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US5472830A Expired / Lapsed US ⏱️ 0.0 years remaining

Non-corrosion photoresist stripping composition

Assignee: Olin Microelectronic Chemicals Inc
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Filing: 1994-04-18
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Granted: 1995-12-05
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Expires: 2014-04-18
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Abstract

Abstract A non-corrosive photoresist stripping composition containing: (a) 85-10% by weight of an organic polar solvent having a dipole moment of more than 3.5; (b) 10-40% by weight of selected amine compounds; (c) 5-30% by weight of selected amino acid having a hydroxyl group; and, optionally, (d) 0-20% by weight water.

Inventors

  • 👤 Kenji Honda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:06
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/32; G03F7/42; G03F7/422; G03F7/425

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 261 words
A resist stripper composition comprising: (a) from about 85 to about 10% by weight of an organic polar solvent having a dipole moment of more than 3.5; (b) from about 10 to about 40% by weight of an amine compound selected from the group consisting of compounds having the formula (I): ##STR5## wherein n and m are each independently an integer ranging from 1-5, inclusive; X is hydrogen, alkyl, or alkoxy group; Y is either --O-- or --NH--; and Z is hydrogen, --OH, or --NH 2 ; (c) from about 5 to about 30% by weight of an amino acid selected from the group consisting of compounds having the formula (II): ##STR6## wherein n is an integer ranging from 1-3; R 1 and R 2 are each independently selected from the group consisting of hydrogen and compounds having the formula (III): ##STR7## wherein R 5 , R 6 , and R 7 are each independently selected from hydrogen, --OH, --CH 2 OH, alkyl, alkoxy, phenyl, and mono-, di- or tri-hydroxy-substituted phenyl groups; and R 3 and R 4 are each independently selected from the group consisting of hydrogen and compounds having the formula (IV): ##STR8## wherein X', Y' and Z' are each independently selected from hydrogen, OH, --CH 2 OH, --CH 2 CH 2 OH, --CH 2 COOH, alkyl, or alkoxy group, and at least one of them is --OH or --CH 2 OH or --CH 2 CH 2 OH. (d) from about 0 to about 20% by weight of water all percents based on the weight of the stripper composition.
Claim 2
Dependent Claim 261 words
A resist stripper composition comprising: (a) from about 85 to about 10% by weight of an organic polar solvent having a dipole moment of more than 3.5; (b) from about 10 to about 40% by weight of an amine compound selected from the group consisting of compounds having the formula (I): ##STR5## wherein n and m are each independently an integer ranging from 1-5, inclusive; X is hydrogen, alkyl, or alkoxy group; Y is either --O-- or --NH--; and Z is hydrogen, --OH, or --NH 2 ; (c) from about 5 to about 30% by weight of an amino acid selected from the group consisting of compounds having the formula (II): ##STR6## wherein n is an integer ranging from 1-3; R 1 and R 2 are each independently selected from the group consisting of hydrogen and compounds having the formula (III): ##STR7## wherein R 5 , R 6 , and R 7 are each independently selected from hydrogen, --OH, --CH 2 OH, alkyl, alkoxy, phenyl, and mono-, di- or tri-hydroxy-substituted phenyl groups; and R 3 and R 4 are each independently selected from the group consisting of hydrogen and compounds having the formula (IV): ##STR8## wherein X', Y' and Z' are each independently selected from hydrogen, OH, --CH 2 OH, --CH 2 CH 2 OH, --CH 2 COOH, alkyl, or alkoxy group, and at least one of them is --OH or --CH 2 OH or --CH 2 CH 2 OH. (d) from about 0 to about 20% by weight of water all percents based on the weight of the stripper composition.
Claim 3
Dependent Claim 14 words
The stripper composition of claim 1 wherein said solvent (a) is a cyclic amide.
Claim 4
Dependent Claim 20 words
The stripper composition of claim 2 wherein said cyclic amide is selected from the group consisting of N-alkyl-2-pyrrolidone and 1,3-dialkyl-2-imidazolidinone.
Claim 5
Dependent Claim 13 words
The stripper composition of claim 1 wherein said amine (b) is an alkanolamine.
Claim 6
Dependent Claim 23 words
The stripper composition of claim 4 wherein said alkanolamine is selected from the group consisting of monoethanolamine, 2-(2-aminoethoxy) ethanol and 2-(2aminoethyl amino) ethanol.
Claim 7
Dependent Claim 41 words
The stripper composition of claim 1 wherein said amino acid is selected from the group consisting of: tricine, bicine, DL-homoserine, D-homoserine, L-homoserine, DL-threonine, D-allo-threonine, L-allo-threonine, D-threonine, L-threonine, DL-3-hydroxynorvaline, DL-metathroxine, DL-tyrosine, D-tyrosine, L-tyrosine, 3-(3,4-dihydroxyphenyl)-DL-alanine, 3-(3,4-dihydroxyphenyl)-L-alanine, 3-(2,4,5-trihydroxyphenyl)-DL-alanine, DL-alpha-methyltyrosine, L-alphamethytyrosine, (-)-3-(3,4-dihydroxyphenyl)-2-methyl-L-alanine, DL-threo-3phenylserine, and DL-threo-3,4-dihydroxyphenylserine.
Claim 8
Dependent Claim 22 words
The stripper composition of claim 6 wherein said amino acid is selected from the group consisting of tricine, bicine, 3-(2,4,5-trihydroxyphenyl)-DL-alanine, and DL-threo-3,4-dihydroxyphenylserine.

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Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-12-04 1999-06-05 1999-12-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-12-04 2003-06-05 2003-12-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-12-04 2007-06-05 2007-12-05 $7700.00 Window Closed / Lapsed

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