Resins based on .alpha.-methyl styrene, styrene and a phenol
AssigneeNational Starch and Chemical Corporation
InventorsYves Runavot, Georges Billault, Jacques Salvetat
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Abstract
Resins suitable for adhesives are based on .alpha.-methyl styrene, styrene and phenol in certain percentages, viz. 25 to 63, 35 to 73 and 2 to 15 percent by weight, respectively, Combinations of resin, ethylene vinyl acetate copolymer or thermoelastomer and optionally a wax or tackifying oil yield excellent adhesives, in particular hot-melt adhesives.
Claims2
A resin having an average molecular weight of 400 to 2,000, which is useful in adhesives, based on a .alpha.-methyl styrene, styrene and a phenol as constituents, characterized in that the weight percentages of .alpha.-methyl styrene, styrene and a phenol with a structural formula ##STR2## in which R is hydrogen or a C.sub.1 -C.sub.12 alkyl group, which compounds are substantially the sole constituents, range from 25 to 63, from 35 to 73 and from 2 to 15 respectively.
Dependencies are inferred from the claim text.