Title:
【発明の名称】垂直の磁気記録構成体
Document Type and Number:
Japanese Patent JPS62501806
Kind Code:
A
Abstract:
Diene polymers (A) have a weight-average mol.wt. of 10,000 to 1,000,000, measured according to GPC. They have general formula (1); where D1 represents a diene polymer (B); R1 represents an active hydrogen-free (1-20C) organic group, or a silicon cpd. m , n is O or an integer from 1 to 6. When n=0, m at least 1 and when m=0, n more than 2. (A) are obtd. by the coupling diene polymers (B) having Li-C bonds with multi-functional group compounds having diglycidylamino gps. The mol.wt. ratio of (A) to (B) after the coupling is 1.2 or more. The diene polymer (B) can be a conjugated diene polymer or a random copolymer of vinylaromatic compounds with conjugated dienes. The diene polymer (B) can also be a block copolymer between a vinyl aromatic compound and a conjugated diene that is a thermal elastic resin or a thermal elastomer. The rubber composition comprises a rubbery diene copolymer (more than 10 wt%), carbon black and a vulcanising agent.
Inventors:
Mallery Michael El
Application Number:
JP50097986A
Publication Date:
July 16, 1987
Filing Date:
January 22, 1986
Export Citation:
Assignee:
Digital Equipment Co-Pole-Chillon
International Classes:
B60C1/00; C08F12/26; C08C19/44; C08F8/30; C08F8/34; C08F8/42; C08F297/02; C08F297/04; C08G81/02; C08L9/00; C08L21/00; C08L53/00; C08L53/02; G11B5/127; G11B5/23; (IPC1-7): G11B5/127
Domestic Patent References:
| JPS5282318A | 1977-07-09 | |||
| JPS5736413A | 1982-02-27 | |||
| JPS57205810A | 1982-12-17 | |||
| JPS58115614A | 1983-07-09 | |||
| JPS5888812A | 1983-05-27 |
Attorney, Agent or Firm:
Minoru Nakamura