Claims
- 1. A floating vulcanized rubber fender consisting of a matrix, in solid form, manufactured from synthetic rubber having a density not exceeding 0.91 which is free of gas-filled or air-filled closed pores, and from 5-10 parts by weight of carbon black per 100 parts by weight of said rubber, said carbon black having a particle size smaller than 35 nanometers and which is dispersed throughout said matrix as a filler; said fender having a density not exceeding 0.97, a modulus at 25% elongation of at least 3.5 kg/cm.sup.2, a tear resistance of at least 10 kg/cm.sup.2 and the shape of a thick-walled hollow cylinder with an outer diameter of between substantially 0.3 and 2 m. and an inner diameter varying accordingly between substantially 0.15 and 11/2 m; said carbon black being incorporated as a filler in said solid form matrix of rubber solely for its small particle size and high structure, said carbon black having a dibutyl phthalate oil absorption higher than 130 ml/100 gm, and a specific surface by the BET method of more than 130 m.sup.2 /gm.
- 2. A floating fender according to claim 1 wherein said synthetic rubber consists of EDPM rubber.
- 3. A floating fender according to claim 1 wherein said synthetic rubber comprises ethylene-propylene-diene synthetic rubber.
- 4. A floating fender according to claim 1 wherein said carbon black has a dibutyl phthalate oil absorption value of from 300 to 400 ml/100 grams of carbon black, a particle size of substantially 30 nanometers, and a specific surface of at least 800 m.sup.2 /gm.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7416838 |
Dec 1974 |
NLX |
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Parent Case Info
This application is a continuation-in-part of application Ser. No. 851,305, filed Nov. 14, 1977, now abandoned, which is a continuation of application Ser. No. 643,019, filed Dec. 22, 1975, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3963647 |
Straub |
Jun 1976 |
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Foreign Referenced Citations (1)
Number |
Date |
Country |
127197 |
Nov 1944 |
AUX |
Non-Patent Literature Citations (1)
Entry |
Kraus. Gerard, Reinforcement of Elastomers, Interscience Pub., New York, 1965, pp. 324-326. |
Continuations (1)
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Number |
Date |
Country |
Parent |
643019 |
Dec 1975 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
851305 |
Nov 1977 |
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