0682042-A1 is referenced by 9 patents and cites 5 patents.

A novel propylene elastomer having such characteristics that: (1) it is composed of 50-95 mole % of units derived from propylene and 50-5 mole % of units derived from 1-butene, (2) it has a triad tracticity (mm faction) of at least 90 % as determined by C-NMR spectrometry (in hexachlorobutadiene using tetramethylsilane as the internal standard), (3) it has a limiting viscosity of 0.1-12 dl/g (at 135 DEG C in decalin), (4) it has a molecular weight distribution (Mw/Mn) of 3 or less, and (5) it has a randomness parameter (B) of 1.0 to 1.5, preferably 1.0 to 1.3.; In addition, it is desirable that: (6) it has a melting point (Tm) of 60-140 DEG C and the following relationship holds between the Tm and the 1-butene unit content (M, mole %): -2.6 M + 130 /= -1.5 M + 75, the elastomer is excellent in rigidity, heat and scratch resistances, transparency, heat sealability, and blocking resistance. It can be produced by using a specified transition metal compound as the catalyst.

Title
Propylene elastomer.
Application Number
EP19950901603 19941129
Publication Number
0682042 (A1)
Application Date
November 29, 1994
Publication Date
November 15, 1995
Inventor
Tsutsui Toshiyuki Mitsui Petro
JP
Sugi Masahiro Mitsui Petrochem
JP
Hashimoto Mikio Mitsui Petroch
JP
Tanizaki Tatsuya Mitsui Petroc
JP
Kiso Yoshihisa Mitsui Petroche
JP
Fukuoka Daisuke Mitsui Petroch
JP
Kawasaki Masaaki Mitsui Petroc
JP
Mizuno Akira Mitsui Petrochemi
JP
Ueda Takashi Mitsui Petrochemi
JP
Assignee
Mitsui Petrochemical
JP
IPC
C08F 210/08
C08F 210/06
C08F 04/642
C08F 210/00
C08F 110/00
C08F 10/00
C08F 04/00
C07F 17/00
C07C 49/00
C07C 45/00
C08F 210/16
C08F 210/06
C08F 110/06
C08F 10/06
C08F 10/00
C08F 04/642
C07F 17/00
C07C 49/697
C07C 49/67
C07C 45/46
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