ROUGE POWDER: See Polishes.
ROUGH STUFF: See Wood.
ROUP CURES: See Veterinary Formulas.
RUBBER
Artificial Rubber.
Austin G. Day tried hundreds of experiments and took out many patents for rubber substitutes. He was in a measure successful, his “Kerite” compound proving of great value and being a result of his seeking for something that would wholly supplant rubber. As far back as 1866 he made public the results of some of his work, giving as formulas for rubber substitutes the following compounds:
| I.— | Linseed oil | 2 pounds |
|---|---|---|
| Cottonseed oil | 1 pound | |
| Petroleum | 2 pounds | |
| Raw turpentine | 2 pounds | |
| Sulphur | 2 pounds | |
| Boil 2 hours. | ||
| II.— | Linseed oil | 2 pounds |
| Cottonseed oil | 1 pound | |
| Petroleum | 1 pound | |
| Raw turpentine | 2 pounds | |
| Castor oil | 1 pound | |
| Sulphur | 2 pounds | |
| Boil 1/2 hour. | ||
| III.— | Linseed oil | 2 pounds |
| Cottonseed oil | 1 pound | |
| Petroleum | 1 pound | |
| Raw turpentine | 1/2 pound | |
| Liquid coal tar | 3 pounds | |
| Peanut oil | 1 pound | |
| Spirits turpentine | 1 pound | |
| Sulphur | 4 pounds | |
| Boil 35 minutes. | ||
| IV.— | Linseed oil | 2 pounds |
| Cottonseed oil | 1 pound | |
| Petroleum | 2 pounds | |
| Raw turpentine | 1/2 pound | |
| Liquid coal tar | 2 pounds | |
| Spirits turpentine | 1 pound | |
| Rubber | [ ] pound | |
| Sulphur | 2 pounds | |
| Boil 1 hour. | ||
In 1871 Mr. Day had brought his experimenting down to the following formula:
| V.— | Cottonseed oil | 14 pounds |
|---|---|---|
| Linseed oil | 14 pounds | |
| Asphaltum | 8 pounds | |
| Coal tar | 8 pounds | |
| Sulphur | 10 pounds | |
| Camphor | 1/2 pound |
In this the tar and asphaltum were first mixed with the cottonseed oil, after which was added the linseed oil and camphor, and, last of all, the sulphur, when the temperature was about 270° F.