Sheet or film composed of cyclo-olefin polymer

Details Sheet or film composed of cyclo-olefin polymer Sheet or film composed of cyclo-olefin polymer

1990-02-20

1993-06-08

Teskin, Fred

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 98, 525193, 525194, 525210, 525211, 524505, 524518, 524553, C08L 2326, C08L 4500, C08L 5302

Patent

active

052180492

ABSTRACT:
A sheet or a film composed of at least one cyclo-olefin polymer selected from the group consisting of ring-opened polymers derived from at least one cyclo-olefin of formula (I) ##STR1## wherein R.sup.1 to R.sup.12, independently from each other, represent a member selected from the class consisting of a hydrogen atom, halogen atoms and hydrocarbon groups; two of R.sup.9 to R.sup.12 may be linked to each other together with the carbon atoms to which they are bonded to form a monocyclic or polycyclic group which may contain a double bond; R.sup.9 and R.sup.10, or R.sup.11 and R.sup.12 may each form an alkylidene group together with the carbon atoms to which they are bonded; and n is 0 or a positive integer,
ring-opened copolymers derived from the cyclo-olefins of formula (I), hydrogenation products of said polymer or copolymers and addition polymers of the cyclo-olefins of formula (I) with ethylene, said cyclo-olefin polymer having an intrinsic viscosity [.eta.], measured in decalin at 135.degree. C., of 0.01 to 10 dl/g and a softening temperature of at least 70.degree. C.

REFERENCES:
patent: 2932630 (1960-04-01), Robinson et al.
patent: 4614778 (1986-09-01), Kajiura et al.
patent: 4874808 (1989-10-01), Minami et al.
patent: 4931520 (1990-06-01), Yamanashi et al.
patent: 4992511 (1991-02-01), Yamamoto et al.
English translation of Japanese Kokai Pat. No. 60-26024 to Fukazawa et al, published Feb. 8, 1985.

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