Hydrochlorofluoroolefins and methods of using same

Patent metadata

Field	Value
Publication number	US-11773352-B2
Application number	US-201917416830-A
Country	US
Kind code	B2
Filing date	Dec 20, 2019
Priority date	Dec 26, 2018
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A composition including a compound having structural formula (I): Rf is a linear or branched perfluoroalkyl group having 1-3 atoms; n is 0-2; x is 1-3; and Rf′ and Rf″ are (i) independently, a linear or branched perfluoroalkyl group having 1-8 carbon atoms; or (ii) are bonded together to form a ring structure having 4-8 carbon atoms. The composition further includes a hydrocarbon contaminant.

First claim

What is claimed is:

1. A composition comprising:
a compound having structural formula (I):

where R f is a linear or branched perfluoroalkyl group having 1-3 atoms; n is 0-2; x is 1-3; and R f ′ and R f ″ are (i) independently, a linear or branched perfluoroalkyl group having 1-8 carbon atoms; or (ii) are bonded together to form a ring structure having 4-8 carbon atoms;
with the provisos that:
when n is 0, then x is 3;
when n is 1 then x is 2; and
when n is 2 then x is 1; and

a hydrocarbon contaminant.

2. The composition of claim 1 , wherein the hydrocarbon contaminant comprises a hydrocarbon having the formula C n H 2n+2 , where n is greater than 5.

3. The composition of claim 2 , wherein the compound having structural formula (I) is present in the composition at an amount of at least 25% by weight based on the total weight of the composition.

4. The composition of claim 2 , wherein the compound having structural formula (I) is present in the composition at an amount of at least 50% by weight based on the total weight of the composition.

5. The composition of claim 2 , wherein the hydrocarbon contaminant is present in the composition at an amount of between 0.0001% and 20% by weight, based on the total weight of the compounds of structural formula (I) in the post-clean composition.

6. The composition of claim 1 , wherein the composition further comprises a co-solvent.

7. The composition of claim 6 , wherein said co-solvent comprises alcohols, ethers, alkanes, alkenes, haloalkenes, perfluorocarbons, perfluorinated tertiary amines, perfluoroethers, cycloalkanes, esters, ketones, oxiranes, aromatics, haloaromatics, siloxanes, hydrochlorocarbons, hydrochlorofluorocarbons, hydrofluorocarbons, hydrofluoroolefins, hydrochloroolefins, hydrochlorofluoroolefins, hydrofluoroethers, or mixtures thereof.

8. The composition of claim 1 , wherein the composition further comprises a surfactant.

9. The composition of claim 8 , wherein the composition comprises from 0.1 to 5 percent by weight of the surfactant, based on the total weights of the compound having structural formula (I) and the surfactant.

10. The composition of claim 8 , wherein the surfactant comprises a nonionic surfactant comprising an ethoxylated alcohol, an ethoxylated alkylphenol, an ethoxylated fatty acid, an alkylaryl sulfonate, a glycerolester, an ethoxylated fluoroalcohol, a fluorinated sulfonamide, or mixtures thereof.

11. A process for removing contaminants from a substrate, the process comprising the steps of:
contacting a substrate with a compound having structural formula (I):

where R f is a linear or branched perfluoroalkyl group having 1-3 atoms; n is 0-2; x is 1-3; and R f ′ and R f ″ are (i) independently, a linear or branched perfluoroalkyl group having 1-8 carbon atoms; or (ii) are bonded together to form a ring structure having 4-8 carbon atoms;
with the provisos that
when n is 0, then x is 3;
when n is 1 then x is 2; and
when n is 2 then x is 1; and

wherein the contaminant comprises a hydrocarbon.

12. The process of claim 11 , wherein the hydrocarbon contaminant comprises a hydrocarbon having the formula C n H 2n+2 , where n is greater than 5.

Assignees

• 3M Innovative Properties Company

Inventors

• Smith Sean M
• Bulinski Michael J
• Costello Michael G
• Coughlin Forrest A
• Ren Hui
• Qiu Zai-Ming

Classifications

• C11D7/5018 Primary

  Halogenated solvents · CPC title

• C07C43/17

  containing halogen · CPC title

• C07C43/172

  containing rings other than six-membered aromatic rings · CPC title

• C11D7/28 Primary

  containing halogen · CPC title

• C11D11/0047

  Chemistry & Metallurgy · mapped topic