US4294729A
Expired / Lapsed
US
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Composition containing alcohol and use thereof for epoxy removal
Assignee: International Business Machines Corp
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Filing: 1979-12-17
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Granted: 1981-10-13
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Expires: 1999-12-17
Abstract
Abstract Cured epoxy compositions are removed from substrates by employing compositions containing an organic cyclic alcohol and a surface-active agent.
Inventors
- 👤 Peter Bakos
- 👤 Russell E. Darrow
- 👤 Joseph Funari
- 👤 Richard M. Poliak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
C; C09; C09D; C09D9/00; C09D9/005; H; H05; H05K; H05K3/00; H05K3/22; H05K3/28; H05K3/288
Claims Analysis
Total Claims: 46
Claim 1
Independent Claim
65 words
A removal composition capable of removing a cured epoxy polymer from a substrate consisting essentially of at least about 75% by weight based upon the weight of the composition of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said hydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring or terpene ring, and a minor amount of an ionic fluorocarbon surface agent.
Claim 2
Dependent Claim
65 words
A removal composition capable of removing a cured epoxy polymer from a substrate consisting essentially of at least about 75% by weight based upon the weight of the composition of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said hydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring or terpene ring, and a minor amount of an ionic fluorocarbon surface agent.
Claim 3
Dependent Claim
18 words
The removal composition of claim 1 wherein said alcohol boils about 130° C. and is a monohydric alcohol.
Claim 4
Dependent Claim
21 words
The removal composition of claim 1 wherein said alcohol is monocyclic and contains 5 or 6 carbon atoms in the ring.
Claim 5
Dependent Claim
27 words
The removal composition of claim 1 wherein said alcohol is monocyclic, monohydric, contains 5 or 6 carbon atoms in the ring, and boils above about 130° C.
Claim 6
Dependent Claim
27 words
The removal composition of claim 1 wherein said alcohol is selected from the group of benzyl alcohol, cyclopentanol, cyclohexanol, diphenylcarbinol, α-phenylethanol, β-phenylethanol, terpene alcohol, and mixtures thereof.
Claim 7
Dependent Claim
12 words
The removal composition of claim 1 wherein said alcohol is benzyl alcohol.
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein said fluorocarbon surfactant is anionic.
Claim 9
Dependent Claim
24 words
The composition of claim 7 wherein said fluorocarbon surfactant is a perfluorocarboxylic acid, a fluorocarbonsulfonamidoalkanol, a sulfate thereof, a phosphonate thereof, or mixtures thereof.
Claim 10
Dependent Claim
130 words
The removal composition of claim 1 wherein said fluorocarbon surface-active agent is at least one compound represented by one of the following formulas: (A) R f SO 2 N(R')RCH 2 OH; (B) R f SO 2 N(R')RCH 2 OSO 3 H; (C) R f SO 2 N(R')RCH 2 OSO 3 M; (D) R f SO 2 N(R')RCH 2 OP(OH) 2 or metal salts thereof or ammonium salts thereof; and (E) CF 3 [CF 2 ] t COOH; wherein R f is a perfluoroalkyl group containing 4 to 12 carbon atoms; R is a alkylene bridging group containing 1 to 12 carbon atoms; R' is hydrogen or an alkyl group containing 1 to 6 carbon atoms; M is a metal or ammonium; and t is an integer of 4 to 11.
Claim 11
Dependent Claim
49 words
The composition of claim 1 wherein the surface-active agent is one or more of the following: (A) C 5 F 11 COOH; (B) C 9 F 19 COOH; and (C) CF 3 [CH 2 ] 7 SO 2 N[CH 2 CH 3 ]CH 2 CH 2 OP[OH] 2 .
Claim 12
Dependent Claim
24 words
The composition of claim 1 wherein the surface-active agent is present in an amount of at least about 0.05% by weight of the composition.
Claim 13
Dependent Claim
20 words
The composition of claim 1 wherein the surface-active agent is present in an amount of at least 0.1% by weight.
Claim 14
Dependent Claim
21 words
The composition of claim 1 wherein the surface-active agent is present in an amount of about 15% by weight or less.
Claim 15
Dependent Claim
30 words
The composition of claim 1 wherein the surface-active agent is present in an amount of about 0.1 to about 2.5% by weight based upon the total weight of the composition.
Claim 16
Dependent Claim
39 words
The removal composition of claim 1, 5, 6, 8, 9 or 10 which contains a minor amount of an organic solvent which is at least one of a cyclocompound, or contains a hydroxyl group, or contains a keto group.
Claim 17
Dependent Claim
23 words
The composition of claim 15 wherein said organic solvent is selected from the group of cyclohexanone, phenol, xylene, glycerine, catechol, and amine alcohols.
Claim 18
Dependent Claim
11 words
The composition of claim 15 wherein said organic solvent is triethanolamine.
Claim 19
Dependent Claim
11 words
The composition of claim 15 wherein said organic solvent is cyclohexanone.
Claim 20
Dependent Claim
97 words
A removal composition capable of removing a cured epoxy polymer from a substrate consisting essentially of at least about 75% by weight based upon the weight of the composition of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said hydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring or terpene ring, a minor amount of an organic solvent boiling above about 110° C., and a minor amount of a surface active agent, wherein said organic solvent is at least one of a cyclocompound, or contains a hydroxyl group, or contains a keto group.
Claim 21
Dependent Claim
97 words
A removal composition capable of removing a cured epoxy polymer from a substrate consisting essentially of at least about 75% by weight based upon the weight of the composition of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said hydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring or terpene ring, a minor amount of an organic solvent boiling above about 110° C., and a minor amount of a surface active agent, wherein said organic solvent is at least one of a cyclocompound, or contains a hydroxyl group, or contains a keto group.
Claim 22
Dependent Claim
23 words
The composition of claim 19 wherein said organic solvent is selected from the group of cyclohexanone, phenol, xylene, glycerine, catechol, and amine alcohols.
Claim 23
Dependent Claim
11 words
The composition of claim 19 wherein said organic solvent is triethanolamine.
Claim 24
Dependent Claim
11 words
The composition of claim 19 wherein said organic solvent is cyclohexanone.
Claim 25
Dependent Claim
44 words
The composition of claim 19 wherein the organic solvent is present in an amount of at least 5% by weight, and said surface active agent is present in an amount of at least 0.05% by weight based upon the total weight of the composition.
Claim 26
Dependent Claim
11 words
The composition of claim 19 wherein said alcohol is benzyl alcohol.
Claim 27
Dependent Claim
78 words
A process for removing a cured epoxy composition from a substrate which comprises contacting the substrate containing said epoxy composition to be removed with a removal composition consisting essentially of at least about 75% by weight based upon the weight of the composition of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said hydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring or terpene ring, and a minor amount of a surface active agent.
Claim 28
Dependent Claim
78 words
A process for removing a cured epoxy composition from a substrate which comprises contacting the substrate containing said epoxy composition to be removed with a removal composition consisting essentially of at least about 75% by weight based upon the weight of the composition of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said hydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring or terpene ring, and a minor amount of a surface active agent.
Claim 29
Dependent Claim
12 words
The process of claim 25 wherein said substrate is a ceramic substrate.
Claim 30
Dependent Claim
14 words
The process of claim 26 wherein said ceramic substrate is an integrated circuit module.
Claim 31
Dependent Claim
66 words
A process for removing a cured epoxy composition from a ceramic substrate which comprises contacting the substrate containing said epoxy composition to be removed with a composition containing a major amount of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said cyclohydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring, or terpene ring, and a minor amount of a surface active agent.
Claim 32
Dependent Claim
66 words
A process for removing a cured epoxy composition from a ceramic substrate which comprises contacting the substrate containing said epoxy composition to be removed with a composition containing a major amount of an organic cyclohydrocarbyl alcohol boiling above about 110° C., wherein said cyclohydrocarbyl is selected from the group of aromatic ring, cycloaliphatic ring, or terpene ring, and a minor amount of a surface active agent.
Claim 33
Dependent Claim
14 words
The process of claim 28 wherein said ceramic substrate is an integrated circuit module.
Claim 34
Dependent Claim
29 words
The process of claim 25, 28 or 29 wherein said alcohol is selected from the group of benzyl alcohol, cyclopentanol, cyclohexanol, diphenylcarbinal, α-phenylethanol, β-phenylethanol, terpene alcohol, and mixtures thereof.
Claim 35
Dependent Claim
14 words
The process of claim 25, 28 or 29 wherein said alcohol is benzyl alcohol.
Claim 36
Dependent Claim
18 words
The process of claim 25, 28 or 29 wherein said surface-active agent is an ionic fluorocarbon surface-active agent.
Claim 37
Dependent Claim
11 words
The process of claim 32 wherein said fluorocarbon surfactant is anionic.
Claim 38
Dependent Claim
24 words
The process of claim 33 wherein said fluorocarbon surfactant is a perfluorocarboxylic acid, a fluorocarbonsulfonamidoalkanol, a sulfate thereof, a phosphonate thereof, or mixtures thereof.
Claim 39
Dependent Claim
129 words
The process of claim 32 wherein said fluorocarbon surface-active agent is at least one compound represented by one of the following formulas: (A) R f SO 2 N(R')RCH 2 OH; (B) R f SO 2 N(R')RCH 2 OSO 3 H; (C) R f SO 2 N(R')RCH 2 OSO 3 M; (D) R f SO 2 N(R')RCH 2 OP(OH) 2 or metal salts thereof of ammonium salts thereof; and (E) CF 3 [CF 2 ] t COOH; wherein R f is a perfluoroalkyl group containing 4 to 12 carbon atoms; R is an alkylene bridging group containing 1 to 12 carbon atoms; R' is hydrogen or an alkyl group containing 1 to 6 carbon atoms; M is a metal or ammonium; and t is an integer of 4 to 11.
Claim 40
Dependent Claim
49 words
The process of claim 32 wherein the surface-active agent is one or more of the following: (A) C 5 F 11 COOH; (B) C 9 F 19 COOH; and (C) CF 3 [CF 2 ] 7 SO 2 N[CH 2 CH 3 ]CH 2 CH 2 OP[OH] 2 .
Claim 41
Dependent Claim
33 words
The process of claim 25, 28 or 29 wherein the surface-active agent is present in an amount of about 0.1 to about 2.5% by weight based upon the total weight of the composition.
Claim 42
Dependent Claim
43 words
The process of claim 25, 28 or 29 wherein said removal composition contains a minor amount of an organic solvent boiling above about 110° C. which is at least one of a cyclocompound or contains a hydroxyl group or contains a keto group.
Claim 43
Dependent Claim
23 words
The process of claim 38 wherein said organic solvent is selected from the group of cyclohexanone, phenol, xylene, glycerine, catechol, and amine alcohols.
Claim 44
Dependent Claim
11 words
The process of claim 38 wherein said organic solvent is triethanolamine.
Claim 45
Dependent Claim
11 words
The process of claim 38 wherein said organic solvent is cyclohexanone.
Claim 46
Dependent Claim
18 words
The process of claim 32, 33, 34, 35, 36, 26 or 27 wherein said alcohol is benzyl alcohol.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |