Claims
- 1. A composition of atactic polystyrene blended with a small amount of benzoin, based on the weight of the polystyrene, sufficient to accelerate the photodegradation of said composition.
- 2. A composition, as defined in claim 1, containing about 1 % benzoin based on the weight of the polystyrene.
- 3. A composition of atactic polystyrene blended with containing from about 0.01 to about 5% of benzoin, based on the weight of the polystyrene, sufficient to accelerate photodegradation of the polystyrene.
- 4. A composition, as defined in claim 3 wherein the polystyrene is polystyrene foam.
- 5. A composition, as defined in claim 3, which in addition contains a stearate of cobalt or manganese in amount providing from about 0.0001 to about 5% of the metal component of said stearate, based on the weight of the polystyrene, sufficient in combination with the benzoin to synergistically accelerate the photodegradation of the polystyrene.
- 6. A composition, as defined in claim 5 that contains, based on the weight of the polystyrene, one percent of cobalt or manganese stearate.
- 7. A composition, as defined in claim 6, in which the polystyrene is polystyrene foam.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part of U.S. Ser. No. 436,322 filed Jan. 24, 1974, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3830764 |
Hudgin et al. |
Aug 1974 |
|
3888804 |
Swanholm et al. |
Jun 1975 |
|
3941759 |
Taylor et al. |
Mar 1976 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
436322 |
Jan 1974 |
|