PolyAziridine Global PZBI-25

PolyAziridine Global PZBI-25 is a cross linker agent that improves bonding and cohesive strength of resins and binders, resulting in films with better resistances, particularly scratch resistance, abrasion, hydrolysis and general chemical resistances. As a blocked isocyanate, the blocking end groups can react with active hydrogen as found on carboxyl groups of acrylic emulsions or polyurethane dispersions. An interesting feature is that no CO2 is released.

Chemical Family: Aziridines

Functions: Crosslinking Agent

Synonyms: 4,4′-Bis(3,3-ethyleneureido)diphenylmethane, 4,4′-Bis(ethyleneiminocarbonylamino)diphenylmethane, 4,4′-Bis(N′,N′-ethyleneureido)diphenylmethane, 4,4′-Diphenylmethanebis(ethyleneurea), 4,4′-Methylene bis(phenyl-N,N-ethyleneurea), Diphenylmethane 4,4′-diethyleneurea, Diphenylmethane-4,4′-bis(ethyleneurea), Diphenylmethane-4,4′-bis(N,N-diethyleneurea), Diphenylmethane-4,4′-bis(N,N-ethyleneurea), N,N′-(Methylene di-p-phenylene)bis(aziridine-1-carboxamide), N,N′-(Methylenedi-4,1-phenylene)bis(1-aziridinecarboxamide), N,N′-(Methylenedi-4,1-phenylene)bis[1-aziridinecarboxamide], NSC 26234, p,p′-Bis(ethyleneureido)diphenylmethane

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions
CAS No.
7417-99-4
EC No.
231-034-6
Technologies
Structure

PolyAziridine Global PZBI-25 - Structure

Features & Benefits

Applications & Uses

Applications
  • As resin insolubilizer and fixing aid in printing process carried out at low temperature, in order to improve durability to abrasion and washing of the designs in the treated textiles.
  • Unlike primary condensates of melamine or urea resins, PZBI-25 does not generate formaldehyde during heat treatment. Also it does not generate CO2, as would do standard isocyanates.
Uses

PZBI-25 can be used with various functional groups like carboxyl moieties, hydroxyl, chlorosulfonic, amines and even esters under appropriate conditions. These conditions range from room temperature for the carboxylic groups to 150ºC for the hydroxyl pending groups. Most standard conditions range from 80ºC to 120ºC in order to speed and complete cross linking process. Normal dosing varies depending on application process and results, but 1% to 3% of the dispersion over total formulation may be a good starting point.

Properties

Physical Form
Appearance
milky liquid at 20ºC
Typical Properties
ValueUnitsTest Method / Conditions
Solid content27.5 ± 1.0
pH (5%)10.5 ± 1.0
Viscosity, at 25°Cmax. 300cps
p.m.336.39

Storage & Handling

Handling and Storage
  • Keep closed in the original packing in a cool, well ventilated place. Keep container closed when not in use. Keep the temperature between 5°C and 30°C. As all other water based products, low temperatures may affect the product. Dispersion can be destroyed after freezing.
  • Shake before using: product has a tendency to settling. Expiry date: 6 months. Please refer to the Safety Data Sheets in order to ensure safe handling, transport and personal protection.