Claims
- 1. A multi-layer material having at least one layer comprising a styrenic block copolymer having a reduced viscosity of 0.01 to 20 dl/g as measured at a concentration of 0.05 g/dl in 1,2,4-trichlorobenzene at 135.degree. C., which comprises at least one (A) structural unit represented by the formula ##STR7## wherein R.sup.1 is a hydrogen atom, a halogen atom or a substituent having at least one atom selected from carbon, tin and silicon and may form a condensed ring together with a benzene ring, m is an integer from 1 to 5 and when m is 2 or more, each R.sup.1 may be the same or different, the stereoregularity of the main chain of said structural units being highly syndiotactic; and at least one (B) structural unit represented by the formula ##STR8## wherein R.sup.2 is a hydrogen atom, a halogen atom or a hydrocarbon radical having 1 to 8 carbon atoms, R.sup.3 is a heteroatom or a group containing a heteroatom, n is an integer from 1 to 5 and when n is 2 or more, each R.sup.3 may be the same or different, said structural unit (B) being different from the structural unit (A) and contained in an amount of 10.sup.-4 to 10 mol %.
- 2. The multi-layer material as claimed in claim 1, wherein R.sup.3 in the structural unit (B) is selected from the group consisting of an oxygen atom, a nitrogen atom, a sulfur atom, a phosphorous atom, a bromine atom and a substituent having at least one of said atoms.
- 3. A resin composition which comprises (Y) a styrenic block copolymer having a reduced viscosity of 0.01 to 20 dl/g as measured at a concentration of 0.05 g/dl in 1,2,4-trichlorobenzene at 135.degree. C. which comprises at least one (A) structural unit represented by the formula ##STR9## wherein R.sup.1 is a hydrogen atom, a halogen atom or a substituent having at least one atom selected from carbon, tin and silicon and may form a condensed ring together with a benzene ring, m is an integer from 1 to 5 and when m is 2 or more, each R.sup.1 may be the same or different, the stereoregularity of the main chain of said structural units being highly syndiotactic; and at least one (B) structural unit represented by the formula ##STR10## wherein R.sup.2 is a hydrogen atom, a halogen atom or a hydrocarbon radical having 1 to 8 carbon atoms, R.sup.3 is a heteroatom or a group containing a heteroatom, n is an integer from 1 to 5 and when n is 2 or more, each R.sup.3 may be the same or different, said structural unit (B) being different from the structural unit (A) and contained in an amount of 10.sup.-4 to 10 mol % and
- (Z) at least one member selected from among a thermoplastic resin, an inorganic filler and an organic filler.
- 4. The resin composition as claimed in claim 3, wherein R.sup.3 in the structural unit (B) is selected from the group consisting of an oxygen atom, a nitrogen atom, a sulfur atom, a phosphorous atom, a bromine atom and a substituent having at least one of said atoms.
- 5. A multi-layer material which comprises at least one layer composed of the resin composition as set forth in claim 4.
- 6. A multi-layer material which comprises at least one layer composed of the resin composition as set forth in claim 3.
- 7. A process for producing a styrenic block copolymer having a reduced viscosity of 0.01 to 20 dl/g as measured at a concentration of 0.05 g/dl in 1,2,4-trichlorobenzene at 135.degree. C. which comprises polymerizing at least one styrenic monomer represented by the formula ##STR11## wherein R.sup.1 is a hydrogen atom, a halogen atom or a substituent having at least one atom selected from carbon, tin and silicon and may form a condensed ring together with a benzene ring, m is an integer from I to 5 and when m is 2 or more, each R.sup.1 may be the same or different, in the presence of a catalyst comprising as principal components (1) a transition metal compound and (b) an aluminoxane; or (2) (a) a transition metal compound and (c) a compound capable of reacting with said transition metal compound to form an ionic complex, to substantially form a polymer having highly syndiotactic stereoregularity; and subsequently reacting said polymer with at least one styrenic monomer which is different from the preceding monomer and represented by the formula ##STR12## wherein R.sup.2 is a hydrogen atom, a halogen atom or a hydrocarbon radical having 1 to 8 carbon atoms, R.sup.3 is a heteroatom or a group containing a heteroatom, n is an integer from 1 to 5 and when n is 2 or more, each R.sup.3 may be the same or different to proceed with copolymerization reaction.
- 8. The process according to claim 7, wherein R.sup.3 is selected from the group consisting of an oxygen atom, a nitrogen atom, a sulfur atom, a phosphorus atom, a bromine atom and a substituent having at least one of said atoms.
Priority Claims (1)
Number |
Date |
Country |
Kind |
128596 |
May 1992 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 08/063,745, filed on May 20, 1993.
US Referenced Citations (8)
Divisions (1)
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Number |
Date |
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Parent |
63745 |
May 1993 |
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