초록 ▼

Phenol aralkyistion polymers can be prepared by reaction among a phenolic monomer, at least one styrenic monomer and an aryl diolefin. A phenolic monomer can be initially aralkylated in the presence of an acid catalyst with a first portion of at least one styrenic monomer to obtain an aralkylated ph

Phenol aralkyistion polymers can be prepared by reaction among a phenolic monomer, at least one styrenic monomer and an aryl diolefin. A phenolic monomer can be initially aralkylated in the presence of an acid catalyst with a first portion of at least one styrenic monomer to obtain an aralkylated phenol. The aralkylated phenol thereafter can be reacted with an aryl diolefin to obtain a phenol aralkylation polymer. Optionally, (though preferably) the phenol aralkylation polymer is further aralkylated with a second portion of at least one styrenic monomer. By employing specific catalyst concentrations, reactant concentrations, reaction temperatures, and reaction times, the formation of mono-functional and non-functional by-products is substantially reduced.

대표청구항 ▼

1. A process of producing an aralkylated phenol composition with minimized formation of (i) non-functional homo-polymerized styrenic components and (ii) mono-functional phenol degradation by-products, the process comprising:preparing a reaction mixture of at least one styrenic monomer and a phenolic

1. A process of producing an aralkylated phenol composition with minimized formation of (i) non-functional homo-polymerized styrenic components and (ii) mono-functional phenol degradation by-products, the process comprising:preparing a reaction mixture of at least one styrenic monomer and a phenolic monomer at a molar ratio of moles of total styrenic reactant to moles of phenolic monomer of from 0.5 to 2.1; adding an aralkylation catalyst to the reaction mixture to initiate a reaction between the phenolic monomer and the at least one styrenic monomer, wherein said aralkylation catalyst is added in an amount less than 0.1 mole percent based on the total number of moles of catalyst and phenolic monomer; and maintaining said reaction mixture at a reaction temperature not exceeding 140.degree. C. for a time sufficient to convert at least a portion of said phenolic monomer to said aralkylated phenol, wherein said aralkylated phenol composition so-produced comprises no more than 10% by weight combined of (i) said non-functional homo-polymerized styrenic components and (ii) said mono-functional phenol degradation by-products.