Substituted heat-reactive resin properties

Phenolic Dispersion Particulate Nature and Molecular Weight. Phenolic dispersions of the BKUA-2260 type are solvent free, gum arabic stabilized dispersions of heat reactive resins prepared from the condensation of formaldehyde with variously substituted phenolic monomers. A typical set of properties is shown in Table 4. 

OC-Methylstyrene. This compound is not a styrenic monomer in the strict sense. The methyl substitution on the side chain, rather than the aromatic ring, moderates its reactivity in polymerization. It is used as a specialty monomer in ABS resins, coatings, polyester resins, and hot-melt adhesives. As a copolymer in ABS and polystyrene, it increases the heat-distortion resistance of the product. In coatings and resins, it moderates reaction rates and improves clarity. Physical properties of a-methylstyrene [98-83-9] are shown in Table 12. 

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