摘要:
Derivatives of carboxymethylcellulose are disclosed in which all or a portion of the carboxymethyl groups are replaced by groups of the general formula ##STR1## in which R.sup.1 is a hydrogen or methyl group,R.sup.2 is a divalent aliphatic hydrocarbon group with 2 to 5 carbon atoms,R.sup.3, R.sup.4 are alkyl groups with 1 to 4 carbon atoms,R.sup.5 is an alkyl group with 1 to 4 carbon atoms or a benzyl group,X is a halogen or sulfate group or a sulfonic acid group,with the proviso that, on the average, at least 0.1 quaternary ammonium groups are contained per anhydroglucose unit of the polymeric molecule.The invention furthermore relates to derivatives of carboxymethylcellulose, in which all or a portion of the carboxymethyl groups are replaced by groups of the general formula ##STR2## in which the substituents R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the above meaning, with the proviso that, on the average, at least 0.1 tertiary amino groups are contained per anhydroglucose unit of the polymeric molecule, as intermediates for the synthesis of the aforementioned derivatives.The invention furthermore is directed to a method for the synthesis of the derivatives of carboxymethylcellulose and their use in cosmetic preparations, especially for the care of hair.
摘要:
Process for the preparation of flexible polyurethane foams using polysiloxane-polyoxyalkylene block copolymers as stabilizers having the general formula: ##STR1## in which A represents A.sup.1 and A.sup.2 polyoxyalkylene blocks, as defined hereinafter, which are linked to silicon over carbon and which have the general formula --R.sup.2 --O--(C.sub.x H.sub.2x O--).sub.y R.sup.3, R.sup.2 being a divalent hydrocarbon radical with 2 to 4 carbon atoms and R.sup.3, x and y are as defined hereinafter,B is a methyl radical, the A or R.sup.1 radical,R.sup.1 is an alkyl radical with 1 to 12 carbon atoms, a substituted alkyl radical with 1 to 12 carbon atoms, an aryl or an alkaryl radical,n has a value of 30 to 200,m has a value of 3 to 20 when B is a methyl radical or corresponds to the R.sup.1 radical, and a value of 1 to 18 when B corresponds to the A radical,o has a value of 0 to 40, n being not less than 5 m, and m and o being not greater than 1/3 n,with the proviso that(a) the A.sup.1 blocks consist of 30 to 60 weight percent of oxyethylene units, the remainder being oxypropylene units, the R.sup.3 radical is a hydrogen radical and the average molecular weight of the A.sup.1 Blocks is from 2,500 to 4,500,(b) the A.sup.2 blocks consist of 30 to 80 weight percent of oxyethylene units, the remainder being oxypropylene units, the R.sup.3 radical is an alkyl radical with 1 to 4 carbon atoms or an acyl radical, and the average molecular weight of the A.sup.2 blocks is from 800 to 2,400, and(c) the molar ratio of the A.sup.1 blocks to the A.sup.2 blocks is 20:80 to 60:40, and there is at least one A.sup.1 and one A.sup.2 block in the average molecule.The stabilizers are distinguished by exceptionally high stabilizing properties and, when used in flexible polyurethane foams, surprisingly form open cells in spite of the fact that they contain OH-terminated polyoxyalkylene blocks.
摘要:
Organopolysiloxanes that have betaine groups and the following general formula ##STR1## in which R.sup.1 can represent the same or different groups in the molecule and may be an alkyl radical with 1 to 18 carbon atoms, an aryl radical or a polyoxyalkylene radical with the proviso that at least 70% of the R.sup.1 radicals are methyl radicals,R.sup.2 may be the same as R.sup.1, with the proviso that at least one R.sup.2 radical represents ##STR2## in which R.sup.3 is a divalent alkylene radical with 2 to 12 carbon atoms,R.sup.4 is a divalent alkylene radical with 2 to 6 carbon atoms,R.sup.5 and R.sup.6 are the same or different and represent an alkyl radical with 1 to 4 carbon atoms or a benzyl radical, andn=1, 2, or 3,x has a value of 0 to 200, andy has a value of 1 to 50, as well as processes for their synthesis and their use in cosmetic preparations, especially in hair care products.
摘要:
In a process of the preparation of flexible polyester urethane foams by reacting polyester polyols having at least two hydroxyl groups in the molecule with at least difunctional polyisocyanates in the presence of water, optionally of physical blowing agents, catalysts, stabilizers and optionally of other conventional additives, the following two components are added for catalysis in the form of a mixture to the reaction formulation in the amounts given (which are based on the polyester polyol):(a) 0.2 to 1.5 weight percent of N,N'-dimethylpiperazine,(b) 0.05 to 0.5 weight percent of a polysiloxane-polyoxyalkylene block copolymer of the general formula ##STR1## in which R.sup.1 is a polyoxyalkylene radical of the general formula--(CH.sub.2).sub.3 O(C.sub.m H.sub.2m O).sub.n R.sup.2 in whichR.sup.2 is an alkyl radical with 1 to 4 carbon atoms;m=2 or 3, the average value of m being 2 to 2.5:n=a whole number corresponding to a molecular weight for the R.sup.1 radical of 250 to 1600;a=is a whole number from 3 to 12; andb=is a whole number from 3 to 12.Flexible polyether urethane foams with a high degree of open-cell character are obtained, whose amine odor is clearly reduced.
摘要翻译:在制备柔性聚酯聚氨酯泡沫的过程中,通过在水存在下使分子中具有至少两个羟基的聚酯多元醇与任选的物理发泡剂,催化剂,稳定剂和任选的其它常规添加剂 加入下列两种成分,以混合物形式的反应制剂形式的催化作用(以聚酯多元醇为基础):(a)0.2-1.5%(重量)N,N'-二甲基哌嗪( b)0.05至0.5重量%的通式为“IMAGE”的聚硅氧烷 - 聚氧化烯嵌段共聚物,其中R 1是通式为 - (CH 2)3 O(C m H 2 m O)n R 2的聚氧化烯基,其中R 2为具有1个 至4个碳原子; m = 2或3,m的平均值为2至2.5:n =对应于R1基团的分子量为250至1600的整数; a =从3到12的整数; b =是3〜12的整数。获得具有高开放性能的柔性聚醚聚氨酯泡沫,其明显降低了胺气味。
摘要:
In a process for producing rigid polyurethane foams, polysiloxane-polyoxyalkylene block copolymers having the formula ##STR1## are used, in which A represents polyoxyalkylene blocks A.sup.1 or A.sup.2 having the formula --R.sup.2 --O--(C.sub.m H.sub.2m O).sub.y R.sup.1, which are linked to silicon by an SiC bond and in which R.sup.1 represents a hydrogen atom or an alkyl radical with 1 to 4 carbon atoms, R.sup.2 represents a bridging group, y is a whole number, and m has a value of 2.0 to 2.6, with the proviso that:a. the A.sup.1 blocks comprise 70 to 100 weight percent oxyethylene units, the remainder being oxypropylene units, and have a molecular weight from about 250 to 1,000,b. the A.sup.2 blocks comprise 35 to 65 weight percent oxyethylene units, the remainder being oxypropylene units, and have a molecular weight from about 600 to 1,500,c. the molar ratio of the A.sup.1 block to the A.sup.2 blocks is 85:15 to 15:85 and there is at least one block of A.sup.1 and block of A.sup.2 in the average molecule;B is a methyl radical or an A.sup.1 or A.sup.2 polyoxyalkylene block;a has a value of 15 to 150, andb has a value of 5 to 20, when B is a methyl radical, and a value of 3 to 18, when B represents A.sup.1 or A.sup.2.
摘要翻译:在制造刚性聚氨酯泡沫体的方法中,使用具有式(I)的聚硅氧烷 - 聚氧化烯嵌段共聚物,其中A表示具有式-R 2 -O-(C m H 2 m O)y R 1的聚氧化烯嵌段A 1或A 2,其与 硅,其中R1表示氢原子或具有1至4个碳原子的烷基,R2表示桥连基团,y表示整数,m表示2.0至2.6的值,条件是 : 一个。 所述A1嵌段包含70至100重量%的氧化乙烯单元,其余为氧化丙烯单元,分子量为约250至1,000,b。 A2嵌段包含35至65重量%的氧化乙烯单元,其余为氧化丙烯单元,分子量为约600至1500,c。 A1嵌段与A2嵌段的摩尔比为85:15〜15:85,在平均分子中存在至少一个A1嵌段和A2嵌段; B是甲基或A1或A2聚氧化烯嵌段; a的值为15〜150,当B为甲基时,b为5〜20,B为A1或A2时为3〜18。
摘要:
A method for easily degrading wastes consisting of the reaction products of organic materials containing isocyanate groups and specifically foamed polyurethane wastes by comminuting the waste and reacting it with alkylene oxide at 120.degree. C. to 200.degree. C. and removing the unreacted alkylene oxide. The products obtained are homogeneous liquids which can be added to polyols for reaction with isocyanates to form foamed polyurethanes.