Claims
- 1. Carbon fibers for reinforcement of cement, which are obtained by applying, onto the surfaces of carbon fibers, a sizing agent which is any one of (1) esters of oleic acid and aliphatic monovalent alcohols, or (2) esters of oleyl alcohol and monovalent fatty acids, or (3) a polycondensation product of dimethyl terephthalate, ethylene glycol adipate and ethylene glycol.
- 2. The carbon fibers of claim 1, wherein said sizing agent is an ester of oleic acid and an aliphatic monovalent alcohol.
- 3. The carbon fibers of claim 1, wherein said sizing agent is an ester of oleyl alcohol and a monovalent fatty acid.
- 4. The carbon fibers of claim 1, wherein the amount of said sizing agent is in the range of about 0.5 to 10% by weight based on the weight of the carbon fibers.
Priority Claims (3)
Number |
Date |
Country |
Kind |
4-318302 |
Nov 1992 |
JPX |
|
4-318303 |
Nov 1992 |
JPX |
|
4-318304 |
Nov 1992 |
JPX |
|
Parent Case Info
This application is a Continuation of application Ser. No. 08/155,847, filed on Nov. 23, 1993, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2 368 571 |
May 1978 |
FRX |
Non-Patent Literature Citations (1)
Entry |
Chemical Abstracts, vol. 117, No. 10, Sep. 7, 1992, AN 96339a, F.Nakao, et al., "Carbon Fiber for Reinforcement of Cement". |
Continuations (1)
|
Number |
Date |
Country |
Parent |
155847 |
Nov 1993 |
|