 MPP |
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Chemical name: Melamine
Pyrophosphate
Synonymous: Melamine Polyphosphate
Molecular Formula:(C3H8N6)n(HPO3)m
Molecular Weight: 430.23
CAS No.:218768-84-4
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 Product
description |
| Melamine Polyphosphate is a white free flowing crystalline powder, non-halogenated, phosphorus based flame retardant useful by itself or as an adjuvant for flame retarding various thermoplastics, polyolefins, elastomers, engineering resins, paints and intumescent fire retardant coatings, it can partly replace Ammonium Polyphosphate(APP) due to its excellent flame retardant mechanisms. Melamine Polyphosphate can also be used in non-polymer fields covering Epoxy, Paper, Paint, Wood Laminates to effect fire retardant barriers. Melamine Polyphosphate is useable for Di-pentaerythritol as well as polyolefins, and available for SMC process (unsaturated polyester resins), Melamine Polyphosphate can be also used together with ammonium Polyphosphate (as an intumescent resource and catalyst) in some intumescent flame retardant applications. |
Product
Code |
Plastic application type: Melamine Polyphosphate used for thermal plasticsIntumescent
Coating application type : Melamine Polyphosphate used for flame retardant intumescent coatings. |
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Flame
Retardant Mechanisms |
Because of the synergism of combination of Nitrogen
and Phosphorus, only a small injection dosage is
required for formulation achieving UL 94 V-0 grade
flame retarding, due to Acidic catalysis, inert
gas formation and foaming, flames shall be retared
and eliminated effectively.
Melamine Pyrophosphate doesn't contribute to formation
of toxic gases.
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Physical &
Chemical properties |
Appearance : white, free-flowing crystalline powder
Purity : min. 98%
Nitrogen content : approx. 40-44%
P2O5content : approx. 33%
Moisture content : max. 0.25%
Melting point : 320℃
pH of 25% slurry : 3-4
Solubility in water : max. 0.3% g/100ml H2O @ 20 deg.℃
TGA @ 300℃ : max. 0.5%
TGA @ 350℃ : max. 6.0%
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Application fields |
Thermal
plastics |
Non-polymer
fields |
PA6,
PA66 |
Cellulose |
PU,
TPU |
Epoxy
resin |
PP,
PE |
UP
resin |
PS,
HIPS |
Textile |
PBT,
PET |
Paper |
PC
Paints, Intumescent |
Coatings |
PVC
Wood |
Laminate |
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Application Guide: |
Melamine Polyphosphate can be processed up to 300℃ on typical polymer processing equipment such as single or twin screw extruders, internal batch mixer (Banbury type) and roll mills. Molding operations such as injection molding and thermal forming processes are easily accomplished with composites made of this flame retardant.
28-30% Melamine Polyphosphate is the suggested adding dosage for Polymer or Intumescent Coatings.
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Cost comparison
with other halogenated flame retardants |
Cost savings can be achieved with Melamine Polyphosphate composites over halogenated systems due to the density difference of the flame retardants, i.e. the halogenated systems contribute significantly more to the composite's density. Therefore, more more composite of Melamine Polyphosphate compound can be produced for the same weight. Another benefit over other halogenated materials is the reduction of smoke generated with the combustion of compounds prepared with Melamine Polyphosphate (measure optically by smoke subscription, ASTM-2483).
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Handling condition: |
Store in sealed containers or dried storing warehouse
at room temperature.
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Packing: in
20kg or 25kg PP bags with inner file lining.
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