摘要:
The present invention discloses novel flame retardant aqueous formulations comprising micronized particles of brominated epoxy polymers having a predetermined molecular weight and glass transition temperature, their use as flame retardants for textile applications, their preparation and flame-retarded textile fabrics prepared by using them.
摘要:
The invention provides a process for manufacturing biocidal compositions containing bromourea derivatives, including the reaction of salts or adducts of the urea derivatives with an oxidizer.
摘要:
The invention relates to compounds of the formula Ar(- CH2C6Br5)y, wherein Ar indicates a structure comprising one or more six-membered aromatic ring(s) and -CH 2 C 6 Br 5 indicates a pentabromobenzyl group, characterized in that at least one carbon atom of said six-membered aromatic ring(s) is bonded to the benzylic carbon of said -CH 2 C 6 Br 5 group, wherein y, which indicates the number of the -CH 2 C 6 Br 5 groups in said compound, is not less than 1. Processes for preparing the compounds and their use as flame retardants are also disclosed.
摘要:
The invention relates to a polyethylene composition comprising a mixture of flame retardants which are bromine-containing polymers. The polyethylene composition is useful in the manufacture of pallets. A process for making the polyethylene composition through a masterbatch route is also disclosed.
摘要:
The invention relates to a polyethylene composition comprising a mixture of flame retardants which are bromine-containing polymers. The polyethylene composition is useful in the manufacture of pallets. A process for making the polyethylene composition through a masterbatch route is also disclosed.
摘要:
A process for the production of calcium bromide from feed brines, particularly from Dead Sea End Brine (EB), is described. The process comprises extracting the feed brine in countercurrent with a composite organic solvent; optionally, purifying the extract to increase the ratio Br:Cl by contacting it with a part of the product; and washing the purified extract with water to yield the product, that is an aqueous solution of CaBr2. The composite solvent comprises an anionic extractant, such as an amine or a mixture of amines; a cationic extractant, such as a carboxylic phosphoric or sulphonic acid or a mixtures of said acids; and diluent/modifier, which is an organic solvent. An apparatus for the production of calcium bromide is also described, which comprises: an extraction battery; optionally, a purification battery; and a washing battery, wherein at least one of the batteries comprises a plurality of stages.
摘要:
The invention provides a process for preparing bronopol, which process comprises charging a reaction vessel with water, bromopicrin, nitromethane and paraformaldehyde, gradually feeding a base into said reaction vessel under stirring, bringing the reaction to completion and separating bronopol from the aqueous reaction mixture.
摘要:
The present invention discloses a flame retardant formulation comprising tetrabromobisphenol A bis(2,3-dibromopropyl ether) (FR-720) particles in a liquid carrier, wherein the particle size of at least 50 % of said particles (d50) is smaller than about 50 microns. Furthermore, the present invention discloses a flammable textile fabric, coated by a flame retardant film comprising FR-720 particles which are substantially homogeneously dispersed in or on the flammable textile fabric, and further of a process of preparing these flame retardant formulations and of a process of applying these formulations onto a flammable textile fabric.