US4339357A
Expired / Lapsed
US
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Intumescent composition
Assignee: Great Lakes Chemical Corp
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Filing: 1979-09-17
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Granted: 1982-07-13
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Expires: 1999-09-17
Abstract
Abstract A compound of the formula ##STR1## wherein a, b, c, d, and n are integers; a is from 1 to 3; b and c are independently selected from the group consisting of 0 and 1; d and n are independently selected from the group consisting of 1 and 2; R 1 and R 4 are independently selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and haloalkyl of 1 to 4 carbon atoms and 1 to 2 halogen atoms; and R 2 and R 3 are independently selected from the group consisting of haloalkyl containing 1 to about 4 carbon atoms and 1 to about 2 halogen atoms selected from the group consisting of chlorine, bromine, and mixtures thereof. The use of this compound with specified amounts of a certain methylated methylol melamine and water allows one to produce an intumescent composition which is substantially superior to prior art intumescent compositions.
Inventors
- 👤 Richard R. Nicholson
- 👤 Ray E. Smith
- 👤 Jayendra G. Shukla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:40
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C09D5/185; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
An intumescent composition consisting essentially of from about 8 to about 55 percent (by weight) of a compound selected from the group consisting of ##STR7## wherein a, b, c, d, and n are integers; a is from 1 to 3; b and c are independently selected from the group consisting of 0 and 1; d and n are independently selected from the group consisting of 1 and 2; R 1 and R 4 are independently selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and haloalkyl of 1 to 4 carbon atoms and 1 to 2 halogen atoms; and R 2 and R 3 are independently selected from the group consisting of haloalkyl containing 1 to about 4 carbon atoms and 1 to about 2 halogen atoms selected from the group consisting of chlorine, bromine, and mixtures thereof, from about 20 to about 40 percent (by weight) of water and from about 10 to about 70 percent (by weight) of a cyclic nitrogen compound of the formula ##STR8## wherein e, f, and g are integers selected from the group consisting of 1 and 2, e plus f plus g equal about 3 to 6, and X, X', and X" are independently selected from the group consisting of hydrogen and --CH 3 .
Claim 2
Dependent Claim
217 words
An intumescent composition consisting essentially of from about 8 to about 55 percent (by weight) of a compound selected from the group consisting of ##STR7## wherein a, b, c, d, and n are integers; a is from 1 to 3; b and c are independently selected from the group consisting of 0 and 1; d and n are independently selected from the group consisting of 1 and 2; R 1 and R 4 are independently selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms and haloalkyl of 1 to 4 carbon atoms and 1 to 2 halogen atoms; and R 2 and R 3 are independently selected from the group consisting of haloalkyl containing 1 to about 4 carbon atoms and 1 to about 2 halogen atoms selected from the group consisting of chlorine, bromine, and mixtures thereof, from about 20 to about 40 percent (by weight) of water and from about 10 to about 70 percent (by weight) of a cyclic nitrogen compound of the formula ##STR8## wherein e, f, and g are integers selected from the group consisting of 1 and 2, e plus f plus g equal about 3 to 6, and X, X', and X" are independently selected from the group consisting of hydrogen and --CH 3 .
Claim 3
Dependent Claim
20 words
The composition of claim 1, wherein at least one of said X, X', and X" groups is --CH 3 .
Claim 4
Dependent Claim
49 words
The intumescent composition of claim 2, wherein said composition contains from about 20 to about 45 percent (by weight) of the phosphoric acid, from about 25 to about 35 percent (by weight) of water, and from about 20 to about 50 percent (by weight) of said cyclic nitrogen compound.
References Cited (Backward Citations)
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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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |