JPS57109818A - Styrene-butadiene block copolymer - Google Patents
Styrene-butadiene block copolymerInfo
- Publication number
- JPS57109818A JPS57109818A JP18619580A JP18619580A JPS57109818A JP S57109818 A JPS57109818 A JP S57109818A JP 18619580 A JP18619580 A JP 18619580A JP 18619580 A JP18619580 A JP 18619580A JP S57109818 A JPS57109818 A JP S57109818A
- Authority
- JP
- Japan
- Prior art keywords
- content
- copolymer
- block
- bonded
- vinyl bond
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Graft Or Block Polymers (AREA)
Abstract
PURPOSE: To provide the titled copolymer composed of 3-kinds of polymer blocks having different vinyl bond content in the butadiene (Bd) segment and bonded styrene (St) content, and having specific Mooney viscosity and excellent wet-skid resistance, rolling friction resistance, etc.
CONSTITUTION: The titled A-B-C type copolymer is composed of (A) a poly-Bd block having a vinyl bond content of 10W50wt%, (B) a copolymer block having a bonded styrene content of 10W50wt% and a vinyl bond content in the Bd segment of 10W50wt%, and (C) a copolymer block having a bonded St content of 1W30wt%, and a vinyl bond content in the Bd segment of ≥60wt%, wherein the amount of each block in the copolymer is ≥10wt%, the total bonded St content in the block copolymer is 10W40wt% and the total content of the vinyl structure in the whole bonded Bd is 30W70wt%. The copolymer can be prepared by charging predetermined amounts of Bd and St in a reactor together with a micro- structure controlling agent (e.g. tetrahydrofuran), and carrying out the polymerization to obtain the blocks in an arbitrary order.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18619580A JPS57109818A (en) | 1980-12-26 | 1980-12-26 | Styrene-butadiene block copolymer |
US06/330,862 US4433109A (en) | 1980-12-17 | 1981-12-15 | Styrene-butadiene block copolymer |
EP19810305931 EP0054440B1 (en) | 1980-12-17 | 1981-12-17 | Styrene-butadiene block copolymer |
EP19840106266 EP0134909B1 (en) | 1980-12-17 | 1981-12-17 | Styrene-butadiene block copolymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18619580A JPS57109818A (en) | 1980-12-26 | 1980-12-26 | Styrene-butadiene block copolymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57109818A true JPS57109818A (en) | 1982-07-08 |
JPS6360770B2 JPS6360770B2 (en) | 1988-11-25 |
Family
ID=16184041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18619580A Granted JPS57109818A (en) | 1980-12-17 | 1980-12-26 | Styrene-butadiene block copolymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57109818A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58154711A (en) * | 1982-03-11 | 1983-09-14 | Mitsubishi Chem Ind Ltd | Styrene/conjugated diene rubber |
WO1987006250A1 (en) * | 1986-04-10 | 1987-10-22 | Sumitomo Chemical Company, Limited | Rubber composition |
US4812527A (en) * | 1986-10-30 | 1989-03-14 | Sumitomo Chemical Company, Limited | Rubber composition for tire treads containing dicarboxylic acid diester coupled block polymers |
US4918142A (en) * | 1986-11-29 | 1990-04-17 | Sumitomo Chemical Company, Limited | Rubber composition of tire tread containing block copolymer coupled with dicarboxylic acid ester |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4937415A (en) * | 1972-08-09 | 1974-04-08 | ||
JPS556651A (en) * | 1978-06-30 | 1980-01-18 | Iseki & Co Ltd | Stepless speed change driving gear of farm machine |
JPS6360769A (en) * | 1986-09-01 | 1988-03-16 | Nikon Corp | Thermal head |
-
1980
- 1980-12-26 JP JP18619580A patent/JPS57109818A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4937415A (en) * | 1972-08-09 | 1974-04-08 | ||
JPS556651A (en) * | 1978-06-30 | 1980-01-18 | Iseki & Co Ltd | Stepless speed change driving gear of farm machine |
JPS6360769A (en) * | 1986-09-01 | 1988-03-16 | Nikon Corp | Thermal head |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58154711A (en) * | 1982-03-11 | 1983-09-14 | Mitsubishi Chem Ind Ltd | Styrene/conjugated diene rubber |
WO1987006250A1 (en) * | 1986-04-10 | 1987-10-22 | Sumitomo Chemical Company, Limited | Rubber composition |
US4812527A (en) * | 1986-10-30 | 1989-03-14 | Sumitomo Chemical Company, Limited | Rubber composition for tire treads containing dicarboxylic acid diester coupled block polymers |
US4918142A (en) * | 1986-11-29 | 1990-04-17 | Sumitomo Chemical Company, Limited | Rubber composition of tire tread containing block copolymer coupled with dicarboxylic acid ester |
Also Published As
Publication number | Publication date |
---|---|
JPS6360770B2 (en) | 1988-11-25 |
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