Quick Search
Polymeric carbodiimide
Stabaxol P is an excellent extension of material service life, solid, high thermal stability.
PRODUCT DETAILS
Stabaxol P is an aromatic polycarbodiimide.
Stabaxol P functions as antihydrolysis agent for millable urethane rubbers and thermoplastic polyester polyurethanes (TPU) as well as polyester polymers (PET, PBT, TPE) and polyamides.
TYPICAL APPLICATIONS OF STABAXOL P:
-Powder (contains approx. 4% aerosil to prevent lumping)
-Prills
Stabaxol P is very easily soluble in petrol (gasoline), benzene, carbon tetrachloride, trichloroethylene, methylenechloride.
Stabaxol P is poor solubility in acetone; nearly insoluble in ethyl alcohol, water, and polyesters.
Function Stabaxol P is an aromatic polycarbodiimide.
Antihydrolysis agent for millable urethane rubbers and thermoplastic polyester polyurethanes (TPU) as well as polyester polymers (PET, PBT, TPE) and polyamides.
Stabaxol P is an aromatic polycarbodiimide.
Stabaxol P acts as an anti-hydrolysis agent.
Stabaxol P is developed for millable urethane rubbers and thermoplastic polyester polyurethanes (TPU) as well as polyester polymers (PET, PBT, TPE) and polyamides.
Recommended rate of Stabaxol P is 0.5-5.0 wt% in millable PUR rubbers, polyesters, polyamides and thermoplastic polyurethanes.
Product description of Stabaxol P:
Chemical composition of Stabaxol P:
Aromatic polycarbodiimide; molecular weight approx. 3.000 g/mol
Physical form as supplied:
- Powder (contains approx. 4% aerosil to prevent lumping)
- prills
Density (20 °C / 68 °F):
approx. 1.05 g/cm³
Melting range:
Approx. 60 - 90 °C ( 140 - 194 °F ) Stabaxol P shows a very wide softening range.
At approx. 50 °C (122 °F) it gradually begins to sinter; at temperatures above 70 °C (158 °F) it is resinous and tough; at temperatures above 90 °C (194 °F) it is a viscous fluid.
Carbodiimide content:
(N=C=N)
> 12.5 %
Flash Point:
310 °C (590 °F)
Ignition Temperature:
>455 °C (851°F)
Solubility:
very easily soluble in petrol (gasoline), benzene, carbon tetrachloride, trichloroethylene, methylenechloride; poor solubility in acetone; nearly insoluble in ethyl alcohol, water, and polyesters.
Uses of Stabaxol P:
Depending on the acid end group content and humidity content of the polymer to be stabilized as well as the stabilizing effect to be obtained, it is recommended to use 0.5 - 5.0 weight-% Stabaxol P to process millable PUR rubbers and 0.5 - 2.5 weight-% in case of polyesters, polyamides, thermoplastic polyurethanes.
The most suitable dosage depends on the requirements to be met and should always be ascertained in preliminary trials.
Trials have provided proof that by addition of 3 weight-% of Stabaxol P in millable polyurethanes, hydrolysis resistance is increased by 5 times compared to unprotected material.
The addition of merely 2.0 weight-% Stabaxol P to PET increases the life time of the latter by 3 -4 times.
Stabaxol P may be processed preferrably by way of separate feeding or alternav tively by direct incorporation as a dry blend.
Stabaxol P is available in Masterbatch form too, various types based upon the corresponding polymers, and thus offering the advantage of much more easier handling in respect of dosage and homogenizing.
Stabaxol P may be processed on any unit suitable for polyester and polyamide processing which provides sufficient dispersion of the neat material in the polymer.
In respect of the extruder equipment, experience showed that it is advisable to use a twin-screw extruder equipped with a L/D ratio > 38.
Appropriate cooling of the feeding zone is recommended to avoid particle accumulation in the feeding area.
At precessing temperature traces of volatile matters can escape which may temporarily cause irritation of skin, eyes and respiratory passages.
It is highly recommended to provide adequate local ventilation at all places where Stabaxol P stabilized products are exposed to temperatures exceeding 200 °C (392°F).
In particular Stabaxol P is necessary to avoid direct contact with liberated vapours.
A homogenious incorporation of Stabaxol P in polyurethane rubber does normally not present any difficulties as the actual temperature of the compound processed on the roll exceeds that of the softening point of Stabaxol P.
Stabaxol P is a antihydrolysis agent based on a ~ 3,000 MW polymeric aromatic carbodiimide.
Stabaxol P is suitable for millable polyurethane rubbers and thermoplastic polyester-based polyurethanes (TPU).
Stabaxol P is also suitable for polyester polymers, including polyester polyols, PET, PBT, TPE, and polyamides.
Carbodiimide content: 12.5% minimum.
Stabaxol P acts as an acid scavenger in polyester systems.
Acids, in the presence of moisture and heat catalyze the hydrolysis (or unzipping) of polyesters.
Stabaxol P reacts faster than the higher molecular weight Stabaxol P400 (discontinued), but slower than the oligomeric Stabaxol P200 or monomeric Stabaxol 1LF grades.
Consequently, Stabaxol P is a good choice for long term protection against hydrolysis.
Packing of Stabaxol P:
Fibre drums, contents 30 kg (66 lbs)
Storage stability of Stabaxol P:
According to experience available, if stored at about 20 °C (68°F) in originally closed containers, Stabaxol P can be kept for at least 12 months without becoming less effective.
Store Stabaxol P in cool and dry place.
During transportation or in case of prolonged storage at slightly elevated temperatures, one might observe agglomeration of the particles.
Please make sure that such agglomerations are being broken prior to use.
Handling of Stabaxol P:
Consult material safety data sheet (MSDS) for additional handling information on Stabaxol P.
Synonyms:
Polycarbodiimide
STABAXOL P
