US4517383A
Expired / Lapsed
US
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Alkylene oxide adducts of aniline having reduced viscosity
Assignee: BASF Corp
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Filing: 1983-07-05
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Granted: 1985-05-14
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Expires: 2003-07-05
Abstract
Abstract The subject invention relates to alkylene oxide adducts of aniline prepared by reacting an alkylene oxide with an aniline in the presence of preferably at least 0.1 part of alkali metal hydroxide per 100 parts by weight of aniline. The resulting compositions may be used in the preparation of polyurethane products, such as rigid polyurethane foams, and may also be used as nonionic surfactants.
Inventors
- 👤 Alexander Korczak
- 👤 William W. Levis, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:27
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5033; C08G2110/00; C08G2110/0025; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
A cogeneric mixture of compounds having the following structural formula: ##STR2## wherein R' and R" are alkylene radicals which may be the same or different having from 2 to 4 carbon atoms; x is an integer from 0 to 50; y is an integer from 0 to 50; and x+y must be greater than 1 and less than 50.
Claim 2
Dependent Claim
59 words
A cogeneric mixture of compounds having the following structural formula: ##STR2## wherein R' and R" are alkylene radicals which may be the same or different having from 2 to 4 carbon atoms; x is an integer from 0 to 50; y is an integer from 0 to 50; and x+y must be greater than 1 and less than 50.
Claim 3
Dependent Claim
20 words
The composition of claim 1 wherein R' and R" represent one or more ethylene groups, propylene groups, or mixtures thereof.
Claim 4
Dependent Claim
14 words
The composition of claim 2 wherein x+y is an integer from 2 to 10.
Claim 5
Dependent Claim
32 words
A process for preparing a polyol composition which comprises reacting an alkylene oxide with aniline in the presence of at least 0.1 part of alkali metal hydroxide per 100 parts of aniline.
Claim 6
Dependent Claim
32 words
A process for preparing a polyol composition which comprises reacting an alkylene oxide with aniline in the presence of at least 0.1 part of alkali metal hydroxide per 100 parts of aniline.
Claim 7
Dependent Claim
19 words
The process of claim 4 wherein potassium hydroxide is used as the alkali metal hydroxide to prepare the polyol.
Claim 8
Dependent Claim
18 words
The process of claim 5 wherein temperatures of at least 110° C. are used to prepare the polyol.
Claim 9
Dependent Claim
27 words
The process of claim 6 wherein from 0.2 part to 0.45 part of alkali metal hydroxide per 100 parts of aniline is used to prepare the polyol.
Claim 10
Dependent Claim
20 words
The process of claim 7 wherein from 2 to 10 moles of alkylene oxide are reacted per mole of aniline.
Claim 11
Dependent Claim
39 words
A polyol blend comprising from 10 to 90 parts by weight, based upon 100 parts by weight of the blend, of a polyoxyalkylene polyether polyol, and from 90 to 10 parts by weight of the polyol of 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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |