Neodymium-carbon nanotube and method of preparing high...

Details Neodymium-carbon nanotube and method of preparing high... Neodymium-carbon nanotube and method of preparing high...

2006-12-19

2006-12-19

Teskin, Fred (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S153000, C526S164000, C526S908000, C502S114000, C502S115000, C502S117000, C534S016000, C423S44500R, C423S44500R, C977S746000, C977S748000

Reexamination Certificate

active

07151146

ABSTRACT:
The present invention relates to a method for preparing neodymium-carbon-nanotube and a process for preparing 1,4-cis-polybutadiene utilizing the same and more particularly, neodymium-carbon-nanotube. Neodymium is introduced by coordination with carboxylic acid, which is formed on the surface of carbon nanotube. In 1,3-butadiene polymerization with the neodymium-catalyst comprising the neodymium-carbon nanotube, a particular halogen compound, and a particular organometallic compound in an appropriate ratio, high 1,4-cis polybutadiene having molecular weight of 10,000 to 2,000,000 is produced, which exhibits excellent mechanical properties such as elasticity and durability.

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