Particulate ammonium phosphate of small size
First Claim
1. In a composition comprising polyolefin and particles of ammonium phosphate selected from the group consisting of ammonium dihydrogen phosphate, diammonium hydrogen phosphate and a mixture of ammonium dihydrogen phosphate and diammonium hydrogen phosphate, which particles are distributed throughout said polyolefin, the improvement wherein at least 90 percent by weight of said particles of ammonium phosphate have sizes of 150 micrometers or smaller.
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Accused Products
Abstract
Small particles of ammonium dihydrogen phosphate, diammonium hydrogen phosphate, or a mixture thereof provide a higher Limiting Oxygen Index ("LOI") to polyolefin compositions containing the small particles than do larger particles of the same substance. In many instances, improvement in one or more other properties, such as for example, processability, appearance, UL-94 rating, tensile strength, tensile modulus, and/or elongation at break is also obtained.
19 Citations
17 Claims
- 1. In a composition comprising polyolefin and particles of ammonium phosphate selected from the group consisting of ammonium dihydrogen phosphate, diammonium hydrogen phosphate and a mixture of ammonium dihydrogen phosphate and diammonium hydrogen phosphate, which particles are distributed throughout said polyolefin, the improvement wherein at least 90 percent by weight of said particles of ammonium phosphate have sizes of 150 micrometers or smaller.
Specification