US3875197A
Expired / Lapsed
US
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Amido-methyl-polyglycol formals
Assignee: Hoechst AG
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Filing: 1972-07-31
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Granted: 1975-04-01
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Expires: 1992-07-31
Abstract
Abstract R2 represents hydrogen or one of the radicals WHEREIN R represents an alkyl or alkenyl radical containing 8 to 21 carbon atoms, R1 represents hydroxyl or the radical Amido-methyl-polyglycol-formals of the formula
Inventors
- 👤 Heiss Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:17
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/3332; C08G65/33324; C07; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/16; C07C275/00; C07C275/04; C07C275/06; C07C275/10; C08G4/00; D; D06; D06M; D06M13/00; D06M13/322; D06M13/372; D06M13/402; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
6 words
AN AMIDO-METHYL-POLYGLYCOL FORMAL OF THE FORMULA
Claim 2
Dependent Claim
6 words
AN AMIDO-METHYL-POLYGLYCOL FORMAL OF THE FORMULA
Claim 3
Dependent Claim
18 words
An amido-methyl-polyglycolformal according to claim 1 wherein m is 2 to 10 and x is 1 to 10.
Claim 4
Dependent Claim
11 words
An amido-methyl-polyglycolformal according to claim 1 wherein R1 is the radical
Claim 5
Dependent Claim
10 words
An amido-methyl-polyglycolformal according to claim 3 wherein R is C17H35.
Claim 6
Dependent Claim
10 words
An amido-methyl-polyglycolformal according to claim 3 wherein R is C17H33.
Claim 7
Dependent Claim
10 words
An amido-methyl-polyglycolformal according to claim 3 wherein R is C21H43.
Claim 8
Dependent Claim
58 words
A process for making an amido-methyl-glycol formal which comprises mixing an alkyl or alkylene amide of 8 to 21 carbon atoms, formaldehyde and a glycol formal containing from 1 to 20 ethoxy units and from 1 to 20 methoxy units, and heating the mixture at an elevated temperature to remove water therefrom and form said amido-methyl glycol formal.
Claim 9
Dependent Claim
58 words
A process for making an amido-methyl-glycol formal which comprises mixing an alkyl or alkylene amide of 8 to 21 carbon atoms, formaldehyde and a glycol formal containing from 1 to 20 ethoxy units and from 1 to 20 methoxy units, and heating the mixture at an elevated temperature to remove water therefrom and form said amido-methyl glycol formal.
Claim 10
Dependent Claim
18 words
A process according to claim 7 wherein the mixture is heated at a temperature of 100* to 150*C.
Claim 11
Dependent Claim
29 words
A process according to claim 7 wherein the mixture contains from 1 to 2 moles of formaldehyde and up to 2 moles of glycol formal per mole of amide.
Claim 12
Dependent Claim
23 words
A process according to claim 7 wherein said mixture is maintained at a pH of 1 to 6 while it is being heated.
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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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |