What it does

Curing agent for novolac phenolic resins; resin hardener and weak accelerator in rubber.

Compatible rubbers

NRSBRNBR

Typical properties

AppearancePWhite crystalline powder
Melting pointP260 °C
DensityP1.35 g/cm³

P marked values are PubChem literature data (pure substance). Others are typical commercial specifications and vary by producer and grade.

Typical dosage

8–15% of the resin [TO BE VERIFIED]

FAQ

What does HMTA do in novolac resin?When heated, it releases formaldehyde and ammonia; it crosslinks the novolac chains and hardens the resin (makes it thermoset).
Why is HMTA used in rubber?It is a methylene donor in resorcinol/HMTA adhesion systems; it increases adhesion between rubber and textile or steel cord. It is also a weak secondary accelerator.
Looking to source HMTA in Türkiye? Let's talk about producer selection and samples.rubberchem.com.tr →

Sources: PubChem CID 4101 · General rubber chemistry literature · PubChem page

Same class

PBA
Phenyl-beta-naphthylamine intermediateCAS to be verified