US3988266A
Expired / Lapsed
US
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Intumescent composition
Assignee: Cities Service Co
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Filing: 1976-03-08
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Granted: 1976-10-26
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Expires: 1996-03-08
Abstract
Abstract A water-insoluble amine-aldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC1## Wherein Q is the aldehyde residue and R is hydrogen, alkyl, haloalkyl, alkoxy, haloalkoxy, halo, nitro, acetamido, or sulfonamido is mixed with about 10-50% by weight of a synergist corresponding to the formula: ##SPC2## Wherein X is chloro or bromo, T is halo, hydrogen, or a hydrocarbyl or hydrocarbyloxy group, and Z is a monocyclic divalent saturated polybromocycloalkylene group containing 5-16 carbon atoms and 2-6 bromine atoms: said valences being on adjacent carbon atoms; to increase the foam volume obtainable from the intumescent agent. The compositions comprising the intumescent agent and synergist may be applied to substrates by conventional techniques.
Inventors
- 👤 Shirley H. Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:21
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/18; C08; C08K; C08K5/00; C08K5/02; C08K5/04; C08K5/06; C09D161/00; C09D161/20; C09D161/22; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/907; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31942
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
110 words
An intumescent composition comprising (A) a water-insoluble amine-aldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC9## wherein Q is the aldehyde residue and R is hydrogen, alkyl, haloalkyl, alkoxy, haloalkoxy, halo, nitro, acetamido, or sulfonamido and (B) about 10-50%, based on the weight of the intumescent agent, of a synergist corresponding to the formula: ##SPC10## wherein X is chloro or bromo, T is halo, hydrogen, or a hydrocarbyl or hydrocarbyloxy group, and Z is a monocyclic divalent saturated polybromocycloalkylene group containing 5-16 carbon atoms and 2-6 bromine atoms; said valences being on adjacent carbon atoms.
Claim 2
Dependent Claim
110 words
An intumescent composition comprising (A) a water-insoluble amine-aldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC9## wherein Q is the aldehyde residue and R is hydrogen, alkyl, haloalkyl, alkoxy, haloalkoxy, halo, nitro, acetamido, or sulfonamido and (B) about 10-50%, based on the weight of the intumescent agent, of a synergist corresponding to the formula: ##SPC10## wherein X is chloro or bromo, T is halo, hydrogen, or a hydrocarbyl or hydrocarbyloxy group, and Z is a monocyclic divalent saturated polybromocycloalkylene group containing 5-16 carbon atoms and 2-6 bromine atoms; said valences being on adjacent carbon atoms.
Claim 3
Dependent Claim
9 words
The composition of claim 1 wherein R is hydrogen.
Claim 4
Dependent Claim
18 words
The composition of claim 2 wherein the amine portion of the repeating unit corresponds to the formula: ##SPC11##
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein Q is the residue of an alkanal containing 1-5 carbon atoms.
Claim 6
Dependent Claim
10 words
The composition of claim 4 wherein the alkanal is formaldehyde.
Claim 7
Dependent Claim
14 words
The composition of claim 1 wherein the repeating units correspond to the formula: ##SPC12##
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein X and T are chloro.
Claim 9
Dependent Claim
13 words
The composition of claim 7 wherein the synergist corresponds to the formula: ##SPC13##
Claim 10
Dependent Claim
21 words
The composition of claim 8 wherein the concentration of synergist is about 10-35%, based on the weight of the intumescent agent.
Claim 11
Dependent Claim
13 words
The composition of claim 7 wherein the synergist corresponds to the formula: ##SPC14##
Claim 12
Dependent Claim
51 words
An intumescent composition comprising (A) a water-insoluble sulfanilamide-formaldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC15## and (B) about 15-30%, based on the weight of the intumescent agent, of a synergist corresponding to the formula: ##SPC16##
Claim 13
Dependent Claim
51 words
An intumescent composition comprising (A) a water-insoluble sulfanilamide-formaldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC15## and (B) about 15-30%, based on the weight of the intumescent agent, of a synergist corresponding to the formula: ##SPC16##
Claim 14
Dependent Claim
51 words
An intumescent composition comprising (A) a water-insoluble sulfanilamide-formaldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC17## and (B) about 15-50%, based on the weight of the intumescent agent, of a synergist corresponding to the formula: ##SPC18##
Claim 15
Dependent Claim
51 words
An intumescent composition comprising (A) a water-insoluble sulfanilamide-formaldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC17## and (B) about 15-50%, based on the weight of the intumescent agent, of a synergist corresponding to the formula: ##SPC18##
Claim 16
Dependent Claim
14 words
An article which comprises a substrate coated with the intumescent composition of claim 1.
References Cited (Backward Citations)
US3912845A
Cited
US3922251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |