Phenol-furan resin composition
OwnerIstván Kovácsay, Lídia Kecskeméthy +1inventors
InventorsIstván Kovácsay, Lídia Kecskeméthy, Norbert Piukovics
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Abstract
The present invention fills a long-felt need for an improved phenol-furan resin composition used as a chimney liner with reduced combustibility, and for the preparation of pre-impregnated fiber-reinforced composite material and its use. The invention shows a higher tolerance for certain conditions that are damaging to other resin compositions including higher heat tolerance and higher tolerance for flue gases and other compounds.
Claims8
A liquid resin composition suitable for the production of pre-impregnated, fibre-reinforced composite material used as a chimney liner with improved fire and heat resistance, comprising:
- a resin mixture comprising:
- 60 to 80 percent by weight phenolic resin,
- 10 to 16.7 percent by weight furan resin or
- 10 to 16.7 percent by weight carbamide resin, and
- 7 to 10 percent by weight acid catalyst,
- characterised in that said liquid resin composition furthermore comprises:
- 3 to 13 percent by weight Na-metasilicate,
- 1 to 6 percent by weight a mix of melem and melam,
- 0 to 8 percent by weight ammonium-polyphosphate, and
- a maximum of 1 percent by weight boric compound calculated to elemental boron as fire-retardant additives.
Dependencies are inferred from the claim text.