Patent ID: 7781633

Claim:
A process for forming a polymer product from an olefin product comprising one or more prime olefin monomers, the process comprising: a. providing an olefin product formed by a process comprising the steps of; (i) contacting a feed comprising an oxygenate with a catalytically effective amount of molecular sieve catalyst under conditions effective to selectively convert at least some of the oxygenate to a product comprising prime olefins and depositing a certain amount of coke on the catalyst, the catalyst having an Si/Al 2 value, a maximum POS, and an active fraction comprising a number of acid sites; (ii) optimizing the POS by adjusting the amount of coke present relative to the number of acid sites contained in the active fraction of the catalyst; and b. contacting at least one of the prime olefin monomers, and optionally one or more comonomers, with a catalytically effective amount of a polymerization catalyst under conditions sufficient to polymerize the olefin product and optional comonomer(s); wherein the optimizing step comprises determining a ratio necessary to achieve an optimum POS using the equation: carbon atoms per acid site at maximum POS=−51.226*[Si/Al 2 in sieve]+25.777.