4-methyl-1-pentene polymer, process for producing the same...

Details 4-methyl-1-pentene polymer, process for producing the same... 4-methyl-1-pentene polymer, process for producing the same...

2008-07-07

2011-11-15

Rabago, Roberto (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S348000, C526S348100, C526S348200, C526S348300, C526S348600, C526S124900

Reexamination Certificate

active

08058379

ABSTRACT:
The present invention provides a 4-methyl-1-pentene polymer having excellent balance between heat resistance and rigidity, a process for producing the polymer, and a film and a LED mold formed from the polymer. The 4-methyl-1-pentene polymer comprises 50 to 100% by mass of a constituting unit derived from 4-methyl-1-pentene and 0 to 50% by mass of a constituting unit derived from at least one of olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene, wherein the 4-methyl-1-pentene polymer is obtainable by continuously feeding a monomer forming the 4-methyl-1-pentene polymer and an organic solvent to a polymerization reactor and continuously extracting a polymerization reaction mixture containing the resulting 4-methyl-1-pentene polymer from the polymerization reactor.

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*International Search Report (PCT/ISA/210) for PCT/JP2008/062287 mailed Oct. 7, 2008.
Extended Search Report from European Patent Office issued in corresponding European Patent application No. 08777949.2 dated Dec. 15, 2010.

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