# US 7,465,761 B2 · Flame retardant composition with improved fluidity, flame retardant resin composition and molded products > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,465,761 B2 - Document ID: US7465761B2 - Status: Granted - Kind: B2 - Application number: 10/590,350 - Filed: 2005-02-22 - Published: 2007-08-02 - Granted: 2008-12-16 - Earliest claimed: 2004-02-24 - Assignees: Adeka Corporation - Inventors: Hisashi Murase; Masaru Nagahama; Kenichi Yoshikawa; Yuki Tanaka; Takayoshi Kaneda; Akihiro Yamaki - Web page: https://patentgrep.com/patent/US7465761B2 ## CPC - C08K 5/34928: {Salts} - C08K 5/5205: {Salts of P-acids with N-bases} - C09K 21/12: containing phosphorus - C08K 9/06: with silicon-containing compounds - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE ## Abstract The invention provides a flame retardant composition comprising 1-99 weight parts of a salt of piperazine and an inorganic compound selected from among piperazine phosphate, piperazine pyrophosphate and piperazine polyphosphate, or a mixture of two or more of these piperazine salts (ingredient (A)), 99-1 weight parts of a salt of melamine and an inorganic compound selected from among melamine phosphate, melamine pyrophosphate and melamine polyphosphate, or a mixture of two or more of these melamine salts (ingredient (B)) (wherein, the sum of ingredient (A) and ingredient (B) is 100 weight parts), 0-50 weight parts of an arbitrary ingredient (ingredient (C)), and 0.01-20 weight parts of a silicone oil having a viscosity at 25° C. of 5000 mm2/s (ingredient (D)) which is added thereto. This flame retardant not only has superior flame retarding properties, but also has enhanced powder properties and anti-hygroscopic properties, and when it is added to a resin, there is little change of electrical resistance. ## Claims ### Claim 1 A flame retardant composition comprising 1-99 weight parts of a salt of piperazine and an inorganic compound selected from among piperazine phosphate, piperazine pyrophosphate and piperazine polyphosphate, or a mixture of two or more of these piperazine salts (ingredient (A)), 99-1 weight parts of a salt of melamine and an inorganic compound selected from among melamine phosphate, melamine pyrophosphate and melamine polyphosphate, or a mixture of two or more of these melamine salts (ingredient (B)) (wherein, the sum of ingredient (A) and ingredient (B) is 100 weight parts), 0-50 weight parts of an arbitrary ingredient (ingredient (C)), and 0.01-20 weight parts of a silicone oil having a viscosity at 25° C. of 5000 mm2/s or less(ingredient (D)) which is added to the composition comprising the aforementioned ingredients (A)-(C) and treats them. ### Claim 2 (depends on 1) The flame retardant composition according to claim 1, wherein the salt of piperazine and an inorganic compound (ingredient (A)) contains 80 weight percent or more of piperazine pyrophosphate, the salt of melamine and an inorganic compound (ingredient (B)) contains 80 weight percent or more of melamine pyrophosphate, and the arbitrary ingredient (C) is contained to the extent of 10 weight parts or less relative to 100 weight parts of the total amount of ingredient (A) and ingredient (B). ### Claim 3 (depends on 1, 2) The flame retardant composition according to claim 1 or 2, wherein the silicone oil (ingredient (D)) is methylhydrogen polysiloxane. ### Claim 4 (depends on 1) The flame retardant composition according to claim 1, wherein the silicone oil (ingredient (D)) is a mixture of a silicone oil having only a methylhydrogen polysiloxane structure with a silicone oil whereof at least part has a dimethyl polysiloxane structure. ### Claim 5 (depends on 1) The flame retardant composition according to claim 1, wherein the silicone oil (ingredient (D)) has a viscosity at 25° C. of 1000 mm2/s or less. ### Claim 6 (depends on 1) A flame retardant polyolefin resin composition obtained by blending 3-70 weight parts of the flame retardant composition according to claim 1 with 100 weight parts of a polyolefin resin. ### Claim 7 (depends on 6) A flame retardant polyolefin resin composition molded product obtained by molding the flame retardant polyolefin resin composition according to claim 6. ### Claim 8 (depends on 2) The flame retardant composition according to claim 2, wherein the silicone oil (ingredient (D)) is a mixture of a silicone oil having only a methylhydrogen polysiloxane structure with a silicone oil whereof at least part has a dimethyl polysiloxane structure. ### Claim 9 (depends on 2) The flame retardant composition according to claim 2, wherein the silicone oil (ingredient (D)) has a viscosity at 25° C. of 1000mm2/s or less. ### Claim 10 (depends on 2) A flame retardant polyolefin resin composition obtained by blending 3-70 weight parts of the flame retardant composition according to claim 2 with 100 weight parts of a polyolefin resin. ### Claim 11 (depends on 10) A flame retardant polyolefin resin composition molded product obtained by molding the flame retardant polyolefin resin composition according to claim 10. ### Claim 12 (depends on 4) The flame retardant composition according to claim 4, wherein the silicone oil (ingredient (D)) has a viscosity at 25° C. of 1000mm2/s or less. ### Claim 13 (depends on 4) A flame retardant polyolefin resin composition obtained by blending 3-70 weight parts of the flame retardant composition according to claim 4 with 100 weight parts of a polyolefin resin. ### Claim 14 (depends on 13) A flame retardant polyolefin resin composition molded product obtained by molding the flame retardant polyolefin resin composition according to claim 13. ### Claim 15 (depends on 12) The flame retardant composition according to claim 12, wherein the silicone oil (ingredient (D)) is methylhydrogen polysiloxane. ### Claim 16 (depends on 13) The flame retardant composition according to claim 13, wherein the silicone oil (ingredient (D)) is methylhydrogen polysiloxane. ### Claim 17 (depends on 15) A flame retardant polyolefin resin composition obtained by blending 3-70 weight parts of the flame retardant composition according to claim 15 with 100 weight parts of a polyolefin resin. ### Claim 18 (depends on 16) A flame retardant polyolefin resin composition obtained by blending 3-70 weight parts of the flame retardant composition according to claim 16 with 100 weight parts of a polyolefin resin. ### Claim 19 (depends on 1) The flame retardant composition according to claim 1, which contains 0 weight parts of an arbitrary ingredient (ingredient (C)).