摘要:
The present invention provides a power flame retardant for a halogen-containing vinyl resin, which comprises the following Components A, B and C. (A) 5 to 30 parts by weight of at least one of alkali metal compound of lithium, sodium and potassium calculated as the formula M.sub.2 O where M is an alkali metal; (B) 0.2 to 10 parts by weight of a perchloric acid radical in the form of the acid or a salt or amine thereof, calculated as perchloric acid radical; and (C) 1 to 50 parts by weight of a hydrophobic dispersing agent having a boiling point or a decomposition temperature of 200.degree. C. or higher. All the parts by weight are based on 100 parts by weight of antimony pentoxide (Sb.sub.2 O.sub.5). The flame retardant of the present invention does not impair transparency of the halogen-containing vinyl resin, and also does not worsen various physical properties such as thermal stability and weathering resistance. The invention also provides (1) flame retardant halogen containing resins and (2) a process for preparing the powdered flame retardant.
摘要翻译:本发明提供含卤乙烯基树脂的电力阻燃剂,其包含以下组分A,B和C.(A)5至30重量份的锂,钠和钾的碱金属化合物 按公式M2O计算,其中M为碱金属; (B)0.2至10重量份以酸或其盐或胺形式的高氯酸基团,其计为高氯酸根; 和(C)1〜50重量份的沸点或分解温度为200℃以上的疏水性分散剂。 所有重量份均基于100重量份的五氧化二锑(Sb 2 O 5)。 本发明的阻燃剂不会损害含卤乙烯基树脂的透明性,也不会使各种物理性质如热稳定性和耐候性恶化。 本发明还提供(1)阻燃卤素树脂和(2)制备阻燃剂的方法。
摘要:
A melamine polymetaphosphate having a solubility of from 0.01 to 0.10 g/100 ml in water at 25.degree. C., a pH of from 2.5 to 4.5 in the form of a 10 wt % aqueous slurry at 25.degree. C. and a melamine content of from 1.0 to 1.1 mol per mol of phosphorus atom.A process for producing such a melamine polymetaphosphate, which comprises the following steps (a) and (b):(a) a step of mixing melamine, urea and an aqueous orthophosphoric acid solution containing at least 40 wt % of orthophosphoric acid, in such a ratio that melamine is from 1.0 to 1.5 mol per mol of orthophosphoric acid and urea is from 0.1 to 1.5 mol per mol of orthophosphoric acid, at a temperature of from 0 to 140.degree. C., to form a reaction mixture, and stirring the reaction mixture at a temperature of from 0 to 140.degree. C., while removing water, to obtain a powdery product of a double salt of orthophosphoric acid with melamine and urea; and(b) a step of calcining the powdery product obtained in step (a) at a temperature of from 240 to 340.degree. C. for from 0.1 to 30 hours, while preventing agglomeration, to obtain a melamine polymetaphosphate.
摘要:
A 1,3,5-triazine derivative salt of a polyacid comprising phosphorus, sulfur and oxygen, which has a solubility of from 0.01 to 0.10 g/100 ml in water (25.degree. C.) and a pH of from 2.0 to 7.0 as a 10 wt % aqueous slurry (25.degree. C.), and which is obtained from the following steps (a) and (b):(a) a step of obtaining a reaction product by mixing melamine, phosphoric acid and sulfuric acid at a temperature of from 0 to 330.degree. C. in such ratios that the melamine is from 1.0 to 4.0 mols per mol of the total molar amount of the phosphoric acid (as calculated as orthophosphoric acid content) and the sulfuric acid (as sulfuric acid content), and the sulfuric acid (as sulfuric acid content) is from 0.05 to 20 mols per mol of the phosphoric acid (as calculated as orthophosphoric acid content), and(b) a step of baking the reaction product obtained in step (a) at a temperature of from 340 to 400.degree. C. for from 0.1 to 30 hours; and a process for its production.
摘要:
A melamine.melam.melem salt of a polyphosphoric acid, which has a solubility of from 0.01 to 0.10 g/100 ml in water (25.degree. C.), a pH of from 4.0 to 7.0 as a 10 wt % aqueous slurry (25.degree. C.), and a melamine content of from 0.05 to 1.00 mol, a melam content of from 0.30 to 0.60 mol and a melem content of from 0.05 to 0.80 mol, per mol of the phosphorous atom; andA process for producing the above mentioned melamine.melam.melem salt of a polyphosphoric acid, which comprises the following steps (a) and (b):(a) a step of obtaining a reaction product by mixing melamine and phosphoric acid at a temperature of from 0 to 330.degree. C. in such a ratio that the melamine is from 2.0 to 4.0 mols per mol of the phosphoric acid (as calculated as orthophosphoric acid content), and(b) a step of baking the reaction product obtained in step (a) at a temperature of from 340 to 450.degree. C. for from 0.1 to 30 hours.
摘要:
An apparatus for laminating plates having guide holes for aligning each plate to a predetermined position. A horizontal base is provided for stacking the plates thereon. A conveyor device conveys the plates to a predetermined position over the horizontal base one by one, the conveyor device dropping the plates on the horizontal base from the predetermined position so as to laminate the plates to each other. A guide device including guide pins which are disposed perpendicular to the conveyed plate at the predetermined position above the conveying device, the guide pins moving together with the falling plate to engage in the guide holes, respectively, to align each of the plates along the guide pins while laminating the plate on the horizontal base, and to return the guide pins to the initial position thereof.