摘要:
Predominantly linearly extended polyalkylene polyamines are produced, in increased conversion rates, by reacting alkylenediamines with alkylene glycols or alkanolamines using a phosphorus amide catalyst in place of phosphorus acid or acid derivative catalysts.
摘要:
Disclosed herein is a process for preparing a shelf-stable, one-pack, silane modified (meth)acrylic latex interpolymer composition, wherein the process comprises continuously adding at least a portion of a mixture comprising at least 0.5 mole percent of a vinyl silane comprising hydrolyzable groups and up to 99.5 mole percent of a (meth)acrylic monomer to water and a surfactant in a reaction vessel, wherein said addition is carried out in the presence of a polymerization initiator and buffer sufficient to maintain the pH of the reaction at a level of at least 6 throughout the reaction, while simultaneously hydrolyzing from about 10 to about 60% of the hydrolyzable groups of the vinyl silane.
摘要:
Enhanced production of predominantly linearly extended polyalkylene polyamines from alkylenediamines reacted with alkylene glycols or alkanolamines using a phosphorus-containing catalyst is achieved by removing water during the reaction.
摘要:
A polysiloxane-polyoxyalkylene composition of the nominal formula: ##STR1## wherein R is an alkyl group having 1 to 3 carbon atoms and R.degree., R', R" and R'" are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and,the polyoxyalkylene of R' is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 3,000 to about 5,500;the polyoxyalkylene of R" is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 800 to about 2,900; andthe polyoxyalkylene of R'" is a polyoxypropylene polyether having an average molecular weight from about 130 to about 1200;R.degree. can be R', R" or R'", a and e are individually 0 or 1; b, c, and d are numbers such that b+c+d=y, x and y are positive numbers such that the sum of x+y ranges from 25 to 400 and x is greater than y; wherein the ratio (b+c):d ranges from 0.8 to 1.9.
摘要翻译:具有下式的聚硅氧烷 - 聚氧化烯组合物:其中R是具有1至3个碳原子的烷基,R DEG,R',R“和R”'分别是与硅原子连接的单价聚氧化烯聚醚 通过双功能联系; 并且R'的聚氧化烯是聚(氧乙烯 - 氧丙烯)醚,其含有20重量%至60重量%的氧化乙烯,其平均分子量为约3,000至约5,500; R“的聚氧化烯是聚(氧乙烯 - 氧丙烯)醚,其含有20重量%至60重量%的氧化乙烯,其平均分子量为约800至约2900; 并且R“'的聚氧化烯是平均分子量为约130至约1200的聚氧丙烯聚醚; R DEG可以是R',R“或R”',a和e分别为0或1; b,c和d是数字,使得b + c + d = y,x和y是正数,使得x + y的和范围为25至400,x大于y; 其中所述比率(b + c):d为0.8至1.9。
摘要:
A polysiloxane-polyoxyalkylene composition of the nominal formula: ##STR1## wherein R is an alkyl group having 1 to 3 carbon atoms and R.degree., R', R" and R'" are individually monovalent polyoxyalkylene polyethers attached to the silicon atom through a difunctional link; and,the polyoxyalkylene of R' is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 3,000 to about 5,500;the polyoxyalkylene of R" is a poly(oxyethylene-oxypropylene) ether which contains 20% to 60% oxyethylene by weight and has an average molecular weight of from about 800 to about 2,900; andthe polyoxyalkylene of R'" is a polyoxypropylene polyether having an average molecular weight from about 130 to about 1200;R.degree. can be R', R" or R'", a and e are individually 0 or 1; b, c, and d are numbers such that b+c+d=y, x and y are positive numbers such that the sum of x+y ranges from 25 to 400 and x is greater than y; wherein the ratio (b+c):d ranges from 0.8 to 1.9.
摘要翻译:其中R是具有1至3个碳原子的烷基,R',R',R“和R”'的聚硅氧烷 - 聚氧化烯组合物是单独的一价聚氧化烯聚醚 通过双键连接到硅原子上; 并且R'的聚氧化烯是聚(氧乙烯 - 氧丙烯)醚,其含有20重量%至60重量%的氧化乙烯,其平均分子量为约3,000至约5,500; R“的聚氧化烯是聚(氧乙烯 - 氧丙烯)醚,其含有20重量%至60重量%的氧化乙烯,其平均分子量为约800至约2900; 并且R“'的聚氧化烯是平均分子量为约130至约1200的聚氧丙烯聚醚; R DEG可以是R',R“或R”',a和e分别为0或1; b,c和d是数字,使得b + c + d = y,x和y是正数,使得x + y的和范围为25至400,x大于y; 其中所述比率(b + c):d为0.8至1.9。
摘要:
A process is provided for preparing predominantly linear polyalkylene polyamines which comprises reacting ammonia or an alkyleneamine compound having two primary amino groups or mixtures thereof with an alcohol or an alkanolamine compound having a primary amino group and a primary or secondary hydroxyl group or mixtures thereof in the presence of a derivative of carbonic acid at a temperature at which the reaction will proceed under pressures sufficient to maintain the reaction mixture substantially in a liquid phase.
摘要:
Process for the preparation of tetraalkylorthosilicates which comprises contacting alkanol and dimethylamine with copper-activated silicon, followed by adding alkanol to the resultant silane mixture.