JPS55108431A - Rubber composition - Google Patents
Rubber compositionInfo
- Publication number
- JPS55108431A JPS55108431A JP1650479A JP1650479A JPS55108431A JP S55108431 A JPS55108431 A JP S55108431A JP 1650479 A JP1650479 A JP 1650479A JP 1650479 A JP1650479 A JP 1650479A JP S55108431 A JPS55108431 A JP S55108431A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- particles
- vulcanized rubber
- carboxylated modified
- diene polymer
- 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.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: To provide rubber compsn. having good heat build-up, failure characteristics and wearing characteristics, obtd. by grinding waste tire to obtain particles of vulcanized rubber, treating the surfaces of the particles of vulcanized rubber with carboxylated modified diene polymer, blending the treated particles of vulcanized rubber with natural rubber and/or synthetic rubber and then vulcanizing the resulting blend.
CONSTITUTION: There is provided rubber compsn. obtd. by grinding waste tire to obtain particles of vulcanized rubber, treating the surfaces of the particles of vulcanized rubber with carboxylated modified diene polymer having a number-average MW of not less than 5,000, blending (B) the treated particles of vulcanized rubber with (A) natural rubber and/or synthetic rubber, and then vulcanizing the resulting blend. The particles of vulcanized rubber are blended with 100pts.wt. of the natural rubber and/or the synthetic rubber in an amount of not more than 40pts.wt. based on the weight of the vulcanized rubber before the surface treatment. Examples of carboxylated modified diene polymer are those having a number-average MW of not less than 5,000, preferably 5,000W100,000 such as carboxylated modified polyisoprene, carboxylated modified polybutadiene. Preferably, the number of carboxyl gp. in the carboxylated modified diene polymer is 1W20 per 100 of carbon atoms in the main chain of the polymer. Preferably, the surface treatment is carried out in an amount of 1W100pts.wt. of carboxylated modified diene polymer per 100pts.wt. of the particles of the vulcanized rubber.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1650479A JPS55108431A (en) | 1979-02-15 | 1979-02-15 | Rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1650479A JPS55108431A (en) | 1979-02-15 | 1979-02-15 | Rubber composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55108431A true JPS55108431A (en) | 1980-08-20 |
Family
ID=11918099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1650479A Pending JPS55108431A (en) | 1979-02-15 | 1979-02-15 | Rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55108431A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01501397A (en) * | 1986-10-06 | 1989-05-18 | ラバー リサーチ イラストメリックス，インコーポレッド | Tire with tread obtained from granulated cured rubber |
| WO2003048236A1 (en) * | 2001-12-04 | 2003-06-12 | Bridgestone Corporation | Powdery rubber having unevened surface and rubber compositions and tires using the same |
-
1979
- 1979-02-15 JP JP1650479A patent/JPS55108431A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01501397A (en) * | 1986-10-06 | 1989-05-18 | ラバー リサーチ イラストメリックス，インコーポレッド | Tire with tread obtained from granulated cured rubber |
| WO2003048236A1 (en) * | 2001-12-04 | 2003-06-12 | Bridgestone Corporation | Powdery rubber having unevened surface and rubber compositions and tires using the same |
| US7344777B2 (en) | 2001-12-04 | 2008-03-18 | Bridgestone Corporation | Powder rubber subjected to treatment of making unevenness on surface thereof and rubber composition using the same and tire |
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