Non-conjugated cyclic diene, non-conjugated cyclic diene...

Details Non-conjugated cyclic diene, non-conjugated cyclic diene... Non-conjugated cyclic diene, non-conjugated cyclic diene...

2006-11-28

2006-11-28

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...

C526S282000, C585S023000, C585S820000, C585S831000, C252S399000, C524S856000

Reexamination Certificate

active

07141631

ABSTRACT:
It is an object of the present invention to provide a non-conjugated cyclic diene and a non-conjugated cyclic diene composition which enable the production of a polymer based on non-conjugated cyclic diene which makes it possible to produce a (co)polymer at a high degree of polymerization activity, and a method of producing a polymer based on non-conjugated cyclic diene which makes it possible to produce a (co)polymer at a high degree of polymerization activity. A non-conjugated cyclic diene is used which meets at least one of the following requirements: (1) it contains a compound having a seven-membered cyclic triene hydrocarbon structure in a specific amount or less and (2) it contains a conjugated polyene compound having an eight-membered bicyclic hydrocarbon structure in a specific amount. Also, in a method of producing a non-conjugated cyclic diene polymer, the aforementioned non-conjugated cyclic diene is supplied to the polymerization or copolymerization using an olefin polymerization catalyst containing an organic aluminum oxy compound and/or an ionizing ionic compound. Also, in another method of producing a non-conjugated cyclic diene polymer, a non-conjugated cyclic diene which is obtained by bringing a crude non-conjugated cyclic diene into contact with an alkali and then removing at least a part of a low-boiling point fraction and at least a part of a high-boiling point fraction is used for the polymerization.

REFERENCES:
patent: 4748216 (1988-05-01), Tom
patent: 5155188 (1992-10-01), Goodall
patent: 5378783 (1995-01-01), Okumura et al.
patent: 01-096140 (1989-04-01), None
patent: 2000-204120 (2000-07-01), None
Esp@cenet database abstract of JP 324070, publication date: Oct. 28, 1991.
English language translation of JP 2000-204120, published Jul. 25, 2000.

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