Intumescent, halogen-free, silicon-phosphorus-nitrogen based polymeric flame retardant
AssigneeDow Global Technologies LLC
InventorsJourney L. Zhu, Given Jing Chen, Jinder Jow, Kenny Chun Hui Su, Ping Wei, Chen Wang
Life of this patent
Estimating the term…
Abstract
This invention provides intumescent, halogen-free, polymeric, silicon-phosphorus-nitrogen (SPN) flame retardant, a process for their preparation, and systems, compositions and articles into which they are incorporated. The inventive intumescent, halogen-free, SPN polymer compositions afford good flame retardant performance at a lower loading compared to conventional phosphorus and nitrogen based intumescent flame retardant compositions.
Claims18
An intumescent, halogen-free, silicon-phosphorus-nitrogen (IHFSPN) polymer of Formula (I)
- wherein “n” is 2 to 100 and R1 through R6, may be the same or different from each other, and selected from:
- hydrogen, C1-C5 alkyl, C3-C5 hydroxyalkyl, C3-C4 alkenyl, C6-C10 aryl, C7-C8 arylalkyl, or a cycloalkyl structure.
An intumescent, halogen-free, silicon-phosphorus-nitrogen (IHFSPN) polymer of Formula (II)
- wherein “n” is 2 to 100.
Dependencies are inferred from the claim text.