Patent US3968104A successfully refreshed from Google Patents.
US3968104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extremely low viscosity adducts of lactams with alcohols
Assignee: Bayer AG
•
Filing: 1973-11-14
•
Granted: 1976-07-06
•
Expires: 1993-11-14
Abstract
Abstract Adducts useful as solvents are prepared from lactams and an aliphatic, cycloaliphatic or araliphatic alcohol or thioalcohol. Solutions of the adducts in the lactam, alcohol or thioalcohol are also disclosed as well as a process for preparing the adducts and solutions thereof.
Inventors
- 👤 Kuno Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:01
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; A; A01; A01N; A01N25/00; A01N25/02; C08; C08F; C08F2/00; C08F2/04; C08F2/06; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/166; C08G18/168; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G59/00; C08G59/18; C08G59/40; C08G59/44; C08G59/448; C08G59/46; C08G69/00; C08G69/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
184 words
Adduct of a lactam selected from the group of epsilon-caprolactam, 1-N-methyl hexahydro-1,4-diazepin-3-one, propiolactam, butyrolactam, valerolactam and dodecalactam, with an alcohol selected from the group of methanol, ethanol, propanol, n-butanol, isopropanol, t-butanol, cyclohexanol, allyl alcohol, ethylene glycol monomethyl ether, benzyl alcohol, chloroethanol, fluoroethanol, trichloroethanol, trifluoroethanol, beta-hydroxypropylester of C 1-4 carboxylic acids, furfuryl alcohol, tetrahydrofurfuryl alcohol, n-butyl mercaptan, dodecyl mercaptan, mercaptoethanol, a hemiacetal of the foregoing alcohols with formaldehyde or chloral; ethylene glycol; diethylene glycol; thioglycol; a propane diol isomer; di- or tri-propylene glycol; glycerine, tri-methylol propane, hexane-1,6-diol or other isomer of hexane diol; hexahydroquinone; 1,4-bis-hydroxymethyl cyclohexane; terpin hydrate; mono-, di, tri- or tetra-methylol cyclohexanone; anhydroenneaheptiotol; phthalic or terephthalic acid diglycol ester; methylene glycol; a mono- or bis-hemiacetal of formaldehyde or chloral of any of the aforementioned polyhydroxyl compounds; n-methyl diethanolamine; bis hydroxyethyl cyclo-hexylamine; and bis-hydroxyethyl stearylamine, and an N-methylol derivative of valeorlactam, butyrolactam, caprolactam, propiolactam, N-butylethylurethan, N-methylol benzamide, N-hydroxymethyl naphthalimide, ethanolamine, N-methylethanol amine, cyclohexylethanolamine, oxethylated benzoic acid amide, hydroxyethyl acetamide, hydroxyethyl carbamic acid butyl ester, N,N-dimethylethanolamine, N,N-diethylethanolamine, and hydroazinoethanol, said adduct containing from 0.3 to 4 moles of said alcohol per mol of said lactam.
Claim 2
Dependent Claim
184 words
Adduct of a lactam selected from the group of epsilon-caprolactam, 1-N-methyl hexahydro-1,4-diazepin-3-one, propiolactam, butyrolactam, valerolactam and dodecalactam, with an alcohol selected from the group of methanol, ethanol, propanol, n-butanol, isopropanol, t-butanol, cyclohexanol, allyl alcohol, ethylene glycol monomethyl ether, benzyl alcohol, chloroethanol, fluoroethanol, trichloroethanol, trifluoroethanol, beta-hydroxypropylester of C 1-4 carboxylic acids, furfuryl alcohol, tetrahydrofurfuryl alcohol, n-butyl mercaptan, dodecyl mercaptan, mercaptoethanol, a hemiacetal of the foregoing alcohols with formaldehyde or chloral; ethylene glycol; diethylene glycol; thioglycol; a propane diol isomer; di- or tri-propylene glycol; glycerine, tri-methylol propane, hexane-1,6-diol or other isomer of hexane diol; hexahydroquinone; 1,4-bis-hydroxymethyl cyclohexane; terpin hydrate; mono-, di, tri- or tetra-methylol cyclohexanone; anhydroenneaheptiotol; phthalic or terephthalic acid diglycol ester; methylene glycol; a mono- or bis-hemiacetal of formaldehyde or chloral of any of the aforementioned polyhydroxyl compounds; n-methyl diethanolamine; bis hydroxyethyl cyclo-hexylamine; and bis-hydroxyethyl stearylamine, and an N-methylol derivative of valeorlactam, butyrolactam, caprolactam, propiolactam, N-butylethylurethan, N-methylol benzamide, N-hydroxymethyl naphthalimide, ethanolamine, N-methylethanol amine, cyclohexylethanolamine, oxethylated benzoic acid amide, hydroxyethyl acetamide, hydroxyethyl carbamic acid butyl ester, N,N-dimethylethanolamine, N,N-diethylethanolamine, and hydroazinoethanol, said adduct containing from 0.3 to 4 moles of said alcohol per mol of said lactam.
Claim 3
Dependent Claim
57 words
Adduct of a lactam selected from the group of epsilon-caprolactam, 1-N-methyl hexahydro-1,4-diazepin-3-one, propiolactam, butyrolactam, valerolactam and dodecalactam, with primary and secondary alcohols containing cyclic acetal group of formaldehyde, acetaldehyde or acrolein and alcohols with carbonyl or oxirane groups in the molecule, said adduct containing from 0.3 to 4 moles of said alcohol per mol of said lactam.
Claim 4
Dependent Claim
57 words
Adduct of a lactam selected from the group of epsilon-caprolactam, 1-N-methyl hexahydro-1,4-diazepin-3-one, propiolactam, butyrolactam, valerolactam and dodecalactam, with primary and secondary alcohols containing cyclic acetal group of formaldehyde, acetaldehyde or acrolein and alcohols with carbonyl or oxirane groups in the molecule, said adduct containing from 0.3 to 4 moles of said alcohol per mol of said lactam.
Claim 5
Dependent Claim
14 words
Adduct of claim 2 wherein the alcohol is selected from the group of ##EQU11##
Claim 6
Dependent Claim
36 words
Process for the preparation of the adduct of claim 1 which comprises contacting said lactam with from 0.3 to 4 mols, per mol of lactam, of said alcohol at a temperature of from 20° to 150°C.
Claim 7
Dependent Claim
20 words
Process of claim 4 wherein the amount of alcohol used is from 1 to 3 mols per mol of lactam.
Claim 8
Dependent Claim
20 words
Process of claim 4 wherein the amount of alcohol used is from 1.2 to 2 mols per mol of lactam.
Claim 9
Dependent Claim
12 words
Process of claim 4 wherein the temperature is from 40° to 110°C.
Claim 10
Dependent Claim
12 words
Process of claim 4 wherein the temperature is from 50° to 80°C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |