Page 126 - Handbook of Adhesion Promoters

7.17 Monomers 119

Composition: 50% hexamethoxymethylmelamine ether, 50% filler; >95% hexamethylene
tetramine, 3% amorphous silica; 1/3 resorcinol, 1/3 hexamethoxymethylmelamine ether, 1/3 silica;
resorcinol derivative on filler in the ratio 1:1, >98.00% hexamethoxymethyl melamine resin, no
carrier
Purity, %: 98 Molecular mass: 390.43
PHYSICAL PROPERTIES
Color: clear to cloudy, white to yellow to red brown Ash content, %: 2-44.6
o
3
pH: 7-9 Density, at 20 C, kg/m : 1200-1600
o
Melt flow rate, g/10 min at 192 C/2.16 kg:
Solubility (diluents): ethanol, methylene chloride, slightly soluble in ethyl acetate, and acetone,
insoluble in aliphatic hydrocarbons
o
Viscosity at 25 C, mPa s: 3000-8000
USE
Manufacturer: Allnex, Lanxess, Ningbo, Actmix Polymer, Wholemark Fine Chemical
Outstanding properties: Cohedur bonding agents enhance adhesion by physical and chemical
interaction. These direct bonding agents are mixed into the rubber compound, which can be
applied directly to the substrate. Without bonding agents, adhesion is based only on mechanical
interaction due to the penetration of the rubber between the fibers. Low content of free formalde-
hyde. Relatively nontoxic and present little hazard of dermatitis. Good flow ability, easily dispers-
ible.
Recommended for resins: NBR, HNBR, CR, NR, IR, SBR, BR
Recommended for products: tires, conveyor belting, V-belts, reinforcing hose, air springs, flexi-
ble containers and fabric proofing
Recommended applications: promote adhesion between elastic rubber and inelastic-but-durable
material such as reinforcing carcasses or steel cords, which are combined to make long-lasting
tires, conveyor belts, hoses, rubberized fabrics, containers, etc. Enhances adhesion by physical and
chemical interaction. Curing agent for resorcinol and novolac resins.
Typical dose: 4.6-8

7.17 MONOMERS

GENERAL INFORMATION
Name: Cylink NH8, CAS #: 65983-31-5 EC #: 251-678-1
Fancryl FA
Common synonym: dicyclopentenyloxyethyl acrylate Molecular mass: 248.32
Empirical formula: C15H20O3 Purity, %: 90
PHYSICAL PROPERTIES
o
o
Boiling point, C: 113 (0.13 kPa) Freezing point, C: <-40