Flame retardant and flame-retardant resin composition
US6982294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2001 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Dec 24, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K21/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides flame retardants which can provide high flame retardancy by means of silicon compounds.A flame retardant comprising an aromatic group-containing organosiloxane compoundwherein said compound has the following mean composition formula (1), does not flow at 23° C., flows at 200° C., does not gelate when heated at 200° C. with stirring for 30 minutes, has a number average molecular weight of not less than 2,000 and at the same time, dissolves not less than 100 g in 1 L of a solvent toluene at 23° C.:R1mR2nSiO(4-m-n)/2 (1)in the formula, R1 represents a univalent aliphatic hydrocarbon group containing 1 to 4 carbon atoms; R2 represents a univalent aromatic hydrocarbon group containing 6 to 24 carbon atoms; R1 and R2 each may contain two or more species; and m and n are numbers satisfying 1.1≦m+n≦1.7 and 0.4≦n/m≦2.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.