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    • 44. 发明授权
    • Flame retardant thermosetting resin
    • 阻燃热固性树脂
    • US4027063A
    • 1977-05-31
    • US577087
    • 1975-05-13
    • Yoshio FujiwaraKeiichi NaitoYoshinobu FujimotoTooru OdashimaTomohiko Sada
    • Yoshio FujiwaraKeiichi NaitoYoshinobu FujimotoTooru OdashimaTomohiko Sada
    • C08F279/02C08F290/04C08F299/00H01B3/44B32B17/02C08F222/04C08L63/00G03C5/00
    • C08F290/048C08F279/02C08F299/00H01B3/441Y10S428/901Y10S428/92Y10T442/2475Y10T442/2713Y10T442/2721
    • A flame retardant thermosetting resin composition having improved properties as an electrical insulating material and being particularly suited for use in printed circuit boards composed essentially of acryloyloxy- or methacryloyloxy-terminated butadiene homopolymer or butadiene copolymer with, for example, acrylonitrile or styrene, ethylenically unsaturated monomer capable of copolymerizing with the terminating acryloyloxy- or methacryloyloxy- groups of the butadiene homopolymer or copolymer, which monomer has a substantial amount of haloaryl, and acid anhydride having at least one ethylenically unsaturated group. In preferred compositions of the invention, there are from 1.5 to 3.0 terminating acryloyloxy- or methacryloyloxy- groups per molecule of the butadiene homopolymer of copolymer, the amounts of ethylenically unsaturated monomer and of acid anhydride are from 150 to 500 weight percent and from 5 to 20 weight percent, respectively, based on the weight of terminated butadiene homopolymer or copolymer, and the amount by weight of halogen is 25 to 70 percent of the weight of the composition. A particularly desirable composition is obtained when the acryloyloxy- or methacryloyloxy-terminated polymer or copolymer is at least 70 weight percent 1,2-polybutadiene; chlorine and bromine are the halogens, bromine being preferred.
    • 一种具有改进的电绝缘材料性能的阻燃热固性树脂组合物,特别适用于基本上由丙烯酰氧基或甲基丙烯酰氧基封端的丁二烯均聚物或丁二烯共聚物组成的印刷电路板,例如丙烯腈或苯乙烯,烯属不饱和单体 能够与丁二烯均聚物或共聚物的末端丙烯酰氧基或甲基丙烯酰氧基共聚,该单体具有大量的卤代芳基,以及具有至少一个烯键式不饱和基团的酸酐。 在本发明的优选组合物中,每分子共聚物的丁二烯均聚物中有1.5至3.0个终止丙烯酰氧基或甲基丙烯酰氧基,烯键式不饱和单体和酸酐的量为150至500重量%和5至 基于终止的丁二烯均聚物或共聚物的重量分别为20重量%,卤素的重量占组合物重量的25-70%。 当丙烯酰氧基或甲基丙烯酰氧基封端的聚合物或共聚物为至少70重量%的1,2-聚丁二烯时,得到特别理想的组合物; 氯和溴是卤素,溴是优选的。
    • 46. 发明授权
    • Process for producing ascorbic acid-2-phosphoric ester salts
    • 生产抗坏血酸-2-磷酸酯盐的方法
    • US06344567B1
    • 2002-02-05
    • US09629169
    • 2000-07-31
    • Yoshio FujiwaraYuji KobayashiMakoto Saito
    • Yoshio FujiwaraYuji KobayashiMakoto Saito
    • C07F902
    • C07F9/65515
    • A process for producing an ascorbic acid-2-phosphoric ester salt, where an ascorbic acid-2-phosphoric ester salt solution reduced in the content of excess phosphoric acid or a salt thereof mingled in the solution can be obtained from a solution containing an ascorbic acid-2-phosphoric ester or a salt thereof and a phosphoric acid or a salt thereof, with industrially high efficiency. A process for producing an alkaline earth metal salt of an ascorbic acid-2-phosphoric ester, comprising adding an alkaline earth metal compound to a stock solution containing an ascorbic acid-2-phosphoric ester or a salt thereof and a phosphoric acid or a salt thereof, at a liquid temperature of 0 to 30° C. to adjust the pH to 8.5 to 10.5.
    • 一种生产抗坏血酸-2-磷酸酯盐的方法,其中抗坏血酸-2-磷酸酯盐溶液中减少过量磷酸的含量或其混合在溶液中的盐可由含抗坏血酸的溶液 酸-2-磷酸酯或其盐和磷酸或其盐,工业上的高效率。 一种生产抗坏血酸-2-磷酸酯的碱土金属盐的方法,包括向含有抗坏血酸-2-磷酸酯或其盐和磷酸或盐的储备溶液中加入碱土金属化合物 在0〜30℃的液温下调节pH至8.5〜10.5。