Appeal No. 1999-0465
Application No. 08/351,548
APPENDIX
52. A propylene block copolymer having such properties
that:
a melt flow rate (MFR) of said copolymer at 230EC under a
load of 2.16 kg is in the range of 0.1 to 500 g/10 min,
a pentad isotacticity M obtained from the following
5
formula (1A) using absorption intensity Pmmmm, Pw, S"(, S"*+
+ + 13
and I* * in a C-NMR spectrum of a boiled heptane-insoluble
component contained in said copolymer is in the range of 0.970
to 0.995,
a pentad tacticity M obtained from the following formula
3
(2A) using absorption intensity Pmmrm, Pmrmr, Pmrrr, Prmrr,
+ + + 13
Prmmr, Prrrr, Pw, S"(, S"* and I* * in a C-NMR spectrum of a
boiled heptane-insoluble component contained in said copolymer
is in the range of 0.0020 to 0.0050, and
a crystallinity of a boiled heptane-insoluble component
contained in said copolymer is 65% to about 79.3%;
M = Pmmmm
5
+ ++
Pw-2(S"( + S"* ) + 3(I* * ) (1A)
wherein
Pmmmm is absorption intensity of methyl groups present in
the third unit among continuous five propylene units which are
bonded to each other with meso form,
Pw is absorption intensity of all methyl groups in a
propylene unit;
S"( is absorption intensity of such secondary carbons
that are present in a main chain and out of two kinds of
tertiary carbons positioned nearest to said secondary carbons
1
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