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    • 62. 发明申请
    • METHOD FOR PREPARING 3-CARBOXY-4-HYDROXYBENZALDEHYDES AND DERIVATIVES THEREOF
    • 制备3-羧基-4-羟基苯甲醛及其衍生物的方法
    • WO1996037454A1
    • 1996-11-28
    • PCT/FR1996000779
    • 1996-05-24
    • RHONE-POULENC CHIMIEMETIVIER, Pascal
    • RHONE-POULENC CHIMIE
    • C07C65/30
    • C07C45/676C07C45/38C07C51/255C07C47/575C07C47/58C07C65/30
    • The object of the invention is a method for preparing 3-carboxy-4-hydroxybenzaldehydes and derivatives thereof from phenol compounds bearing formyl and/or hydroxymethyl groups in positions 2 and 4. Another object of the invention is the production of 4-hydroxybenzaldehydes from 3-carboxy-4-hydroxybenzaldehydes, and particularly the production of 3-methoxy-4-hydroxybenzaldehyde and 3-ethoxy-4-hydroxybenzaldehyde, known as "vanillin" and "ethyl vanillin" respectively. The method for preparing 3-carboxy-4-hydroxybenzaldehyde is characterised in that the group in position 2 of the phenol compound bearing formyl and/or hydroxymethyl groups in positions 2 and 4 is selectively oxidised to a carboxylic group, and optionally a hydroxymethyl group in position 4 to a formyl group. By thereafter decarboxylating the 3-carboxy-4-hydroxybenzaldehyde, a 4-hydroxybenzaldehyde is obtained.
    • 本发明的目的是从位置2和4的带有甲酰基和/或羟甲基的苯酚化合物制备3-羧基-4-羟基苯甲醛及其衍生物的方法。本发明的另一个目的是从3 - 羧基-4-羟基苯甲醛,特别是分别称为“香草醛”和“乙基香草醛”的3-甲氧基-4-羟基苯甲醛和3-乙氧基-4-羟基苯甲醛的制备。 3-羧基-4-羟基苯甲醛的制备方法的特征在于,将位置2和4中带有甲酰基和/或羟甲基的酚化合物的位置2中的基团选择性地氧化成羧基,并且任选地被氧化成羟基甲基 位置4到甲酰基。 然后使3-羧基-4-羟基苯甲醛脱羧,得到4-羟基苯甲醛。
    • 64. 发明申请
    • DETERGENT BUILDER COMPOSITION FOR REDUCING CALCIUM SCALING
    • 用于减少钙垢的洗涤剂组合物
    • WO1996029386A1
    • 1996-09-26
    • PCT/FR1996000396
    • 1996-03-15
    • RHONE-POULENC CHIMIE
    • RHONE-POULENC CHIMIEAVICE, MarylineBOITTIAUX, PatrickJOUBERT, Daniel
    • C11D07/12
    • C11D7/3245C11D3/06C11D3/08C11D3/10C11D3/33C11D7/12C11D7/14C11D7/16
    • A detergent builder composition including (A) at least 60 wt % of a mixture of at least one alkali metal carbonate and at least one alkali metal silicate nSiO2-M2O, where M is an alkali metal and the molar ratio SiO2/M2O is 1.5-3.5 while the weight ratio of the alkali metal silicate to the alkali metal carbonate is of 5:95-45:55; (B) 0.5-5 wt % of linear sodium polymetaphosphate of formula (NaPO3)m, where m is 10-30, optionally mixed with an organic phosphonate; and (C) optionally up to around 35 wt % of an N-carboxymethylated glutamic acid derivative or a water-soluble salt thereof, optionally mixed with a polymer or copolymer derived from an acrylic monomer, is disclosed. The use of said detergent builder composition in combination with at least one detergent in detergent compositions, as well as washing compositions with a low calcium scaling level, are also disclosed.
    • 一种洗涤剂助洗剂组合物,其包含(A)至少60重量%的至少一种碱金属碳酸盐和至少一种碱金属硅酸盐nSiO 2 -M 2 O的混合物,其中M是碱金属,并且SiO 2 / M 2 O的摩尔比为1.5- 3.5,而碱金属硅酸盐与碱金属碳酸盐的重量比为5:95-45:55; (B)0.5-5重量%的式(NaPO 3)m的线性聚偏磷酸钠,其中m为10-30,任选与有机膦酸酯混合; 和(C)任选地与衍生自丙烯酸类单体的聚合物或共聚物混合的N-羧甲基化谷氨酸衍生物或其水溶性盐的任意多至约35重量%。 还公开了所述洗涤剂助洗剂组合物与洗涤剂组合物中的至少一种洗涤剂的组合以及具有低钙结垢水平的洗涤组合物的用途。