Flameproof polymeric compositions containing acid piperazine pyrophosphate
US4599375A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1984 |
| Grant date | Jul 8, 1986 |
| Priority date | — |
| Expiry date | May 16, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3462
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymeric compositions endowed with high flame self-extinguishing properties, comprising a polymer selected from amongst olefinic polymers, polystyrene, polybutylene terephthalate, SAN and ABS copolymers, and also, for 100 parts of composition: PA0 (a) 20-50 parts of piperazine acid pyrophosphate; PA0 (b) 0-3 parts of at least a compound selected from TiO.sub.2, SiO.sub.2, silicic acid, in powder having particle size .ltoreq.0.1 micron; PA0 (c) 0-35 parts of at least a compound selected from ammonium polyphosphate, melamine, melamine phosphate and pyrophosphate, polycarboxypiperazine, ethylene urea/formaldehyde condensates, as a substitute for an equal weight of compound (a), and in such amount that the composition still contains at least 5 parts of such compound (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.