oil.
Claim 11
Dependent Claim
14 words
An insulating oil comprising the polymer oil of claim 4 as the base oil.
Claim 12
Dependent Claim
13 words
A lubricant comprising the polymer oil of claim 3 as the base oil.
Claim 13
Dependent Claim
13 words
A lubricant comprising the polymer oil of claim 4 as the base oil.
Claim 14
Dependent Claim
17 words
A lubricant comprising the polymer oil of claim 3 as the base oil, and a thickening agent.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |