Patent US4726909A successfully refreshed from Google Patents.
US4726909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low odor surfactant
Assignee: BASF Corp
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Filing: 1985-12-23
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Granted: 1988-02-23
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Expires: 2005-12-23
Abstract
Abstract Relates to deodorizing a polyoxypropylene group terminated polyoxyalkylene polyether polyol composition by removing allyloxypropan-2-ol in sufficient amount to reduce the content to less than 200 ppm.
Inventors
- 👤 Jay G. Otten
- 👤 Edward J. Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:24
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/722; C08; C08G; C08G65/00; C08G65/02; C08G65/32
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
28 words
An oxypropylene group terminated polyoxyalkylene polyether polyol composition made by a base catalyzed process containing less than 200 ppm allyloxypropan-2-ol said composition being substantially free from undesirable odor.
Claim 2
Dependent Claim
28 words
An oxypropylene group terminated polyoxyalkylene polyether polyol composition made by a base catalyzed process containing less than 200 ppm allyloxypropan-2-ol said composition being substantially free from undesirable odor.
Claim 3
Dependent Claim
50 words
The composition of claim 1 wherein said polyoxyalkylene polyether polyol is a cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure oxyethylene groups, oxypropylene groups, and the nucleus of an active hydrogen-containing organic compound having about 1 to 18 aliphatic carbon atoms and about 1 to 6 hydrogen atoms.
Claim 4
Dependent Claim
54 words
The composition of claim 2 wherein the oxyethylene groups are present in polyoxyethylene chains that are attached to the nucleus at the site of the reactive hydrogen atoms and the oxypropylene groups are attached to the oxyethylene groups at the end opposite the end of said oxyethylene groups which are attached to the nucleus.
Claim 5
Dependent Claim
37 words
The composition of claim 3 wherein said polyoxyalkylene polyol has molecular weight of the polyoxypropylene hydrophobe of about 700 to 10,000 and the percent oxyethylene groups is from about 10 to 40 percent of the surfactant molecule.
Claim 6
Dependent Claim
13 words
The composition of claim 4 wherein said active hydrogen-containing organic compound is trimethylolpropane.
Claim 7
Dependent Claim
80 words
The composition of claim 2 wherein said polyoxyalkylene polyols are oxypropylene group capped polyols and the polyoxyalkylene polyol prior to capping is a polyoxypropylene polyoxyethylene block copolymer wherein the oxypropylene groups are present in chains that are attached to the nucleus of the active hydrogen-containing organic compound at the site of the reactive hydrogen atoms, the oxyethylene groups being attached to the polyoxypropylene groups at the end opposite the end of said latter groups which are attached to the nucleus.
Claim 8
Dependent Claim
51 words
The composition of claim 6 wherein the molecular weight of the polyoxypropylene hydrophobe of said copolymer prior to capping is from about 700 to 15,000, and the oxyethylene groups of said polyoxyalkylene copolymer prior to capping range from about 10 to 40 percent by weight of said compound prior to capping.
Claim 9
Dependent Claim
13 words
The composition of claim 7 wherein said active hydrogen-containing organic compound is trimethylolpropane.
Claim 10
Dependent Claim
14 words
A cleaning composition comprising the composition of claim 2 plus conventional machine dishwashing components.
Claim 11
Dependent Claim
33 words
The composition of claim 9 wherein the amount of the composition of claim 2 is about 1 to 5 percent and the amount of conventional cleaning components is about 95 to 99 percent.
Claim 12
Dependent Claim
7 words
The composition of claim 9 including builders.
Claim 13
Dependent Claim
8 words
The composition of claim 9 including chlorine-releasing agents.
Claim 14
Dependent Claim
11 words
The cleaning composition of claim 9 including a conventional nonionic surfactant.
Claim 15
Dependent Claim
8 words
The cleaning composition of claim 9 including additives.
Claim 16
Dependent Claim
15 words
A washing solution comprising about 0.1 to 0.5 percent of the composition of claim 9.
Claim 17
Dependent Claim
50 words
The cleaning composition of claim 9 comprising about 1.0 to 5.0 percent of the polyoxyalkylene polyol of claim 2, about 25 to 80 percent builder, about 0.5 to 2.5 percent available chlorine, about 1.0 to 5.0 percent by weight conventional nonionic surfactant, and about 0 to about 60 percent additives.
Claim 18
Dependent Claim
77 words
An oxypropylene group terminated polyoxyalkylene polyether polyol composition made by a base catalyzed process containing less than 200 ppm allyloxypropan-2-ol produced by the process comprising removing said allyloxypropan-2-ol, along with other impurities, by subjecting said polyol to a vacuum of about 1.0 to 10 mm of mercury and then adjusting the pressure to 2.0 to 70 mm of mercury by injecting nitrogen below the surface of the liquid polyol said composition being substantially free from undesirable odor.
Claim 19
Dependent Claim
77 words
An oxypropylene group terminated polyoxyalkylene polyether polyol composition made by a base catalyzed process containing less than 200 ppm allyloxypropan-2-ol produced by the process comprising removing said allyloxypropan-2-ol, along with other impurities, by subjecting said polyol to a vacuum of about 1.0 to 10 mm of mercury and then adjusting the pressure to 2.0 to 70 mm of mercury by injecting nitrogen below the surface of the liquid polyol said composition being substantially free from undesirable odor.
Claim 20
Dependent Claim
27 words
The product of claim 17 produced by said process wherein said nitrogen is injected by means of a conduit extending beneath the surface of the liquid polyol.
Claim 21
Dependent Claim
25 words
The product of claim 18 produced by said process wherein said conduit leads to a sparger through which said nitrogen enters into said liquid polyol.
Claim 22
Dependent Claim
18 words
The product of claim 19 produced by said process wherein said sparging is through a continuous circular conduit.
Claim 23
Dependent Claim
21 words
The product of claim 17 produced by said process wherein said nitrogen is injected through the drain of the treatment vessel.
Claim 24
Dependent Claim
53 words
The product of claim 17 produced by said process wherein said polyoxyalkylene polyether polyol is cogeneric mixture of conjugated polyoxyalkylene compounds containing in their structure oxyethylene groups, oxypropylene groups, and the nucleus of an active hydrogen-containing organic compound having about 1 to 18 aliphatic carbon atoms and about 1 to 6 hydrogen atoms.
Claim 25
Dependent Claim
19 words
The product of claim 17 produced by said process wherein the temperature is from about 120° to 165° C.
Claim 26
Dependent Claim
58 words
The product of claim 22 produced by said process wherein the oxyethylene groups are present in polyoxyethylene chains that are attached to the nucleus at the site of the reactive hydrogen atoms and the oxypropylene groups are attached to the oxyethylene groups at the end opposite the end of said oxyethylene groups which are attached to the nucleus.
Claim 27
Dependent Claim
83 words
The product of claim 22 produced by said process wherein said polyoxyalkylene polyols are oxypropylene group capped polyols and the polyoxyalkylene polyol prior to capping is a polyoxypropylene polyoxyethylene block copolymer wherein oxypropylene groups are present in chains that are attached to the nucleus of the active hydrogen-containing organic compound at the site of the reactive hydrogen atoms, the oxyethylene groups being attached to the polyoxypropylene groups at the end opposite the end of said latter groups which are attached to the nucleus.
Claim 28
Dependent Claim
17 words
The product of claim 22 produced by said process wherein said active hydrogen containing compound is trimethylolpropane.
References Cited (Backward Citations)
US2677700A
Cited
US2674619A
Cited
US2979528A
Cited
US3036118A
Cited
GB955482A
Cited
US3118000A
Cited
US3117999A
Cited
US3314891A
Cited
US3802905A
Cited
US3956401A
Cited
US4207421A
Cited
US4256601A
Cited
US4244832A
Cited
JPS5647497A
Cited
US4272394A
Cited
US4306987A
Cited
US4411810A
Cited
JPS59166600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |