Patent US3928238A successfully refreshed from Google Patents.
US4011389A
Expired / Lapsed
US
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Glycoside polyethers
Assignee: BASF Corp
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Filing: 1975-03-21
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Granted: 1977-03-08
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Expires: 1995-03-21
Abstract
Abstract To obtain nonionic surfactants having solubility and stability in relatively strong aqueous solution of caustic, salt or other electrolytes, corn starch or a similar source of glucose units is reacted with an alcohol containing up to about 4 carbon atoms to obtain a glycoside somewhat more lipophilic than the saccharide, and then the resulting glycoside is reacted with a hydrophobic oxirane-containing material such as a C 6 to C 18 epoxyalkane or a glycidyl ether having about the same number of carbon atoms.
Inventors
- 👤 William K. Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:22
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22; C07D303/24; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/08; C08; C08B; C08B31/00; C08B31/08; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
258 words
A material having the formula RO--(C.sub.6 H.sub.10 O.sub.5).sub.n --R.sup.1 in which (C 6 H 10 O 5 ) represents a glycosyl unit; n is an integer from 1 to 20; R is selected from the group consisting of 2-hydroxypropyl, 2-hydroxyethyl, glyceryl, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, methoxethyl, and ethoxyethyl, said R being joined to a glycosyl unit through an acetal linkage; R 1 is selected from the group consisting of --OCH.sub.2 --CHOH--R.sup.2, --och.sub.2 --choh-ch.sub.2 or.sub.3, ##STR4## and --O--M--O--(C.sub.6 H.sub.10 O.sub.5).sub.n --OR; R 2 is an alkyl group containing 6 to 18 carbon atoms; R 3 is an alkyl group containing 6 to 18 carbon atoms; R 4 is selected from the group consisting of methyl and ethyl; R 5 is an alkyl group containing 1 to 6 carbon atoms; R 6 is an alkyl group containing 4 to 20 carbon atoms; p is an integer of from 3 to 20; q is an integer of from 0 to 20; M is a hydrophobic chain of 6 to 40 units selected from the group consisting of oxypropylene and oxypropylene-oxyethylene units wherein the oxypropylene content of said hydrophobic chain is from about 75 to 100 weight percent and the oxyethylene content is from 0 to 25 weight percent; and R 1 , r 2 , r 3 , r 4 , r 5 , r 6 , m, p and q are so selected as to provide that the molecular weight attributable to R 1 equals 10 to 80 percent of the molecular weight attributable to the entire molecule.
Claim 2
Dependent Claim
258 words
A material having the formula RO--(C.sub.6 H.sub.10 O.sub.5).sub.n --R.sup.1 in which (C 6 H 10 O 5 ) represents a glycosyl unit; n is an integer from 1 to 20; R is selected from the group consisting of 2-hydroxypropyl, 2-hydroxyethyl, glyceryl, methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, methoxethyl, and ethoxyethyl, said R being joined to a glycosyl unit through an acetal linkage; R 1 is selected from the group consisting of --OCH.sub.2 --CHOH--R.sup.2, --och.sub.2 --choh-ch.sub.2 or.sub.3, ##STR4## and --O--M--O--(C.sub.6 H.sub.10 O.sub.5).sub.n --OR; R 2 is an alkyl group containing 6 to 18 carbon atoms; R 3 is an alkyl group containing 6 to 18 carbon atoms; R 4 is selected from the group consisting of methyl and ethyl; R 5 is an alkyl group containing 1 to 6 carbon atoms; R 6 is an alkyl group containing 4 to 20 carbon atoms; p is an integer of from 3 to 20; q is an integer of from 0 to 20; M is a hydrophobic chain of 6 to 40 units selected from the group consisting of oxypropylene and oxypropylene-oxyethylene units wherein the oxypropylene content of said hydrophobic chain is from about 75 to 100 weight percent and the oxyethylene content is from 0 to 25 weight percent; and R 1 , r 2 , r 3 , r 4 , r 5 , r 6 , m, p and q are so selected as to provide that the molecular weight attributable to R 1 equals 10 to 80 percent of the molecular weight attributable to the entire molecule.
Claim 3
Dependent Claim
47 words
A material according to claim 1, wherein R 1 is selected from the group consisting of --OCH.sub.2 --CHOH--R.sup.2 and --OCH.sub.2 --CHOH--CH.sub.2 OR.sup.3, R 2 is an alkyl group containing 6 to 18 carbon atoms; and R 3 is an alkyl group containing 6 to 18 carbon atoms.
Claim 4
Dependent Claim
10 words
A material according to claim 1, where R is 2-hydroxypropyl.
Claim 5
Dependent Claim
10 words
A material according to claim 1, where R is 2-hydroxyethyl.
Claim 6
Dependent Claim
10 words
A materia according to claim 1, where R is glyceryl.
Claim 7
Dependent Claim
29 words
A material according to claim 1, where R is a lower alkyl radical containing 1 to 4 carbon atoms, said alkyl radical being a remainder of a non-tertiary alcohol.
Claim 8
Dependent Claim
45 words
A material according to claim 1, where R 1 is ##STR5## R 4 is selected from the group consisting of methyl and ethyl; R 5 is an alkyl group containing 1 to 6 carbon atoms; and p is an integer of from 3 to 20.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |