WO2011145072A1 - Flame retarding composition - Google Patents

Flame retarding composition Download PDF

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Publication number
WO2011145072A1
WO2011145072A1 PCT/IB2011/052198 IB2011052198W WO2011145072A1 WO 2011145072 A1 WO2011145072 A1 WO 2011145072A1 IB 2011052198 W IB2011052198 W IB 2011052198W WO 2011145072 A1 WO2011145072 A1 WO 2011145072A1
Authority
WO
WIPO (PCT)
Prior art keywords
melamine
composition
flame retarding
mixture
paint
Prior art date
Application number
PCT/IB2011/052198
Other languages
French (fr)
Inventor
Geert Frederic Versteeg
Glenn Rexwinkel
Original Assignee
Procede Group Bv
Gerntholtz, Otto, Carl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Procede Group Bv, Gerntholtz, Otto, Carl filed Critical Procede Group Bv
Publication of WO2011145072A1 publication Critical patent/WO2011145072A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K21/00—Fireproofing materials
    • C09K21/06—Organic materials
    • C09K21/12—Organic materials containing phosphorus
    • 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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • C08K5/34922—Melamine; Derivatives thereof
    • 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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477—Six-membered rings
    • C08K5/3492—Triazines
    • C08K5/34928—Salts
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints

Definitions

  • the present invention relates to a flame retarding composition.
  • the present invention relates to a flame retarding composition including a mixture of melamine components and melamine compounds.
  • Flame retardants or flame retarding compositions are defined as materials that inhibit or resist the spread of fire. These are classified into various categories, though predominantly:
  • Tetrakis(hydroxymethyl)phosphonium salts made by passing phosphine gas through a solution of formaldehyde and a mineral acid such as hydrochloric acid, predominantly used as flame retardants for textiles;
  • halocarbons which include organochlorines such as polychlorinated biphenyls (PCBs), chlorendic acid derivates (most often dibutyl chlorendate and dimethyl chlorendate) and chlorinated paraffins; organobromines such as polybrominated diphenyl ether (PBDEs), which be further broken down into pentabromodiphenyl ether (pentaBDE), octabromodiphenyl ether (octaBDE), decabromodiphenyl ether (decaBDE) and hexabromocyclododecane (HBCD); organophosphates in the form of halogenated phosphorus compounds such as tri-o-cresyl phosphate, tris(2,3-dibromopropyl) phosphate (TRIS), bis(2,3-dibromopropyl) phosphate, tris(l-aziridinyl)-pho
  • organochlorines such
  • Brominated flame retardants or flame retarding compositions are a group of flame retardants that include organic compounds containing bromine. These are the major type of chemical flame retardants and are effective in plastics and textile applications. They are applied to prevent electronics, clothes and furniture from catching fire. They are produced synthetically with numerous variants with very varying chemical properties.
  • PCBs Polychlorinated biphenyls
  • a flame retarding composition includes a mixture of:
  • a method of preparing a flame retarding composition includes the step of mixing
  • the melamine compound may be selected in terms of the respective required stability of the flame retarding composition.
  • Melamine polyphosphate may have a concentration in the mixture ranging from 0 wt% to 50 wt% or 10 wt% to 30 wt%.
  • the melamine may be substantially pure.
  • the mixture may be ground to a size smaller than 10 microns and preferably smaller than 5 microns to form a finely ground flame retarding composition.
  • the finely ground flame retarding composition may be adapted to be added as a filler to the paint in the paint production process thereby replacing at least a part of the extender or filler in the paint.
  • the mixture may be adapted to be added in combination with other ingredients and/or through a semi-finished product.
  • the amount of mixture added to the paint may be between 15 wt% and 40 wt% of the total weight of the paint.
  • the mixture may have a white colour and/or be colourfast.
  • the flame retarding composition may be used in paints, glues, gels, plastics, pastes, foams and the like.
  • a flame retarding composition includes a mixture of:
  • the melamine compound is selected in terms of the respective required stability of the flame retarding composition.
  • the melamine polyphosphate can have a concentration in the mixture ranging from 0 wt% (when pure melamine is applied) to 50 wt%. and has been optimized with respect to reduction of smoke production. Reduction of smoke production was optimal at polyphosphate concentrations between 10 wt% and 30 wt%.
  • meltamine and melamine polyphosphate are mixed in the desired composition. Subsequently the mixture is ground to a size smaller than 10 microns and preferably smaller than 5 microns. The resulting finely ground flame retardant is added as filler to the paint in the paint production process replacing (part of) the extender or filler. Moreover, the flame retardant mixture can also be added in combination with other ingredients and/or through a semi-finished product. The amount of flame retardant added to the paint is between 15 wt% and 40 wt% of the total weight of the paint. While already excellent flame retarding paints are obtained between 20 wt% and 25 wt% of flame retardant.
  • the mode of action of the flame retardant under consideration consists of endothermic degradation, thermal shielding and dilution of the gas phase. These three mechanisms together have proven to be very effective in retarding flames and fires.
  • the flame retardant mixture has a white colour and is colourfast.
  • the invention relates to a smoke reducing fire retardant paint and a method for the preparation thereof.
  • the application of the filler as a flame retardant is not be limited to paints but can also be extended to glues, gels, plastics, pastes, foams and the like.
  • the fire retardant paint is prepared like any other paint containing an extender by replacing (part of) its extender by the flame retardant mixture.
  • Extenders or fillers are generally inert inorganic minerals in fine powder form such as clays, chalk and other natural deposits. Commonly used mineral extenders are aluminium silicate), calcium carbonate and barium sulphate.
  • the invention provides a method of preparing a flame retarding composition, which includes the step of mixing

Abstract

The invention discloses a flame retarding composition, which includes a mixture of: at least one melamine component selected from the group consisting of: melamine; and melamine homologues; and at least one melamine compound selected from the group consisting of: melamine polyphosphate; melamine pyrophosphate; and melamine cyanurate. The invention also extends to a method of preparing a flame retarding composition.

Description

FLAME RETARDING COMPOSITION
FIELD OF INVENTION
The present invention relates to a flame retarding composition.
More particularly, the present invention relates to a flame retarding composition including a mixture of melamine components and melamine compounds.
BACKGROUND TO INVENTION
Flame retardants or flame retarding compositions are defined as materials that inhibit or resist the spread of fire. These are classified into various categories, though predominantly:
(a) Minerals including asbestos, compounds such as aluminium hydroxide, magnesium hydroxide, hydromagnesite, antimony trioxide, various hydrates, red phosphorus, and boron compounds, mostly borates;
(b) Tetrakis(hydroxymethyl)phosphonium salts, made by passing phosphine gas through a solution of formaldehyde and a mineral acid such as hydrochloric acid, predominantly used as flame retardants for textiles; and
(c) Synthetic materials, usually halocarbons which include organochlorines such as polychlorinated biphenyls (PCBs), chlorendic acid derivates (most often dibutyl chlorendate and dimethyl chlorendate) and chlorinated paraffins; organobromines such as polybrominated diphenyl ether (PBDEs), which be further broken down into pentabromodiphenyl ether (pentaBDE), octabromodiphenyl ether (octaBDE), decabromodiphenyl ether (decaBDE) and hexabromocyclododecane (HBCD); organophosphates in the form of halogenated phosphorus compounds such as tri-o-cresyl phosphate, tris(2,3-dibromopropyl) phosphate (TRIS), bis(2,3-dibromopropyl) phosphate, tris(l-aziridinyl)-phosphine oxide (TEPA), and others.
Brominated flame retardants or flame retarding compositions are a group of flame retardants that include organic compounds containing bromine. These are the major type of chemical flame retardants and are effective in plastics and textile applications. They are applied to prevent electronics, clothes and furniture from catching fire. They are produced synthetically with numerous variants with very varying chemical properties.
Several of the above chemicals are considered harmful and have been linked to liver, thyroid, reproductive/developmental, and neurological health side-effects. Polychlorinated biphenyls (PCBs) were banned in 1977 when it was discovered that they were toxic and the European Union has banned several types of brominated flame retardants in particular polybrominated diphenyl ethers from 2008.
Besides the conventional alternatives such as antimony or phosphorus- based retardants which have toxicological problems of their own, halogen- free alternatives are being explored. These alternatives include a technique to fuse flame retardants into products (to prevent chemicals leaking), nanoclays incorporating montmorillonite, and an entirely new plastic which produces water when burned called bishydroxydeoxybenzoin (BHDB). Inherently flame-resistant products are ideal and such plastics are applied in the aerospace industry though they are not cost-effective.
It is an object of the invention to suggest a flame retarding composition which will assist in overcoming the above obstacles. SUMMARY OF INVENTION
According to the invention, a flame retarding composition, includes a mixture of:
(a) at least one melamine component selected from the group consisting of:
(i) melamine; and
(ii) melamine homologues; and
(b) at least one melamine compound selected from the group consisting of:
(i) melamine polyphosphate;
(ii) melamine pyrophosphate; and
(iii) melamine cyanurate.
Also according to the invention, a method of preparing a flame retarding composition, includes the step of mixing
(a) at least one melamine component selected from the group consisting of:
(i) melamine; and
(ii) melamine homologues; and
(b) at least one melamine compound selected from the group consisting of:
(i) melamine polyphosphate;
(ii) melamine pyrophosphate; and
(iii) melamine cyanurate.
to form a flame retarding mixture adapted to be used as a flame retarding composition.
The melamine compound may be selected in terms of the respective required stability of the flame retarding composition.
Melamine polyphosphate may have a concentration in the mixture ranging from 0 wt% to 50 wt% or 10 wt% to 30 wt%. The melamine may be substantially pure.
The mixture may be ground to a size smaller than 10 microns and preferably smaller than 5 microns to form a finely ground flame retarding composition.
The finely ground flame retarding composition may be adapted to be added as a filler to the paint in the paint production process thereby replacing at least a part of the extender or filler in the paint.
The mixture may be adapted to be added in combination with other ingredients and/or through a semi-finished product.
The amount of mixture added to the paint may be between 15 wt% and 40 wt% of the total weight of the paint.
The mixture may have a white colour and/or be colourfast.
The flame retarding composition may be used in paints, glues, gels, plastics, pastes, foams and the like.
DETAILED DESCRIPTION OF EXAMPLE
The invention will now be described by way of example.
According to the invention, a flame retarding composition, includes a mixture of:
(a) at least one melamine component selected from the group consisting of:
(i) melamine; and
(ii) melamine homologues; and
(b) at least one melamine compound selected from the group consisting of: (i) melamine polyphosphate;
(ii) melamine pyrophosphate; and
(iii) melamine cyanurate.
The melamine compound is selected in terms of the respective required stability of the flame retarding composition.
The melamine polyphosphate can have a concentration in the mixture ranging from 0 wt% (when pure melamine is applied) to 50 wt%. and has been optimized with respect to reduction of smoke production. Reduction of smoke production was optimal at polyphosphate concentrations between 10 wt% and 30 wt%.
Melamine and melamine polyphosphate are mixed in the desired composition. Subsequently the mixture is ground to a size smaller than 10 microns and preferably smaller than 5 microns. The resulting finely ground flame retardant is added as filler to the paint in the paint production process replacing (part of) the extender or filler. Moreover, the flame retardant mixture can also be added in combination with other ingredients and/or through a semi-finished product. The amount of flame retardant added to the paint is between 15 wt% and 40 wt% of the total weight of the paint. While already excellent flame retarding paints are obtained between 20 wt% and 25 wt% of flame retardant. The mode of action of the flame retardant under consideration consists of endothermic degradation, thermal shielding and dilution of the gas phase. These three mechanisms together have proven to be very effective in retarding flames and fires. The flame retardant mixture has a white colour and is colourfast.
Melamine and its derivatives are non-toxic and are not listed as chemicals known cause cancer or reproductive toxicity. Accordingly the invention relates to a smoke reducing fire retardant paint and a method for the preparation thereof. However, the application of the filler as a flame retardant is not be limited to paints but can also be extended to glues, gels, plastics, pastes, foams and the like.
The fire retardant paint is prepared like any other paint containing an extender by replacing (part of) its extender by the flame retardant mixture. Extenders or fillers are generally inert inorganic minerals in fine powder form such as clays, chalk and other natural deposits. Commonly used mineral extenders are aluminium silicate), calcium carbonate and barium sulphate.
Accordingly the invention provides a method of preparing a flame retarding composition, which includes the step of mixing
(a) at least one melamine component selected from the group consisting of:
(i) melamine; and
(ii) melamine homologues; and
(b) at least one melamine compound selected from the group consisting of:
(i) melamine polyphosphate;
(ii) melamine pyrophosphate; and
(iii) melamine cyanurate.
to form a flame retarding mixture adapted to be used as a flame retarding composition.

Claims

PATENT CLAIMS
1. A flame retarding composition, which includes a mixture of:
(a) at least one melamine component selected from the group consisting of:
(i) melamine; and
(ii) melamine homologues; and
(b) at least one melamine compound selected from the group consisting of:
(i) melamine polyphosphate;
(ii) melamine pyrophosphate; and
(iii) melamine cyanurate.
2. A composition as claimed in claim 1, in which the melamine compound is selected in terms of the respective required stability of the flame retarding composition.
3. A composition as claimed in claim 1 or claim 2, which includes melamine polyphosphate having a concentration in the mixture ranging from 0 wt% to 50 wt% or 10 wt% to 30 wt%.
4. A composition as claimed in any one of the preceding claims, in which the melamine is substantially pure.
5. A composition as claimed in any one of the preceding claims, in which the mixture includes granules having a size smaller than 10 microns for forming a finely ground flame retarding composition.
6. A composition as claimed in any one of the preceding claims, in which the mixture includes granules having a size smaller than 5 microns for forming a finely ground flame retarding composition.
7. A composition as claimed in claim 5 or claim 6, in which the finely ground flame retarding composition is adapted to be added as a filler to paint in a paint production process thereby replacing at least a part of the extender or filler in the paint.
8. A composition as claimed in any one of the preceding claims, in which the mixture is adapted to be added in combination with other ingredients and/or through a semi-finished product.
9. A composition as claimed in any one of the preceding claims, in which an amount of mixture added to paint is between 15 wt% and 40 wt% of the total weight of the paint.
10. A composition as claimed in any one of the preceding claims, in which the mixture has a white colour and/or is colourfast.
11. A composition as claimed in any one of the preceding claims, which is adapted to be used in paints, glues, gels, plastics, pastes, foams and the like.
12. A method of preparing a flame retarding composition, which includes the step of mixing
(a) at least one melamine component selected from the group consisting of:
(i) melamine; and
(ii) melamine homologues; and
(b) at least one melamine compound selected from the group consisting of:
(i) melamine polyphosphate;
(ii) melamine pyrophosphate; and
(iii) melamine cyanurate.
to form a flame retarding mixture adapted to be used as a flame retarding composition.
13. A method as claimed in claim 12, in which the melamine compound is selected in terms of the respective required stability of the flame retarding composition.
14. A method as claimed in claim 12 or claim 13, which includes melamine polyphosphate having a concentration in the mixture ranging from 0 wt% to 50 wt% or 10 wt% to 30 wt%.
15. A method as claimed in any one of claims 12 to 14, in which the mixture includes pure melamine.
16. A method as claimed in any one of claims 12 to 15, which includes the step of grinding the mixture to a size smaller than 10 microns to form a finely ground flame retarding composition.
17. A method as claimed in any one of claims 12 to 16, , which includes the step of grinding the mixture to a size smaller than 5 microns to form a finely ground flame retarding composition.
18. A method as claimed in claim 16 or claim 17, in which the finely ground flame retarding composition is adapted to be added as a filler to paint in a paint production process thereby replacing at least a part of the extender or filler in the paint.
19. A method as claimed in any one of claims 12 to 18, in which the mixture is adapted to be added in combination with other ingredients and/or through a semi-finished product.
20. A method as claimed in any one of claims 12 to 19, which includes the step of adding an amount of the mixture to paint which is between 15 wt% and 40 wt% of the total weight of the paint.
21. A method as claimed in any one of claims 12 to 20, in which the mixture has a white colour and/or is colourfast.
22. A method as claimed in any one of claims 12 to 21, in which the flame retarding composition is adapted to be used in paints, glues, gels, plastics, pastes, foams and the like.
23. A flame retarding composition substantially as hereinbefore described with reference to the examples.
24. A method of preparing a flame retarding composition substantially as hereinbefore described with reference to the examples.
PCT/IB2011/052198 2010-05-19 2011-05-19 Flame retarding composition WO2011145072A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA201002704 2010-05-19
ZA2010/02704 2010-05-19

Publications (1)

Publication Number Publication Date
WO2011145072A1 true WO2011145072A1 (en) 2011-11-24

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6521682B1 (en) * 1999-07-13 2003-02-18 Alcantara S.P.A. Textile materials with fireproof additive and method for producing
US20040076752A1 (en) * 2001-12-21 2004-04-22 R. Magdina Method of painting, paint usable for the method, and method of producing the paint
US20040082712A1 (en) * 1996-09-30 2004-04-29 Blount David H. Flame retardant urea-bio based urethane compositions
US20060175587A1 (en) * 2003-03-05 2006-08-10 Kasowski Maya M Reaction product of a phosphorous acid with ethyleneamines for flame resistance
US20070173553A1 (en) * 2003-07-29 2007-07-26 Taylor Jr Edward W Waterborne coatings and foams and methods of forming them
EP1873299A1 (en) * 2005-04-19 2008-01-02 Seiren Co., Ltd. Flame-retardant metal-coated fabric and gasket comprising the same for electromagnetic-wave shielding
US20090149582A1 (en) * 2007-12-05 2009-06-11 Bayer Materialscience Ag Self-extinguishing thermoplastic polyurethanes, their use, and processes for their preparation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040082712A1 (en) * 1996-09-30 2004-04-29 Blount David H. Flame retardant urea-bio based urethane compositions
US6521682B1 (en) * 1999-07-13 2003-02-18 Alcantara S.P.A. Textile materials with fireproof additive and method for producing
US20040076752A1 (en) * 2001-12-21 2004-04-22 R. Magdina Method of painting, paint usable for the method, and method of producing the paint
US20060175587A1 (en) * 2003-03-05 2006-08-10 Kasowski Maya M Reaction product of a phosphorous acid with ethyleneamines for flame resistance
US20070173553A1 (en) * 2003-07-29 2007-07-26 Taylor Jr Edward W Waterborne coatings and foams and methods of forming them
EP1873299A1 (en) * 2005-04-19 2008-01-02 Seiren Co., Ltd. Flame-retardant metal-coated fabric and gasket comprising the same for electromagnetic-wave shielding
US20090149582A1 (en) * 2007-12-05 2009-06-11 Bayer Materialscience Ag Self-extinguishing thermoplastic polyurethanes, their use, and processes for their preparation

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