Composition for flame-retardant cast panels made of (meth)acrylic polymers and panels obtained from this composition
US5747569A · kind A · utility
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1References
23Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 5, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to compositions for flame-retardant cast panels made of (meth)acrylic polymers. The composition comprises at least one (meth)acrylic ester monomer, (meth)acrylic acid and at least one phosphorus compound which is anhydrous and is chosen from phosphoric acids, phosphoric acid esters or their mixtures, optionally in combination with an optionally halogenated neutral phosphoric ester. The amount of (meth)acrylic acid and of phosphorus compound, by weight with respect to the total mixture constituting the composition, is such that the flame-retardancy coefficient FRC: ##EQU1## is greater than 0.95.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.