Fire retardant unsaturated polyesters

Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond

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260 40R, 260863, 260DIG24, 428921, C08L 6706

Patent

active

040138151

ABSTRACT:
Highly fire retardant unsaturated polyester resins which exhibit low burning rates, low smoke generation and beneficial char formation in the presence of a flame are provided by incorporating up to about 5 weight percent of iron or an iron compound in a halogen containing unsaturated polyester of a polycarboxylic compound and a polyhydric alcohol having greater than about 4 weight percent halogen based on the weight of unsaturated polyester resin and a copolymerizable unsaturated monomer. The unsaturated polyester resins are copolymerized with an unsaturated monomer for use in castings, laminated products and other reinforced articles.

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Unexamined German Patent Application No. 2,127,613, opened for inspection 12/1971, Kelly (translation).

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