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USRE29243E Expired / Lapsed US ⏱️ 0.0 years remaining

Polyalkyleneglycol ethers of hydroxyalkylmercaptans and process

Assignee: Henkel AG and Co KGaA
•
Filing: 1975-05-19
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Granted: 1977-05-31
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Expires: 1995-05-19
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Abstract

Abstract Polyalkylene glycol ethers of β-hydroxymercaptans of the formula ##STR1## wherein R 1 is a member selected from the group consisting of alkyl having from 1 to 22 carbon atoms, alkoxyalkyl having from 2 to 22 carbon atoms, haloalkyl having from 1 to 22 carbon atoms, cycloalkylalkyl having from 6 to 22 carbon atoms and alkenyl having from 3 to 22 carbon atoms, R 2 and R 3 are members selected from the group consisting of hydrogen, and R 1 and when taken together alkylene having from 3 to 4 carbon atoms, with the proviso that the sum of the carbon atoms in R 1 , R 2 and R 3 is from 4 to 22; A is a bivalent member having from 2 to 4 carbon atoms selected from the group consisting of alkylene, haloalkylene and hydroxyalkylene; n is an integer from 0 to 50; m is an integer from 1 to 50; and the sum of n and m is an integer from 1 to 50. The compounds have surface-active properties and are useful per se or as intermediates.

Inventors

  • 👤 Wilfried Umbach
  • 👤 Rainer Mehren
  • 👤 Werner Stein

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 12:17
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/002; C07; C07C; C07C323/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 119 words
Polyalkylene glycol ethers of β-hydroxymercaptans of the formula ##STR5## wherein R 4 is an alkyl having from 1 to 22 carbon atoms, R 5 and R 6 are members selected from the group consisting of hydrogen and alkyl having from 1 to 21 carbon atoms, with the proviso that the sum of the carbon atoms in R 4 , R 5 and R 6 is from 4 to 22; Y is alkylene having from 2 to 4 carbon atoms; n is an integer from .[.0 to 50.]. .Iadd.1 to 30.Iaddend.; m is an integer from .[.1 to 50.]. .Iadd.2 to 30.Iaddend.; and the sum of n and m is an integer from .[.1 to 50.]. .Iadd.4 to 30.Iaddend. .
Claim 2
Dependent Claim 119 words
Polyalkylene glycol ethers of β-hydroxymercaptans of the formula ##STR5## wherein R 4 is an alkyl having from 1 to 22 carbon atoms, R 5 and R 6 are members selected from the group consisting of hydrogen and alkyl having from 1 to 21 carbon atoms, with the proviso that the sum of the carbon atoms in R 4 , R 5 and R 6 is from 4 to 22; Y is alkylene having from 2 to 4 carbon atoms; n is an integer from .[.0 to 50.]. .Iadd.1 to 30.Iaddend.; m is an integer from .[.1 to 50.]. .Iadd.2 to 30.Iaddend.; and the sum of n and m is an integer from .[.1 to 50.]. .Iadd.4 to 30.Iaddend. .
Claim 3
Dependent Claim 67 words
The polyalkylene glycol ethers of claim 1 wherein R 5 and R 6 are hydrogen. .[.3. The polyalkylene glycol ethers of claim 1 wherein the sum of n and m is an integer from 4 to 30 and n is an integer from 1 to 30 and m is an integer from 2 to 30..]. .Iadd.4. The polyalkylene glycol ethers of claim 1 wherein Y is ethylene..Iaddend.

References Cited (Backward Citations)

US2626924A Cited
US2900368A Cited
US3335189A Cited
US3427248A Cited
US3758595A Cited
US3662004A Cited
US3661851A Cited
US3662003A Cited
US3708543A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-05-30 1980-11-29 1981-05-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-05-30 1984-11-29 1985-05-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-05-30 1988-11-29 1989-05-31 $7700.00 Window Closed / Lapsed

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