UV stable fire-resistant glazing laminates
AssigneePyroguard UK Limited
InventorsRichard Ainsworth, Vincent Crook, John Holland, Saminu Magami, Catherine Norris
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Abstract
This specification generally relates to aqueous compositions for preparing UV stable fire-resistant interlayers. It also relates to UV stable fire-resistant glazing laminates comprising such interlayers, the use of such glazing laminates in construction, and constructions comprising such glazings. An example aqueous composition comprises a mixed alkali metal silicate of general formula SiO2·M2O, where M is K or Na, and other organic and inorganic additives. Glazings with interlayers made with such aqueous compositions are simple to prepare and demonstrate good UV stability and fire-protection properties.
Claims17
An aqueous composition for preparing a castable UV-stable fire-resistant interlayer, comprising:
- a mixed alkali metal silicate of general formula SiO2·K2O·M2O, where:
- M is Li and/or Na,
- the weight ratio of SiO2:K2O is between about 2.5:1 and about 4.0:1, and
- the weight ratio of SiO2:M2O is between about 2.2:0.1 and about 4.5:0.1;
- about 0.5% w/w-about 5% w/w of a hydroxylated amine compound;
- about 10% w/w-about 20% w/w of a polyhydric organic compound;
- and
- about 15% w/w-about 35% w/w water.
Dependencies are inferred from the claim text.