Sheet or film composed of cyclo-olefin polymer

• US 5,218,049 A
• Filed: 02/20/1990
• Issued: 06/08/1993
• Est. Priority Date: 02/20/1989
• Status: Expired due to Term

• Current Assignee: Mitsui Chemicals Incorporated (Mitsui Chemicals)
• Original Assignee: Mitsui Petrochemical Industries, Ltd.
• Inventors: Yamamoto, Yohzoh, Nakagawa, Takasi
• Primary Examiner(s): Teskin, Fred
• Application Number:
  US07/482,256
• Time in Patent Office: 1,204 Days
• Field of Search: 526/281, 526/282, 526/283, 525/210, 525/211, 525/97, 525/98, 525/193, 525/194
• US Class Current: 525/97
• CPC Class Codes: C08G 61/02 Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
• CPC Class Codes: C08J 2365/00 Characterised by the use of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain C08J2307/00 - C08J2357/00, C08J2361/00 take precedence; Derivatives of such polymers
• CPC Class Codes: C08J 5/18 Manufacture of films or sheets
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C08L 65/00 Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain C08L7/00 - C08L57/00, C08L61/00 take precedence; Compositions of derivatives of such polymers

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 R¹ to R¹², independently from each other, represent a member selected from the class consisting of a hydrogen atom, halogen atoms and hydrocarbon groups; two of R⁹ to R¹² 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; R⁹ and R¹⁰, or R¹¹ and R¹² 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 [η], measured in decalin at 135° C., of 0.01 to 10 dl/g and a softening temperature of at least 70° C.

Claims

1. A sheet of a film composed of an intimate mixture of:

(A) at least one cyclo-olefin polymer selected from the group consisting of ring-opened polymers of at least one cyclo-olefin of formula (I) ##STR110## wherein R¹ to ¹², independently from each other, represent a member selected from the class consisting of a hydrogen atom, halogen atoms and hydrocarbon groups;

two of R⁹ to R¹² 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;

R⁹ and R¹⁰, or R¹¹ and R¹² may each form an alkylidene group together with the carbon atoms to which they are bonded; and

n is 0 or a positive integer, hydrogenation products of said polymers; and

addition polymers of the cyclo-olefins of formula (I) with ethylene, said cyclo-olefin polymer having an intrinsic viscosity [η

], measured in decalin at 135°

C., of 0.01 to 10 dl/g and a softening temperature of at least 70°

C.

(B) at least one flexible polymer in which a crosslinked structure is formed, said flexible polymer being selected from (1) flexible copolymer of ethylene, another alpha-olefin, and the cyclo-olefin of formula (I) which has an intrinsic viscosity, measured in decalin at 135°

C., of 0.01 to 10 dl/g, and a glass transition temperature of not more than 20°

C., (2) amorphous or low-crystalline alpha-olefin copolymers formed from at least two alpha-olefins and having a glass transition temperature of not more than 0°

C., (3) alpha-olefin/diene copolymers formed from at least two alpha-olefins and at least one conjugated diene and having a glass transition temperature of not more than 0°

C., (4) aromatic vinyl hydrocarbon/conjugated diene random or block copolymers having a glass transition temperature of not more than 0°

C. and (5) flexible polymers formed from isobutylene and flexible copolymers formed from isobutylene and conjugated dienes.

2. A sheet or film of claim 1, in which the crosslinked structure is formed after the cyclo-olefin polymer and the flexible polymer are blended.