Patent US4702861A successfully refreshed from Google Patents.
US4702861A
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Flame retardant materials
Assignee: Certified Technologies Corp
•
Filing: 1986-05-14
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Granted: 1987-10-27
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Expires: 2006-05-14
Abstract
Abstract A flame retardant formulation for application as an aqueous working dispersion onto surfaces of normally combustible materials. Upon exposure to elevated temperatures and/or flame, the formulation creates a substantially continuous protective film as it undergoes a transition of composition, with the protective film generally encapsulating and/or enveloping the surface of the article onto which it is applied. In addition to being insulative, the film excludes oxygen from the surface of the substrate, and is capable of radiating infrared and visible light when exposed to elevated temperatures. In the formulation, and upon exposure to elevated temperatures and/or flame, the material releases forms of chlorine, bromine, and phosphorus, for the protection that these materials provide. In addition, antimony oxide is present for its protective property, together with hydrated alumina for its water-release capability.
Inventors
- 👤 Bruce W. Farnum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:45
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/02; C09D; C09D5/00; C09D5/18; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10S521/00; Y10S521/906; Y10S521/907
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
A flame retardant surface coating for creation of a substantially continuous film over normally combustible materials, comprising an aqueous dispersion having the following formulation: ______________________________________
Composition Percent Range by Weight
______________________________________
CaCO.sub.3 8-16%
Al.sub.2 O.sub.3.3H.sub.2 O
5-20%
Nonylphenoxypoly 0.6 to 1.2%
(ethyleneoxy)ethanol/
lecithin
Colloidal SiO.sub.2 and/or
1 to 2%
Texipol
Polyacrylic acid 0.5 to 1%
Decabromodiphenyloxide
0.5 to 2%
Isodecyldiphenyl phosphate
0.5 to 5%
An oxide of antimony
0 to 1.75%
selected from the
group consisting of
antimony trioxide and
colloidal antimony
pentoxide
Ammonia 26 degree Baume'
0.1 to 0.3%
or potassium tripolyphosphate
Polyvinylchloride acrylic
30%
copolymer latex solids
in 50% water solution
Water (including water
35 to 50%
present in the
polyvinylchloride
acrylic copolymer
latex)
Titanium dioxide and
0 to 5%.
tinting pigments
______________________________________
Claim 2
Dependent Claim
125 words
A flame retardant surface coating for creation of a substantially continuous film over normally combustible materials, comprising an aqueous dispersion having the following formulation: ______________________________________
Composition Percent Range by Weight
______________________________________
CaCO.sub.3 8-16%
Al.sub.2 O.sub.3.3H.sub.2 O
5-20%
Nonylphenoxypoly 0.6 to 1.2%
(ethyleneoxy)ethanol/
lecithin
Colloidal SiO.sub.2 and/or
1 to 2%
Texipol
Polyacrylic acid 0.5 to 1%
Decabromodiphenyloxide
0.5 to 2%
Isodecyldiphenyl phosphate
0.5 to 5%
An oxide of antimony
0 to 1.75%
selected from the
group consisting of
antimony trioxide and
colloidal antimony
pentoxide
Ammonia 26 degree Baume'
0.1 to 0.3%
or potassium tripolyphosphate
Polyvinylchloride acrylic
30%
copolymer latex solids
in 50% water solution
Water (including water
35 to 50%
present in the
polyvinylchloride
acrylic copolymer
latex)
Titanium dioxide and
0 to 5%.
tinting pigments
______________________________________
Claim 3
Dependent Claim
143 words
A flame retardant surface coating as defined in claim 1 being particularly characterized in that said aqueous dispersion has the following formulation: ______________________________________
Percent Function in
Composition by Wt. Formulation
______________________________________
CaCO.sub.3 8.30 pigment and trap for
acid gases
Al.sub.2 O.sub.3.3H.sub.2 O
8.30 pigment and water
release agent
TiO.sub.2 1.57 pigment for hiding
power and whiteness
Nonylphenoxypoly
0.60 surfactant
(ethyleneoxy)
ethanol
Lecithin 0.20 surfactant
Colloidal SiO.sub.2
1.60 thickener
Polyacrylic 0.55 thickener and graphitic
acid char former
Decabromodiphenyl-
1.87 fire retardant
oxide
Isodecyldiphenyl
4.55 fire retardant
phosphate plasticizer
Antimony 1.50 antimony oxide fire
trioxide retardant extender
Ammonia 26 0.17 stabilize the colloidal
degree Baume suspensions by
controlling pH on the
slightly alkaline side
Polyvinylchloride-
59.95 Binder, film former,
acrylic copolymer fire retardant polymer,
latex (in 50% graphite char former
solids)
Water 10.84 provide a non-flammable
and non-toxic
dispersion solvent for
convenient application
properties.
______________________________________
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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) | 1990-10-26 | 1991-04-27 | 1991-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-26 | 1995-04-27 | 1995-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-26 | 1999-04-27 | 1999-10-27 | $7700.00 | Window Closed / Lapsed |