Ring-opened polymer from norbornene type of polycyclic monomer a

Details Ring-opened polymer from norbornene type of polycyclic monomer a Ring-opened polymer from norbornene type of polycyclic monomer a

1989-11-08

1991-10-29

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526141, 526188, 526281, C08F 3206, C08F 3208, C08F 238

Patent

active

050617710

ABSTRACT:
(1) A solvent-soluble ring-opened polymer constituted of 100-50% by weight of a norbornene derivative of monomer (A) represented by the formula ##STR1## wherein, R.sub.1 and R.sub.2 are the same or different and each denote hydrogen or alkyl and m denotes an interger of 0 to 2, and 0-50% by weight of another norbornene derivative of monomer (B) capable of undergoing ring-opening copolymerization with the preceding monomer (A), the polymer having a number average molecular weight of 10,000 to 50,000, a weight average molecular weight-to-number average molecular weight ratio (Mw/Mn) of up to 3, and a glass transition temperature of at least 80.degree. C., and
(2) a process for producing such ring-opened polymers as stated above.

REFERENCES:
patent: 4614778 (1986-09-01), Kajiura et al.
Ivin, K. et al., "Ring-Opening Polymerization and Addition Polymerization of 5-Methylenebicyclo[2.2.1)hept-2-ene", Macromol. Chem., Rapid Commun. 1, 473-476 (1980).

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