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Scorch-resistant water-soluble flame-retardants for cellulose

阅读:128发布:2023-07-10

专利汇可以提供Scorch-resistant water-soluble flame-retardants for cellulose专利检索,专利查询,专利分析的服务。并且Cellulosic materials are made flame retardant, while minimizing the scorching and loss of strength of such materials when heated, by applying thereto a composition, preferably in aqueous solution, consisting essentially of at least one sodium or potassium salt of orthophosphoric acid or the various polymeric phosphoric acids, and at least one guanidine, guanylurea or biguanide salt of hydrochloric, hydrobromic, sulfuric, sulfamic or phosphoric acid, with the proportion, by weight, of the sodium or potassium salt to the guanidine, guanylurea or biguanide salt being in the range from 1:5 to 5:1, and with the total dry add-on of the composition being from 5 to 30 percent of the weight of the cellulosic material being treated therewith. The guanidine, guanylurea or biguanide salt constituent of the flame retardant composition may be provided in the form of the product of the condensation reaction of dicyandiamide with at least one of ammonium chloride, bromide, sulfamate or sulfate.,下面是Scorch-resistant water-soluble flame-retardants for cellulose专利的具体信息内容。

  • 2. A composition useful as a flame retardant and consisting essentially of from 1 to 5 parts, by weight, of a first substance selected from the group consisting of disodium phosphate, dipotassium phosphate and mixtures thereof, and from 1 to 5 parts, by weight, of a second substance selected from the group consisting of guanidine sulfamate, guanidine sulfate, guanidine hydrobromide, guanidine hydrochloride, guanidine phosphate, guanylurea sulfamate, guanylurea hydrobromide, guanylurea hydrochloride, guanylurea phosphate, and mixtures thereof.
  • 3. A composition useful as a flame retardant and consisting essentially of from 1 to 5 parts, by weight, of a first substance selected from the gRoup consisting of tetrasodium pyrophosphate, tetrapotassium pyrophosphate and mixtures thereof, and from 1 to 5 parts, by weight, of a second substance selected from the group consisting of guanidine sulfamate, guanidine sulfate, guanidine hydrobromide, guanidine hydrochloride, guanidine phosphate, guanylurea sulfamate, guanylurea hydrobromide, guanylurea hydrochloride, guanylurea phosphate, and mixtures thereof.
  • 4. A composition useful as a flame retardant and consisting essentially of from 1 to 5 parts, by weight, of a first substance selected from the group consisting of sodium and potassium tetraphosphates and hexametaphosphates and mixtures thereof, and from 1 to 5 parts, by weight, of a second substance selected from the group consisting of guanidine sulfamate, guanidine sulfate, guanidine hydrobromide, guanidine hydrochloride, guanidine phosphate, guanylurea sulfamate, guanylurea hydrobromide, guanylurea hydrochloride, guanylurea phosphate, and mixtures thereof.
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