GB2196659A - Fire retardant composition - Google Patents
Fire retardant composition Download PDFInfo
- Publication number
- GB2196659A GB2196659A GB08625572A GB8625572A GB2196659A GB 2196659 A GB2196659 A GB 2196659A GB 08625572 A GB08625572 A GB 08625572A GB 8625572 A GB8625572 A GB 8625572A GB 2196659 A GB2196659 A GB 2196659A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrogen phosphate
- composition
- weight
- ratio
- fire retardant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
- D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts
- D06M11/71—Salts of phosphoric acids
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Fireproofing Substances (AREA)
Abstract
A drilling system comprises in combination, a drilling derrick (1) by means of which a string of pipes (3) can be suspended from a winch (6), a motorised swivel head (2) at the end of the winch, means (11) for delivering a drilling pipe (14) in a position for adding it to the string of pipes starting from a stockage site, a lifting motor (7) for driving the winch, a reversible regulator (16) for said lifting motor, sensors (19, 23, 24, 25) for determining the state of the system, and a programmable automaton (21) for supplying the valves of instructions for regulating the lifting motor depending on signals supplied by said state sensors.
Description
SPECIFICATION
Fire retardant composition
The present invention relates to fire retardant compositions suitable for the treatment of a broad range of natural and synthetic material and combinations thereof.
A high proportion of structural components, soft furnishings, furniture clothing and artifacts in every day use are of flammable construc tion. Those made of natural materials generally produce flammable vapour when subjected to heat. Ignition of this vapour increases the local heat, engendering further vapour production and therefore flame spread. Synthetic, or manmade materials frequently melt and ignite, spreading the fire not only by heat generation, but also by dripping detritus. Both flame spread systems produce fumes which present a danger to life, but in the case of most synthetic materials these fumes assume an even more critical role due to the presence of highly toxic by-products such as hydrogen cyanide and nitrile derivatives.
A need therefore exists for a general purpose retardant which will impart maximum protection to the widest possible range of materials and, by slowing or preventing the spread of flames, will reduce the volume of fumes generated. At the same time the retardant mixture chosen should not in itself have any toxic properties before pyrolysation and should add little if anything to the dangerous fumes produced on pyrolysis. Furthermore, the retardant should present no hazard in handling or application.
Thus a need exists for such general purpose fire and flame retardant which will have beneficial effect whether applied to finished goods or incorporated in manufacture. It is considered necessary that such a retardant should avoid the shortcomings of many retardants currently available, in that it should not change the characteristics of the material to which it is applied, or in which it is incorporated, whilst at the same time fulfilling the above- conditions of retardancy.
According to the present invention a fire retardant composition comprises a mixture including: diammonium hydrogen phosphate; disodium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium hydrogen phosphate, sodium hydrogen carbonate and a surfactant-containing composition.
The surfactant-containing composition is preferably S.G. SIGMA 7 (marketed by Fowler
Inc. of Oklahoma).
The amounts of the materials set out in the following description and claims may have a tolerance of + 5% on the stated proportions or percentages.
In a first preferred composition the ratio by weight of diammonium hydrogen phosphate to disodium hydrogen phosphate is 1 : 0.11 to 1 : 0.19, more preferably 1 : 1.15.
In a second preferred composition the ratio by weight of diammonium hydrogen phosphate to ammonium dihydrogen phosphate is 1 : 1.6 to 1: 2.1, more preferably 1 ' 1.83.
In a third preferred composition the ratio by weight of diammonium hydrogen phosphate to ammonium hydrogen carbonate is 1 : 1 to 1 1.5, more preferably 1 . 1.25.
In a fourth preferred composition the ratio by weight of diammonium hydrogen phosphate to sodium hydrogen carbonate is 1 0.35 to 1 : 0.58, more preferably 1 : 0.46.
In a fifth preferred composition the ratio by weight of diammonium hydrogen phosphate to S.C.SIGMA 7 is 1 : 0.025 to 1 : 0.083, more preferably 1 : 0.055.
In particularly preferred compositions the proportions of all of the ingredients are as defined above.
An an hydros mixture in accordance with this invention may be incorporated during manufacture into various materials including rigid polyurethane or other foamed materials, building boards including wood chip board and backings for carpets.
An aqueous solution of the composition in accordance with the invention, which may contain up to 55% "/w of composition, may be used to impregnate materials such as furnishing fabrics, clothing, timber, non-woven fabrics, paper and paper products including wallpaper.
The pH of such a solution is preferably within the range 5 to 8, more preferably approximately 6.4.
An additional surfactant may be added to solutions used to treat materials having a high surface tension such as carpets, uniforms and the like. An amount of 0.25% based on the weight of the solution, of a neutral detergent may be employed.
The invention has been found to be particularly applicable in treatment of upholstery, for example in aircraft, which are subject to contamination by human occupancy.
Preferred compositions in accordance with this invention may incorporate an ingredient such as gum ammoniac to prevent leaching of the aforementioned ingredients. A bactericide such as chlorhexidine gluconate may also be incorporated.
Compositions in accordance with this invention are advantageous in being non-irritant when tested in accordance with the F.D.A.
Handbook, Primary Irritation Skin Test. Furthermore, a single composition in accordance with this invention may be used to treat a wide variety of substrates, avoiding any need for a user to identify for example whether a particular textile is composed of natural or synthetic fibres before selection of an appropriate retardant.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (9)
1. A fire retardant composition comprising a mixture of diammonium hydrogen phosphate, disodium hydrogen phosphate, ammonium dihydrogen phosphate, ammonium hydrogen phosphate, sodium hydrogen carbonate and a surfactant.
2. A fire retardant composition as claimed in Claim 1 wherein the ratio by weight of diammonium hydrogen phosphate to disodium hydrogen phosphate is from 1:0.11 to 1:0.19.
3. A fire retardant composition as claimed in Claim 1 or Claim 2 wherein the ratio by weight of diammonium hydrogen phosphate to ammonium dihydrogen phosphate is from 1:1.6 to 1:2.1
4. A fire retardant composition as claimed in any preceding claim, wherein the ratio by weight of diammonium hydrogen phosphate to ammonium hydrogen carbonate is from 1:1 to 1:1.5
5. A fire retardant composition as claimed in any preceding claim, wherein the ratio by weight of diammonium hydrogen phosphate to sodium hydrogen carbonate is from 1:0.35 to 1:0.58.
6. A fire retardant composition as claimed in any preceding claim, wherein the ratio by weight of diammonium hydrogen phosphate to surfactant is from 1:0.025 to 1:0.083.
7. A fire retardant composition substantially as described herein.
8. An aqueous solution containing up to 55% by weight of the composition as claimed in any preceding claim.
9. An aqueous solution as claimed in Claim 8, wherein the pH is from 5 to 8.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08625572A GB2196659A (en) | 1986-10-25 | 1986-10-25 | Fire retardant composition |
CA000550274A CA1303300C (en) | 1986-10-25 | 1987-10-26 | Fire retardant composition |
US07/112,459 US4908160A (en) | 1986-10-25 | 1987-10-26 | Fire retardant composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08625572A GB2196659A (en) | 1986-10-25 | 1986-10-25 | Fire retardant composition |
PCT/GB1988/000198 WO1989008735A1 (en) | 1988-03-14 | 1988-03-14 | Fire retardant composition |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8625572D0 GB8625572D0 (en) | 1986-11-26 |
GB2196659A true GB2196659A (en) | 1988-05-05 |
Family
ID=26291452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08625572A Withdrawn GB2196659A (en) | 1986-10-25 | 1986-10-25 | Fire retardant composition |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2196659A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2216554A (en) * | 1988-03-15 | 1989-10-11 | Patrick Delaney Bumpus | Flame-retardant treatment composition |
WO1991000326A1 (en) * | 1989-07-03 | 1991-01-10 | Fire Guard Scandinavia As | Flame retarding and smoke retarding mixture |
CN110663985A (en) * | 2019-11-15 | 2020-01-10 | 湖北中烟工业有限责任公司 | Reconstituted tobacco with low combustion speed and preparation method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1603123A (en) * | 1978-05-31 | 1981-11-18 | Thacker D A | Fire retardant formulation |
-
1986
- 1986-10-25 GB GB08625572A patent/GB2196659A/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1603123A (en) * | 1978-05-31 | 1981-11-18 | Thacker D A | Fire retardant formulation |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2216554A (en) * | 1988-03-15 | 1989-10-11 | Patrick Delaney Bumpus | Flame-retardant treatment composition |
GB2216554B (en) * | 1988-03-15 | 1991-11-27 | Patrick Delaney Bumpus | U v detectable flame retardant treatment |
WO1991000326A1 (en) * | 1989-07-03 | 1991-01-10 | Fire Guard Scandinavia As | Flame retarding and smoke retarding mixture |
US5342656A (en) * | 1989-07-03 | 1994-08-30 | Arve Valso | Flame retarding and smoke retarding mixture |
CN110663985A (en) * | 2019-11-15 | 2020-01-10 | 湖北中烟工业有限责任公司 | Reconstituted tobacco with low combustion speed and preparation method thereof |
CN110663985B (en) * | 2019-11-15 | 2021-09-17 | 湖北中烟工业有限责任公司 | Reconstituted tobacco with low combustion speed and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
GB8625572D0 (en) | 1986-11-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |