Hydroxymethylphenylphosphinic Acid (flame resistant)

Detailed Product Description

Name: Hydroxymethylphenylphosphinic acid  (flame resistant)

Synonyms: 3-Hydroxyphenylphosphinyl-methanol; HMPPA

   

Molecular Formula:  C₇H₉O₃P

CAS No:  [61451-78-3]

Melting point:  ≥138 °C

Decomposition Temperature: 235°C (5%)

Water solubility:  readily soluble

Physical state: white crystals

Content: 99.0 %(min)

Application: Hydroxymethylphenylphosphinic acid

 is a bifunctional copolymerisable phosphorous flame retardant monomer, which can be polycondesated with ethylene glycol and terephthalate to form flame retardant PET, and renders the alternated PET and the resulting plastics and fibers good fire-resistance property. The spinning property of the PET is fairly good as the Hydroxymethylphenylphosphinic acid was used.

Usable method: Added after pre-esterfication with EG during the PET synthesize procedures.  Addition of approx. 3.3% HMPPA during polycondensation process. The P-content of the resulting flame retardant polyester is approx. 0.6%. Consult our technical service of determining the polycondensation conditions

Packing: 25kgs in barrel