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Reduction of α-olefin-carbon monoxide copolymers to polyalcohols with borohydride salt
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1991-07-08
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Granted: 1994-04-05
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Expires: 2011-07-08
Abstract
Abstract This invention relates to a process of reducing polyketones to polyalcohols using borohydride salts where the reducing agent is suspended in water.
Inventors
- 👤 Gregory G. Hlatky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:11
CPC Classifications
C; C08; C08G; C08G67/00; C08G67/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
36 words
A process for the reduction of alpha-olefin/carbon monoxide copolymers to polyalcohols consisting essentially of: 1) suspending an alpha-olefin/carbon monoxide copolymer in water, 2) adding a borohydride salt to the suspension, and 3) recovering the polyalcohol product.
Claim 2
Dependent Claim
36 words
A process for the reduction of alpha-olefin/carbon monoxide copolymers to polyalcohols consisting essentially of: 1) suspending an alpha-olefin/carbon monoxide copolymer in water, 2) adding a borohydride salt to the suspension, and 3) recovering the polyalcohol product.
Claim 3
Dependent Claim
22 words
The process of claim 1, wherein the carbon monoxide copolymer has from about 1 mole % to 50 mole % carbonyl units.
Claim 4
Dependent Claim
18 words
The process of claim 1, wherein the carbon monoxide copolymer is a copolymer of ethylene and carbon monoxide.
Claim 5
Dependent Claim
24 words
The process of claim 1, wherein carbon monoxide in said carbon monoxide copolymer is present at about 30 mole % to 50 mole %.
Claim 6
Dependent Claim
20 words
The process of claim 1 wherein the carbon monoxide copolymer is ground to a mesh of between 2 and 60.
Claim 7
Dependent Claim
15 words
The process of claim 1, wherein the borohydride salt is sodium borohydride or potassium borohydride.
Claim 8
Dependent Claim
19 words
The process of claim 1, wherein the carbon monoxide copolymer is ground to a mesh of 20 or finer.
Claim 9
Dependent Claim
26 words
The process of claim 1, wherein the gram(s) of borohydride salt are present in a ratio of 2.0:1 or greater to gram(s) of carbon monoxide copolymer.
Claim 10
Dependent Claim
26 words
The process of claim 1, wherein the gram(s) of borohydride salt are present in a ratio between 1.5:1 and 2.5:1 to gram(s) of carbon monoxide copolymer.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |