Mineral filler fire retardant compositoin and method
US4886839A · kind A · utility
2Cited by
14References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Aug 24, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved mineral filler fire retardant composition and method are provided wherein the filler is surface treated with a polyfunctional isocyanate. This surface treatment reacts to form a polymeric coating thereby reducing both the free moisture and soluble soda level. This improved filler results in superior physical properties in polymer resins and improved processing characteristics in urethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.