Three-component intumescent flame retardant
September 5, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3671487 3810086 Nonburning, nondripping, char-forming, polypropylene composition Flame retardant, non-dripping compositions of polyphenylene ether and acrylonitrile-butadiene-styrene Flame-resisting intumescent paints Self-extinguishing polymeric compositions Flame retardant, non-dripping linear polyester compositions Flame retardant non-dripping polycarbonate compositions Self-extinguishing polymeric products based on polyolefins Flame-retarding composition for polymers and self-extinguishing polymeric products so obtained Patent #: 4997876 InventorsAssigneeApplicationNo. 755271 filed on 09/05/1991US Classes:524/101, Three oxygen atoms are directly bonded to three nuclear carbon atoms of the nitrogen ring, e.g., (iso) cyanurate, etc.524/140, P directly bonded to oxygen only524/416, Ammonium phosphate524/492Mixing inorganic silicon-containing material having color or numerical limitations other than amount, e.g., included herein are m.p., chemical composition, particle size, surface area, etc., or composition or product thereof, DNRMExaminersPrimary: Michl, Paul R.Assistant: Rajguru, U. K. Attorney, Agent or FirmInternational ClassesC08J 005/10C08K 005/34 C08L 023/00 AbstractAn improved flame retardant polyolefin is disclosed which comprises a combination of ammonium polyphosphate; tris(2-hydroxyethyl) isocyanurate; and melamine cyanurate; and a selected silica in an amount from 0.5 percent to an amount equal to one-half the amount by weight of THEIC, wherein the selected silica meets defined surface area, particle size and absorption criteria.Other References
Field of SearchThree oxygen atoms are directly bonded to three nuclear carbon atoms of the nitrogen ring, e.g., (iso) cyanurate, etc.P directly bonded to oxygen only Ammonium phosphate Mixing inorganic silicon-containing material having color or numerical limitations other than amount, e.g., included herein are m.p., chemical composition, particle size, surface area, etc., or composition or product thereof, DNRM | |
