Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1989-07-21
1990-03-13
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526 75, 526237, 526280, 526281, 526282, 526283, 526290, 585251, 585271, C08F 3204, C08F 3208
Patent
active
049084208
ABSTRACT:
A method for preparing a resin having light color comprises the steps of: hydrogenating a compound represented by the formula (1) ##STR1## wherein l, m and n are integers of 0.ltoreq.l.ltoreq.3, 0.ltoreq.m.ltoreq.8 and l.ltoreq.n.ltoreq.3, respectively, and R.sup.1 and R.sup.6 each represent a hydrogen atom or a hydrocarbon residue having 1 to 3 carbon atoms, with or without R.sup.5 and R.sup.6 forming a ring, in the presence of a Ziegler catalyst containing a transition metal compound of the groups IV to VI of the Periodic Table and an organometallic compound of the groups I to III of the Periodic Table in combination to obtain a norbornene compound represented by the formula (2) ##STR2## wherein l, m, n and R.sup.1 and R.sup.6 are the same as above; and polymerizing the norbornene compound to give the resin having light color.
REFERENCES:
patent: 3629221 (1971-12-01), Arakawa et al.
patent: 3784481 (1974-01-01), Lassau et al.
patent: 4204081 (1980-05-01), Menapace
patent: 4533700 (1985-08-01), Mizui et al.
Kobayashi Yukio
Sasaki Makoto
Tsuchiya Shozo
Nippon Oil Company Ltd.
Schofer Joseph L.
Teskin F. M.
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