CYREZ® 964 LF
- INCI/Chemical Name:
- Methylated melamine formaldehyde resin, absorbed on hydrated amorphous silica
- SKU:
- BP174397
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TYPE: Hexa methoxy methyl melamine
FORM OF DELIVERY (f.o.d.): 65 % active on silica
SPECIAL PROPERTIES AND USES
Hexa methoxy methyl melamine (HMMM) as crosslinker for adhesion
promoting and reinforcing systems in rubber applications
CYREZ®-grades (HMMM) offer several advantages over the older hexa
methylene tetramine (HEXA or HMT) system. CYREZ® resins are not
corrosive to steel cord, polyester cord or metal molds. This property is
important when considering adhesion promoters. CYREZ® resins are much more suitable as methylene donors, as opposed to HMT which produces ammonia. When used in conjunction with ALNOVOL® PN 760 or resorcinol, CYREZ® resin offers the ultimate in rubber adhesion giving
optimum bonding strength.
- No skin irritation.
- No amine or ammonia by-product
- Better scorch protection than provided by HMT
- No corrosive effects on steel and brass/bronze coated steel
- Ease of handling
- Low dust level
- High loading
CYREZ® 964 LF is used in applications as a methylene donor in the "HRH" dry rubber adhesion systems for bonding rubber to organic cord and wire reinforcement materials. To improve adhesion as well as physical properties CYREZ® 964 LF should be used together with silica in the compound.
CYREZ® 964 LF can be used in conjunction with methylene acceptors
(ALNOVOL® PN 160 or ALNOVOL® PN 320) in rubber compounds to
increase modulus, tensile, stiffness and hardness. A suggested range
could be 5 to 15 phr. The ratio within this dosage should be ALNOVOL :
CYREZ 7:3 (calculated on active).