Flame-retardant unsaturated polyester resins
AssigneeClariant GmbH
InventorsSebastian Hörold, Hans-Peter Schmitz
Life of this patent
Estimating the term…
Abstract
The invention relates to flame-retardant, unsaturated polyester resins made from unsaturated and saturated dicarboxylic acids and/or their anhydrides, from polyhydric alcohols, from one or more monomers and from a reactive phosphorus compound, which contain structural units of the formula IV where R1 is straight-chain or branched alkyl, cycloalkyl, aryl or alkylaryl groups having from 1 to 18 carbon atoms and R2 is methyl or hydrogen. The invention likewise relates to a process for preparing such polyester resins and to their use.
Claims21
A flame-retardant, unsaturated polyester resin made from unsaturated and saturated dicarboxylic acids and/or their anhydrides, from polyhydric alcohols, from one or more monomers and from a reactive phosphorus compound, which contains structural units of the formula IV
- where R1 is straight-chain or branched alkyl, cycloalkyl, aryl or alkylaryl groups having from 1 to 18 carbon atoms and R2 is methyl or hydrogen.
A process for preparing flame-retardant, unsaturated polyester resins from unsaturated and saturated dicarboxylic acids and/or their anhydrides, from polyhydric alcohols, from one or more monomers and from a reactive phosphorus compound, which comprises reacting a phosphorus compound of the formula I, II or III with unsaturated dicarboxylic acids or their anhydrides, saturated dicarboxylic acids and their anhyrides, and polyhydric alcohols, and then mixing with the monomer(s).
Dependencies are inferred from the claim text.