Process solution for polymer processing
The present disclosure relates to a process solution for polymer processing, containing a polar aprotic solvent, a fluorine-based compound, and a sulfur-containing compound. The process solution for polymer processing may have excellent storage stability and minimize damage to the metal layer while improving an ability to remove the adhesive polymer remaining on a circuit surface of a semiconductor wafer.
1 . A process solution for polymer processing, comprising a polar aprotic solvent, a fluorine-based compound, and a sulfur-containing compound, and water,
wherein the process solution has a water content of less than 4% by weight based on a total weight of the process solution,
wherein the polar aprotic solvent comprises one or more selected from the group consisting of ketone-based, acetate-based, amide-based, pyridine-based, morpholine-based, pyrrolidone-based, urea-based, phosphate-based, nitrile-based, carbonate-based, oxazolidone-based, piperazine-based, and furan-based solvents,
wherein the fluorine-based compound comprises one or more compounds selected from the group consisting of alkylammonium fluoride, alkylphosphonium fluoride, and alkylsulfonium fluoride,
wherein the sulfur-containing compound comprises one or more compounds represented by any one of the following Formulas 1-1 to 3:
R 1 —SH [Formula 1-1]
R 1 —S—S—R 1 [Formula 1-2]
wherein R 1 is a linear or branched alkyl group having 3 to 12 carbon atoms unsubstituted or substituted with a thiol group, a cyclic hydrocarbon group having 3 to 12 carbon atoms unsubstituted or substituted with a thiol group or halogen, and the halogen is fluorine, chlorine, bromine, or iodine,
wherein R 2 to R 4 and R 6 are each independently a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an unsaturated hydrocarbon group having 2 to 5 carbon atoms including a double bond, and R 5 is a direct linkage or an alkylene group having 1 to 5 carbon atoms,
wherein the compound represented by Formula 2 is one or more selected from the group consisting of 2-(trimethylsilyl)ethanethiol, trimethyl(2-methylsulfanylethyl)silane, (3-mercaptopropyl)methyldimethoxysilane, and (ethylthio)trimethylsilane, and
where R 7 and R 8 are connected to each other to form an unsubstituted or substituted alicyclic or aromatic monocyclic or polycyclic ring, wherein the monocyclic or polycyclic ring comprises one or more hetero atoms selected from nitrogen (N), oxygen (O), or sulfur (S), and
wherein the compound represented by Formula 3 is one or more selected from the group consisting of 2-amino-5-mercapto-1,3,4-thiadiazole and 2-mercaptobenzoxazole.
2 . The process solution for polymer processing of claim 1 , wherein the compound represented by Formula 1-1 is one or more selected from the group consisting of propane-1-thiol, butane-1-thiol, pentane-1-thiol, hexane-1-thiol, heptane-1-thiol, octane-1-thiol, decane-1-thiol, dodecane-1-thiol, 2-methylpropane-1- thiol, 2-methylpropane-2-thiol, 3-methyl-2-butanethiol, 3-methyl-1-butanethiol, 2-ethyl-1-hexanethiol, 1,3-propanedithiol, cyclopentanethiol, cyclohexanethiol, phenylmethanethiol, 2-phenylethanethiol, 4-(tert-butyl)phenylmethanethiol, and furfurylmercaptan.
3 . The process solution for polymer processing of claim 1 , wherein the compound represented by Formula 1-2 is one or more selected from the group consisting of diethyldisulfide, dipropyldisulfide, diisopropyldisulfide, diisoamyldisulfide, diamyldisulfide, dibutyldisulfide, diisobutyldisulfide, di-tert-butyldisulfide, methylpropyldisulfide, diphenyldisulfide, didodecyldisulfide, bis(1,1,3,3-tetramethylbutyl)disulfide, and di-tert-dodecyldisulfide.
4 . The process solution for polymer processing of claim 1 , wherein the alkylammonium fluoride comprises a compound represented by the following Formula 4-1 or 4-2:
wherein R 9 to R 12 are each independently an alkyl group having 3 to 10 carbon atoms,
wherein R 13 to R 15 are each independently an alkyl group having 1 to 10 carbon atoms.
5 . The process solution for polymer processing of claim 1 , wherein the alkylphosphonium fluoride comprises a compound represented by the following Formula 5:
wherein R 16 to R 19 are each independently an aliphatic hydrocarbon having 1 to 22 carbon atoms or an aromatic hydrocarbon having 6 to 20 carbon atoms.
6 . The process solution for polymer processing of claim 1 , wherein the alkylsulfonium fluoride comprises a compound represented by the following Formula 6:
wherein R 20 to R 22 are each independently an aliphatic hydrocarbon having 1 to 22 carbon atoms or an aromatic hydrocarbon having 6 to 20 carbon atoms.
7 . The process solution for polymer processing of claim 1 , wherein the process solution for polymer processing comprises:
66 to 99.89% by weight of the polar aprotic solvent;
0.1 to 20% by weight of the fluorine-based compound; and
0.01 to 10% by weight of the sulfur-containing compound, based on the total weight of the composition.
8 . The process solution for polymer processing of claim 1 , wherein the process solution for polymer processing is configured to remove a silicone-based polymer.