Fire retardant composition comprising a melamine-aldehyde-phosphate condensate
US4195139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1978 |
| Grant date | Mar 25, 1980 |
| Priority date | — |
| Expiry date | May 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L61/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A melamine-aldehyde-phosphate condensation product which is useful as a fire-retardant, especially for plastics materials, and which is made by reacting melamine and at least one aldehyde, or a condensate of melamine and at least one aldehyde, with at least one oxyacid of phosphorus or precursor therefor or ester thereof until the condensation product is essentially non-acidic, the proportions of melamine and aldehyde being chosen such that the molar ratio of units derived from melamine: units derived from aldehyde in the condensation product is in the range 1:1.5 to 1:4.5, and the proportions of melamine and oxyacid of phosphorus or precursor therefor or ester thereof being chosen such that the molar ratio of units derived from melamine:phosphorus in the condensation product is in the range 1:0.4 to 1:1.7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.