Air Products long-standing experience in the area of high-performance epoxy curing agents for industrial maintenance applications has led to the development of Ancamine 2748 and Ancamide 2749 curatives
, the company s next generation curing agents for use in demanding, high chemical-resistant applications.
Specialist chemicals company Chemtura Corporation stated on Thursday that it will increase prices of its urethane and speciality curatives
products prices due to the continued escalation of raw material costs with effect from 15 August 2011 or as contracts allow.
These include 1,4-butanediol, Caytur 21 and 31 delayed-action amine curatives
, HQEE diol chain extender, MBCA, Ethacure 300 aromatic diamine alternative to MBCA, ethoxylated trimethylopropane, and three Vibracure diols.
This resin is especially beneficial to the European marketplace given the growing popularity of Primid(R) curatives
due to their environmentally-friendly properties.
are usually added late in a rubber mix to avoid excessive heat history, they sometimes do not receive sufficient work history for good dispersion.
Offers a variety of amine and polyol-based curatives
and chain extenders for elastomers.
Rhenogran ZBOP-50 and ZABOP-50 are said to provide rubber manufacturers with two dithiophosphate alternatives with improved stability, offering enhanced compatibility with standard synergistic curatives
in non-nitrosamine cure systems, according to the company.
for high-performance, heat-cured PUR elastomers include Conacure AH-33 MBOCA polyol curative
with an equivalent weight of 280 that functions as a liquid MBOCA alternative; Conacure AH-40 non-MBOCA liquid aromatic diamine curing agent with equivalent weight of 133.
The fourth step is to recompound the treated crumb with some virgin elastomer and additional curatives
to obtain the final compound for product manufacture.
The problem in single stage mixing is that the metal of the mixer which has absorbed work heat in the primary mixing operation must be cooled before the mix is reduced in temperature sufficiently to add curatives
Curene series of urethane curatives
includes Curene 442, a standard MBOCA-type material; Curene 185 for reduced hardness; and Curene 3005, a liquid curative
for polyester-based pre-polymers.
Driven by market demands for improved curatives
Produces a series of urethane curatives
Adiprene K is made possible by a unique blocked curative
composed of a methylene dianiline-NaCl (MDA3-NaCl) complex.
Conacure AH-33: MBOCA polyol curative
, having an equivalent weight of 280.