US4082689A
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Antifoam compositions and process with bis-α-hydroxyamine derivatives
Assignee: Henkel AG and Co KGaA
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Filing: 1976-12-20
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Granted: 1978-04-04
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Expires: 1996-12-20
Abstract
Abstract Antifoam compositions on the basis of a bis-α-hydroxyamine derivative of the formula ##STR1## wherein A is --NHCO--R 3 --CONH-- or --NHCONH--R 3 --NHCONH--, R 1 and R 2 are H or alkyl having 1 to 22 carbon atoms and the sum of the carbon atoms in R 1 and R 2 , in each case, is from 8 to 22, R 3 is alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having 1 to 3 carbon atoms in the alkyl or a polysiloxane of the formula ##STR2## WHERE N = 2 OR 3 AND P = 2 TO 20; AS WELL AS THE PROCESS OF CONTROLLING FOAM IN A FOAMABLE LIQUID BY INTRODUCING THEREIN AN ANTIFOAM EFFECTIVE AMOUNT OF SAID BIS-α-HYDROXYAMINE DERIVATIVE. The antifoam bis-α-hydroxyamine derivatives are effective antifoam agents for most industrial purposes and are suitable for use in oil and latex paints.
Inventors
- 👤 Rudi Heyden
- 👤 Adolf Asbeck
- 👤 Michael Eckelt
- 👤 Manfred Petzold
- 👤 Gunter Uphues
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:55
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C; C09; C09D; C09D7/00; C09D7/40; C09D7/47
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
155 words
A process for the control of foam in a foamable liquid comprising adding to said foamable liquid an antifoam effective amount of a bis-α-hydroxyamine derivative of the formula ##STR13## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR14## where n is an integer from 2 to 3 and p is an integer from 2 to 20.
Claim 2
Dependent Claim
155 words
A process for the control of foam in a foamable liquid comprising adding to said foamable liquid an antifoam effective amount of a bis-α-hydroxyamine derivative of the formula ##STR13## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR14## where n is an integer from 2 to 3 and p is an integer from 2 to 20.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein A is --NHCONH--R 3 --NHCONH-- and R 3 is alkylene having 2 to 10 carbon atoms.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein A is --NHCO--R 3 --CONH-- and R 3 is said polysiloxane.
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein A is --NHCO--R 3 --CONH-- and R 3 is alkylene having 2 to 10 carbon atoms.
Claim 6
Dependent Claim
41 words
The process of claim 1 wherein said bis-α-hydroxyamine derivative is in the form of a dispersion in an organic liquid selected from the group consisting of a mineral oil having a boiling point in excess of 140° C and oleyl alcohol.
Claim 7
Dependent Claim
150 words
An antifoam composition of a liquid solution or dispersion containing from 1% to 25% by weight of a bis-α-hydroxyamine derivative of the formula ##STR15## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR16## where n is an integer from 2 to 3 and p is an integer from 2 to 20.
Claim 8
Dependent Claim
150 words
An antifoam composition of a liquid solution or dispersion containing from 1% to 25% by weight of a bis-α-hydroxyamine derivative of the formula ##STR15## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR16## where n is an integer from 2 to 3 and p is an integer from 2 to 20.
Claim 9
Dependent Claim
23 words
The antifoam composition of claim 6 wherein A is --NHCONH--R 3 --NHCONH-- and R 3 is alkylene having 2 to 10 carbon atoms.
Claim 10
Dependent Claim
17 words
The antifoam composition of claim 6 wherein A is --NHCO--R 3 --CONH-- R 3 is said polysiloxane.
Claim 11
Dependent Claim
23 words
The antifoam composition of claim 6 wherein A is --NHCO--R 3 --CONH-- and R 3 is alkylene having 2 to 10 carbon atoms.
Claim 12
Dependent Claim
35 words
The antifoam composition of claim 6 wherein said bis-α-hydroxyamine derivative is in the form of a solution or fine-particulate dispersion in an aqueous or organic liquid having a melting point of less than 5° C.
Claim 13
Dependent Claim
26 words
The antifoam composition of claim 10 wherein said organic liquid is a mineral oil having a boiling point in excess of 140° C, or oleyl alcohol.
Claim 14
Dependent Claim
22 words
The antifoam composition of claim 6 wherein said bis-α-hydroxyamine derivative is present in an amount of from 5% to 15% by weight.
Claim 15
Dependent Claim
216 words
A process for the production of a dispersion of a bis-α-hydroxyamine derivative of the formula ##STR17## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR18## where n is an integer from 2 to 3 and p is an integer from 2 to 20 in an organic liquid having a melting point of less than 5° C and a boiling point above the melting point of said bis-α-hydroxyamine derivative, said organic liquid being a solvent for said bis-α-hydroxyamine derivative when melted which consists of the steps of heating a mixture of said organic liquid and from 1% to 25% by weight of said bis-α-hydroxyamine derivative to above its melting point and then cooling the mixture under extensive agitation.
Claim 16
Dependent Claim
216 words
A process for the production of a dispersion of a bis-α-hydroxyamine derivative of the formula ##STR17## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR18## where n is an integer from 2 to 3 and p is an integer from 2 to 20 in an organic liquid having a melting point of less than 5° C and a boiling point above the melting point of said bis-α-hydroxyamine derivative, said organic liquid being a solvent for said bis-α-hydroxyamine derivative when melted which consists of the steps of heating a mixture of said organic liquid and from 1% to 25% by weight of said bis-α-hydroxyamine derivative to above its melting point and then cooling the mixture under extensive agitation.
Claim 17
Dependent Claim
133 words
A bis-α-hydroxyamine derivative of the formula ##STR19## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR20## where n is an integer from 2 to 3 and p is an integer from 2 to 20.
Claim 18
Dependent Claim
133 words
A bis-α-hydroxyamine derivative of the formula ##STR19## wherein A is a member selected from the group consisting of --NHCO--R 3 --CONH-- and --NHCONH--R 3 --NHCONH--, R 1 and R 2 are members selected from the group consisting of hydrogen and alkyl having from 1 to 22 carbon atoms, at least one of R 1 and R 2 being alkyl and the sum of the carbon atoms in R 1 + R 2 is from 8 to 22, and R 3 is a bivalent member selected from the group consisting of alkylene having 2 to 10 carbon atoms, phenylene, alkylphenylene having from 1 to 3 carbon atoms in the alkyl and polysiloxane of the formula ##STR20## where n is an integer from 2 to 3 and p is an integer from 2 to 20.
Claim 19
Dependent Claim
23 words
The bis-α-hydroxyamine derivative of claim 14 wherein A is --NHCONH--R 3 --NHCONH-- and R 3 is alkylene having 2 to 10 carbon atoms.
Claim 20
Dependent Claim
19 words
The bis-α-hydroxyamine derivative of claim 14 wherein A is -- NHCO--R 3 --CONH-- and R 3 is said polysiloxane.
Claim 21
Dependent Claim
22 words
The bis-α-hydroxyamine derivative of claim 14 wherein A is --NHCO--R 3 --CONH-- R 3 is alkylene having 2 to 10 carbon atoms.
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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |