GB2400853A - Flame-retardant formulation - Google Patents
Flame-retardant formulation Download PDFInfo
- Publication number
- GB2400853A GB2400853A GB0309168A GB0309168A GB2400853A GB 2400853 A GB2400853 A GB 2400853A GB 0309168 A GB0309168 A GB 0309168A GB 0309168 A GB0309168 A GB 0309168A GB 2400853 A GB2400853 A GB 2400853A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flame
- formulation
- retardant
- weight
- polyol
- 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- Withdrawn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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A flame-retardant formulation comprises tris (dichloropropyl) phosphate and tris (butoxyethyl) phosphate as flame-retarders in the range of 99:1 to 75:25 by weight of the formulation, preferably 98:2. The formulation may further comprise solvents, diluents, viscosity reducers, and carriers. A method of making a polyurethane foam is also disclosed, wherein the flame-retardant formulation is added to a foam-forming reaction mixture containing a polymeric polyol and an aromatic isocyanate. Typically, the flame-retardant formalation is added in an amount of 7-20 wt. % based on the weight of the polyol. The polyol may be a polyether polyol or a polyester polyol and the aromatic isocyanate is preferably toluene isocyanate. One or more catalysts, blowing agents, gelling agents, or accelerators may be included in the foam-forming reaction.
Description
FLAME-RETARDANT FORMULATION
This invention relates to a flame-retardant formulation, to a method of making a polyurethane foam containing such a formulation and to a polyurethane foam made by the said method.
Many of the flame-retardants conventionally used in connection with polyurethane foam components have been found to have a tendency to migrate and/or volatilise from the foams with age. This tendency is particularly disadvantageous in the case of polyurethane foam components of automobile seating, where the migration and/or volatilization of the flame-retardant leads to 'fogging' of glass surfaces such as windows and instrument panels.
Previous attempts to minimise fogging have included the addition of arylcontaining flame-retardants which are expensive and environmentally undesirable.
We have now found that the use of a mixture of two, non-aryl, flame retardants can ameliorate the above-mentioned disadvantages.
Accordingly, the present invention provides a flame-retardant formulation comprising, as flame-retardant ingredients, (a) tris (dichloropropyl) phosphate (b) tris (butoxyethyl) phosphate, the ratio of (a) to (b) being in the range 99:1 to 75:25 by weight of the formulation.
Preferably, the ratio of (a) to (b) is in the range 98:2 to 9():10 by weight of the formulation.
The formulation may optionally contain other ingredients, such as solvents, diluents, viscosity reducers and carriers.
For example, ingredient (b) may optionally contain around 1% by weight of n-butanol and a similar amount of 2-butoxyethanol. In this form, it is available as AMGARD TBEP.
Also, ingredicot (a) may contain around 0. 1% by weight of a cycloaliphatic epoxy resin. In this form, it is available as ANTTBLAZE'r' lO TDCP.
Most preferably, the flame-retardant formulation according to the present invention comprises 98o by weight of ingredient (a) and 2% by weight of ingredient (b).
The present invention also provides a method of making a polyurethane foam from the reaction between a polymeric polyol and an aromatic isocyanate, in which there is added to the foam-forming reaction mixture a flame retardant amount of the flame-retardant formulation hereinabove 2() described.
Suitably, the flame-retardant formulation is added in an amount of 7 to 20, preferably 8 to 12 parts by weight per 100 parts by weight of polyol (PHP) . The polyol may be a polyether or a polyester polyol.
The aromatic isocyanate is suitably toluene diisocyanatc, preferably in the form of an 80:20 mixture of the two isomers toluene -2, 4diisocyanate and toluenc -2, 6- diisocyanatc (hereinafter referred to as TDI T80).
Other additives, including catalysts, blowing agents, gelling agents and accelerators, may be included in the foam-forming reaction mixture, as is well known to those skilled in the relevant art.
The present invention further provides a flame-retardant, low-fogging polyurethane lioam made by the method herein described.
The present invention will now be illustrated, merely by way of example, with reference to the following:
Example 1
A typical polyether foam formulation treated with the flame retardant formulation in accordance with the present invention was subjected to the FMVSS 302 Flammability Standard Test.
25kg/m3 Polyether foam formulation Polyether Polyol (3500MW polyol) Parts 100.00 Water Parts 4.15 Crompton Niax 'AI Parts 0.04 Air Products Dabco''33LV Parts 0.12 Goldschmidt Tegostab'BF2370 Parts 1.30 Stannous Octoate Parts 0.26 TDI T80 index l 10 TDI T80 Parts 52.33 Antiblaze V270 Parts 15.00
_
FMVS302 Performance Mean burn length Mm Mean burn time Sec indicative rating Self _ extinguishing
Example 2
A typical polyester foam formulation coated with the flame retardant formulation in accordance with the present invention was subjected to the FMVSS 302 Flammability Standard test.
30kg/m3 Polyester foam formulations (using one polyol with a hydroxyl value of;50 and one with a hydroxyl value of 60) Polyester Polyol (OH value 50 or 60) parts 100.00 W ater parts 4. 00 Air products Dabco ANEW parts | 1.00 Goldschmidt TegoAmin'R-3CPE parts 0.60 Goldschmdt Tegostab'R-:B5055 parts 1.00 T D T T80 index 102 T D I T80 parts 47. 35 (50 OH) 48.93 (60 OH)
__ _ _
Antiblaze V270 parts 10.00 Mean burn length Mean burn time Indicative rating Self extinguishing As can be seen, both foams when treated with the flame-retardant formulation in accordance with the invention have self-extinguishing properties.
The OH number is calculated as follows: OII number = 56.1 x 1000 x f
M
Wherein f is the functionality of the polyol and M is the molecular weight of the polyol.
liax' = blowing catalyst Dabco':R-' = gelling catalyst Tegostab'R: = silicone surfactant Stannous 0ctoate = tightness controller 3()
Claims (16)
1. A flame-retardant formulation comprising, as flame-retardant ingredients, (a) tris (dichloropropyl) phosphate, and (b) iris (butoxyethyl) phosphate, the ratio of (a) to (b) being in the range 99:1 to 75:25 by weight of the formulation.
2. A flame-retardant formulation as claimed in Claim 1 in which the ratio of (a) to (b) is in the range 98:2 to 90:10 by weight of the formulation.
3. A flame-retardant formulation as claimed in Claim I or Claim 2 in which said formulation contains one or more solvents, diluents, viscosity reducers or carriers.
4. A flame-retardant formulation as claimed in Claim 3 in which ingredient (b) contains 1% by weight of n-butanol and 1% by weight of 2butoxyethanol.
5. A flame-retardant formulation as claimed in Claim 3 in which ingredient (a) contains 0.1% by weight of a cyclo-aliphatic epoxy resin.
6. A flame-retardant formulation as claimed in any one of the preceding claims in which said flame-retardant formulation comprises 98% by weight of ingredient (a) and 2% by weight of ingredient (b).
7. A method of making a polyurethane foam from the reaction between a polymeric polyol and an aromatic isocyanate, in which there is added to the foam-forming reaction mixture a flame-retardant amount of a flameretardant formulation in accordance with any one of Claims 1 to 6.
8. A method as claimed in Claim 7 in which the flame-retardant formulation is added in an amount of 7 to 20 parts by weight per 100 parts by weight of polyol.
9. A method as claimed in Claim 8 in which the flame-retardant formulation is added in an amour'. of 8 to 12 parts by weight per 1.00 parts by weight of polyol.
10. A method as claimed in any one of Claims 7 to 9 in which the polyol 1() is a polyether polyol.
11. A method as claimed in any one of Claims 7 to 9 in which the polyol is a polyester polyol.
12. A method as claimed in Claim 7 in which the aromatic isocyanate is toluene diisocyanate.
13. A method as claimed in Claim 12 in which the toluene diisocyanate comprises an 80:20 mixture of toluene -2, 4- diisocyanate and toluene -2, 6- diisocyanate.
14. A method as claimed in any one of Claims 7 to 13 in which one or more catalysts, blowing agents, gelling agents or accelerators are included in the foam-forming reaction.
15. A flame-retardant, low-fogging polyurethane foam made by the method of any one of Claims 7 to 14.
16. A flame-retardant formulation substantially as described herein with reference to the examples.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0309168A GB2400853A (en) | 2003-04-23 | 2003-04-23 | Flame-retardant formulation |
| PCT/GB2004/001686 WO2004094519A1 (en) | 2003-04-23 | 2004-04-21 | Flame-retardant formulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0309168A GB2400853A (en) | 2003-04-23 | 2003-04-23 | Flame-retardant formulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0309168D0 GB0309168D0 (en) | 2003-05-28 |
| GB2400853A true GB2400853A (en) | 2004-10-27 |
Family
ID=9957127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0309168A Withdrawn GB2400853A (en) | 2003-04-23 | 2003-04-23 | Flame-retardant formulation |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2400853A (en) |
| WO (1) | WO2004094519A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735039A2 (en) * | 1995-03-29 | 1996-10-02 | Daihachi Chemical Industry Co., Ltd. | A process for preparing tribromoneopentyl chloroalkyl phosphates |
| JPH111612A (en) * | 1998-06-01 | 1999-01-06 | Daihachi Chem Ind Co Ltd | Flame-retardant polyurethane foam composition |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034726B (en) * | 1978-11-20 | 1983-01-12 | Ici Ltd | Polyester polyol compositions |
| AU3827999A (en) * | 1998-05-21 | 1999-12-13 | Huntsman Ici Chemicals Llc | Hydrocarbon blown rigid polyurethane foams having improved flammability performance |
-
2003
- 2003-04-23 GB GB0309168A patent/GB2400853A/en not_active Withdrawn
-
2004
- 2004-04-21 WO PCT/GB2004/001686 patent/WO2004094519A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0735039A2 (en) * | 1995-03-29 | 1996-10-02 | Daihachi Chemical Industry Co., Ltd. | A process for preparing tribromoneopentyl chloroalkyl phosphates |
| JPH111612A (en) * | 1998-06-01 | 1999-01-06 | Daihachi Chem Ind Co Ltd | Flame-retardant polyurethane foam composition |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004094519A1 (en) | 2004-11-04 |
| GB0309168D0 (en) | 2003-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| COOA | Change in applicant's name or ownership of the application |
Owner name: ALBEMARLE CHEMICALS UK LIMITED Free format text: FORMER APPLICANT(S): RHODIA CONSUMER SPECIALTIES LIMITED |
|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |