US4725457A
Expired / Lapsed
US
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Resinous compositions and their formulation into intumescent fire protective compositions
Assignee: PPG Industries Inc
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Filing: 1986-08-07
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Granted: 1988-02-16
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Expires: 2006-08-07
Abstract
Abstract A resinous composition is composed of the ungelled reaction product of (i) a diester of oxalic acid; (ii) a material containing one or more primary and/or secondary amino groups and one or more additional functional groups; and (iii) a material capable of coreacting with (i) or (ii). The resinous composition is useful in formulating intumescent fire protective compositions for fire protection of substrates.
Inventors
- 👤 Thomas A. Ward
- 👤 Karl F. Schimmel
- 👤 Lois C. Trautvetter
- 👤 Robert W. Heber
- 👤 John P. Mikus
- 👤 Jerome A. Seiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:53
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3823; C08G18/3825; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/58; C09; C09D; C09D5/00; C09D5/18; C09D5/185; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
45 words
A resinous composition comprising the ungelled reaction product of: (i) a diester of oxalic acid; (ii) a material containing one or more primary and/or secondary amino groups and one or more additional functional groups; and (iii) a material capable of coreacting with (i) or (ii).
Claim 2
Dependent Claim
45 words
A resinous composition comprising the ungelled reaction product of: (i) a diester of oxalic acid; (ii) a material containing one or more primary and/or secondary amino groups and one or more additional functional groups; and (iii) a material capable of coreacting with (i) or (ii).
Claim 3
Dependent Claim
30 words
The resinous composition of claim 1 wherein the material capable of coreacting with (i) or (ii) contains functionality which is coreactive with the one or more functional groups of (ii).
Claim 4
Dependent Claim
58 words
A resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups; (b) a material containing functional groups capable of coreacting with the ungelled composition of (a).
Claim 5
Dependent Claim
58 words
A resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups; (b) a material containing functional groups capable of coreacting with the ungelled composition of (a).
Claim 6
Dependent Claim
32 words
The resinous composition of claim 3 wherein the functional groups of the material of (b) are capable of coreacting with the different functional groups present on the amino group-containing material of (a).
Claim 7
Dependent Claim
20 words
The resinous composition of claim 3 wherein the diester of oxalic acid is selected from diethyl oxalate and dibutyl oxalate.
Claim 8
Dependent Claim
44 words
The resinous composition of claim 1 wherein the one or more additional functional groups present on the material containing primary and/or secondary amino groups are selected from the group consisting of hydroxyl, carboxyl, thiol, epoxy, alkoxysilane, tertiary amino, easily aminated ester, and vinyl unsaturation.
Claim 9
Dependent Claim
17 words
The resinous composition of claim 3 wherein the material containing primary and/or secondary amino groups is monomeric.
Claim 10
Dependent Claim
17 words
The resinous composition of claim 3 wherein the material containing primary and/or secondary amino groups is polymeric.
Claim 11
Dependent Claim
23 words
The resinous composition of claim 6 wherein the material containing primary and/or secondary amino groups contains an additional functional group which is hydroxyl.
Claim 12
Dependent Claim
28 words
A resinous composition comprising the ungelled reaction product of: (i) a diester of oxalic acid; (ii) 5-hydroxy-3-oxa-pentylamine; and (iii) a material capable of coreacting with (i) or (ii).
Claim 13
Dependent Claim
28 words
A resinous composition comprising the ungelled reaction product of: (i) a diester of oxalic acid; (ii) 5-hydroxy-3-oxa-pentylamine; and (iii) a material capable of coreacting with (i) or (ii).
Claim 14
Dependent Claim
46 words
A resinous composition comprising the ungelled reaction product of: (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups; (b) a polyisocyanate.
Claim 15
Dependent Claim
46 words
A resinous composition comprising the ungelled reaction product of: (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups; (b) a polyisocyanate.
Claim 16
Dependent Claim
74 words
An intumescent, fire protective composition comprising a source of phosphorus and a resinous composition comprising the ungelled reaction product of (i) a diester of oxalic acid; (ii) a material containing one or more primary and/or secondary amino groups and one or more additional functional groups; and (iii) a material capable of coreacting with (i) or (ii); said intumescent fire protective composition being capable of forming a carbonaceous char upon exposure to heat or flame.
Claim 17
Dependent Claim
74 words
An intumescent, fire protective composition comprising a source of phosphorus and a resinous composition comprising the ungelled reaction product of (i) a diester of oxalic acid; (ii) a material containing one or more primary and/or secondary amino groups and one or more additional functional groups; and (iii) a material capable of coreacting with (i) or (ii); said intumescent fire protective composition being capable of forming a carbonaceous char upon exposure to heat or flame.
Claim 18
Dependent Claim
87 words
An intumescent, fire protective composition comprising a source of phosphorus and a resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups; (b) a material containing functional groups capable of coreacting with the ungelled composition of (a); said intumescent fire protective composition being capable of forming a carbonaceous char upon exposure to heat or flame.
Claim 19
Dependent Claim
87 words
An intumescent, fire protective composition comprising a source of phosphorus and a resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups; (b) a material containing functional groups capable of coreacting with the ungelled composition of (a); said intumescent fire protective composition being capable of forming a carbonaceous char upon exposure to heat or flame.
Claim 20
Dependent Claim
32 words
The composition of claim 13 wherein the functional groups of the material of (b) are capable of coreacting with the different functional groups present on the amino group containing material of (a).
Claim 21
Dependent Claim
17 words
The intumescent composition of claim 13 additionally comprising a curing agent adapted to cure the resinous composition.
Claim 22
Dependent Claim
28 words
The intumescent composition of claim 15 wherein the resinous composition additionally comprises one or more resinous materials different from the ungelled reaction product of components (a) and (b).
Claim 23
Dependent Claim
14 words
The intumescent composition of claim 16 wherein the additional resinous material is a polyepoxide.
Claim 24
Dependent Claim
12 words
The intumescent composition of claim 13 additionally comprising a source of boron.
Claim 25
Dependent Claim
12 words
The intumescent composition of claim 18 additionally comprising a source of zinc.
Claim 26
Dependent Claim
16 words
The intumescent composition of claim 19 additionally comprising a source of expansion gas upon thermal decomposition.
Claim 27
Dependent Claim
11 words
The intumescent composition of claim 20 additionally comprising a reinforcing filler.
Claim 28
Dependent Claim
134 words
An intumescent fire protective composition comprising I. a resinous composition comprising (a) the ungelled reaction product of (i) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups, and (ii) a material containing functional groups capable of coreacting with the different functional groups present on the amino group containing material of (i); (b) an epoxy resin; (c) a curing agent adapted to cure the resinous composition of (I); II. an additive component, comprising a mixture of materials adapted to provide a source of phosphorous, zinc, boron, and an expansion gas upon thermal decomposition; said intumescent fire protective composition being capable of forming a carbonaceous char upon exposure to heat or flame.
Claim 29
Dependent Claim
134 words
An intumescent fire protective composition comprising I. a resinous composition comprising (a) the ungelled reaction product of (i) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups, and (ii) a material containing functional groups capable of coreacting with the different functional groups present on the amino group containing material of (i); (b) an epoxy resin; (c) a curing agent adapted to cure the resinous composition of (I); II. an additive component, comprising a mixture of materials adapted to provide a source of phosphorous, zinc, boron, and an expansion gas upon thermal decomposition; said intumescent fire protective composition being capable of forming a carbonaceous char upon exposure to heat or flame.
Claim 30
Dependent Claim
15 words
The intumescent composition of claim 22 wherein the additive component additionally comprises a reinforcing filler.
Claim 31
Dependent Claim
14 words
The composition of claim 22 wherein the epoxy resin is an aromatic epoxy resin.
Claim 32
Dependent Claim
19 words
The composition of claim 24 wherein the aromatic epoxy resin is a polyglycidyl ether of a polyhydric aromatic alcohol.
Claim 33
Dependent Claim
12 words
The composition of claim 22 wherein the curing agent is a polyamine.
Claim 34
Dependent Claim
29 words
The composition of claim 22 wherein the material adapted to provide a source of zinc is selected from the group consisting of zinc oxide, zinc borate, and zinc phosphate.
Claim 35
Dependent Claim
29 words
The composition of claim 22 wherein the material adapted to provide a source of boron is selected from the group consisting of boric acid, ammonium borate, and sodium borate.
Claim 36
Independent Claim
140 words
A method of reducing the rate of temperature rise in a substrate when it is subjected to fire conditions, which comprises applying to the surface of the substrate a fire protective composition which when exposed to fire conditions intumesces, characterized in that said fire protective composition comprises a source of phosphorus and a resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups, and (b) a material containing functional groups capable of coreacting with the ungelled composition of (a); said intumescent fire protective composition being adapted to provide a carbonaceous char when exposed to fire conditions retaining its integral structure and adhering to the substrate without external reinforcement.
Claim 37
Independent Claim
140 words
A method of reducing the rate of temperature rise in a substrate when it is subjected to fire conditions, which comprises applying to the surface of the substrate a fire protective composition which when exposed to fire conditions intumesces, characterized in that said fire protective composition comprises a source of phosphorus and a resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups, and (b) a material containing functional groups capable of coreacting with the ungelled composition of (a); said intumescent fire protective composition being adapted to provide a carbonaceous char when exposed to fire conditions retaining its integral structure and adhering to the substrate without external reinforcement.
Claim 38
Dependent Claim
22 words
The method of claim 29 wherein the intumescent fire protective composition additionally comprises a curing agent adapted to cure the resinous composition.
Claim 39
Dependent Claim
29 words
The method of claim 30 wherein the intumescent fire protective composition additionally comprises one or more resinous materials different from the ungelled reaction product of components (a) and (b).
Claim 40
Dependent Claim
13 words
The method of claim 31 wherein the resinous material is an epoxy resin.
Claim 41
Dependent Claim
32 words
The method of claim 31 wherein the intumescent fire protective composition additionally comprises a mixture of materials adapted to provide a source of zinc, boron, and an expansion gas upon thermal decomposition.
Claim 42
Dependent Claim
134 words
A substrate which demonstrates a reduced rate of temperature rise when it is subjected to fire conditions, characterized by having applied on the substrate surface a fire protective composition which when exposed to fire conditions intumesces, said fire protective composition, comprising a source of phosphorus and a resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups, and (b) a material containing functional groups capable of coreacting with the ungelled composition of (a); said intumescent fire protective composition being adapted to provide a carbonaceous char when exposed to fire conditions retaining its integral structure and adhering to the substrate without external reinforcement.
Claim 43
Dependent Claim
134 words
A substrate which demonstrates a reduced rate of temperature rise when it is subjected to fire conditions, characterized by having applied on the substrate surface a fire protective composition which when exposed to fire conditions intumesces, said fire protective composition, comprising a source of phosphorus and a resinous composition comprising the ungelled reaction product of (a) an ungelled composition comprising the half-amide reaction product of a diester of oxalic acid and a material containing one or more primary and/or secondary amino groups and one or more different functional groups, and (b) a material containing functional groups capable of coreacting with the ungelled composition of (a); said intumescent fire protective composition being adapted to provide a carbonaceous char when exposed to fire conditions retaining its integral structure and adhering to the substrate without external reinforcement.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |