Claims
- 1. A photodegradable composition comprising a polyolefin and about from 0.1 to 10%, based on the weight of polyolefin, of an additive of the structure ##STR17##wherein one of the Z's is chlorine, bromine, or iodine, and the other Z is hydrogen, chlorine, bromine, or iodine, and each R'" is hydrogen or a lower alkyl radical.
- 2. The composition of claim 1 wherein the additive is 1,3-dibromo-5,5-dimethylhydantoin.
- 3. The composition of claim 1 wherein the additive is 3-bromo-5,5-dimethylhydantoin.
Parent Case Info
This is a division of our copending application Ser. No. 582,507, filed May 30, 1975, now U.S. Pat. No. 3,968,095, which in turn is a division of our prior application, Ser. No. 453,911, filed Mar. 22, 1974, now U.S. Pat. no. 3,932,352.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3865767 |
Boberg |
Feb 1975 |
|
Non-Patent Literature Citations (3)
Entry |
"Journal of Applied Polymer Science" vol. 20, pp. 463-472 (1976) Freedman et al. |
"Chemical Reviews" vol. 48, pp. 291-314 (1946) -- Djerassi. |
"Chemical Reviews" vol. 63, pp. 21-43 (1963) -- Filler. |
Divisions (2)
|
Number |
Date |
Country |
Parent |
582507 |
May 1975 |
|
Parent |
453911 |
Mar 1974 |
|