摘要:
The present invention relates to a process for preparing mortar/concrete compositions by incorporating into the mortar/concrete compositions either before or during the mixing operation a water-dispersible polyisocyanate whicha) has an average isocyanate functionality of 1.8 to 4.0,b) contains 4.0 to 25.0 wt. % of aliphatically and/or cycloaliphatically bound isocyanate groups (calculated as NCO; molecular weight=42) andc) contains 5 to 80 wt. % of ethylene oxide units present within polyether chains (calculated as C.sub.2 H.sub.4 O; molecular weight=44), in whichd) the polyether chains contain an average of 5 to 50 ethylene oxide units.
摘要翻译:本发明涉及一种通过在混合操作之前或期间将水分散性多异氰酸酯掺入到砂浆/混凝土组合物中来制备砂浆/混凝土组合物的方法,a)具有1.8至4.0的平均异氰酸酯官能度,b)包含4.0 至25.0重量% 脂肪和/或脂环结合的异氰酸酯基团的%(以NCO计算;分子量= 42),和c)含有5-80重量% 存在于聚醚链内的环氧乙烷单元的%(以C 2 H 4 O计算;分子量= 44),其中d)聚醚链含有平均5至50个环氧乙烷单元。
摘要:
Use of water-dispersible or water-soluble polyether-urethanes, which optionally contain isocyanate groups, as additives for inorganic binders in the preparation of a building material, particularly a high-density or high-strength mortar or concrete composition. The building material resulting from the use of the water-dispersible or water-soluble polyether-urethanes.
摘要:
The present application relates to compositions comprising at least one siloxane and at least one superplasticizer based on polycarboxylate ethers or sulphonates of lignin, melamine or naphthalene or of resins thereof, and to the use of such compositions as or in building-product mixtures or building products, especially mortar mixtures or concrete mixtures.
摘要:
Dispersing agents especially useful as cement plasticizers are copolymers obtained by polymerizing a) 5 to 70 percent by weight of ethylenically unsaturated monocarboxylic acids, carboxylic acid amides, dicarboxylic acids, or their anhydrides and/or (meth)acrylic acid monoesters of dialcohols, b) 1 to 40 percent ethylenically unsaturated, sulfonate-functional or sulfate-functional compounds, c) 10-80 percent of ethylenically unsaturated compounds of polyethylene glycols containing 1 to 300 ethylene oxide units, and terminal OH groups or —OR′ ether groups, d) 5 to 80 percent of ethylenically unsaturated compounds of polyalkylene glycol containing 1 to 300 C3-4 alkylene oxide units and terminal OH groups or —OR′ ether groups, the percentages totaling 100 percent by weight.
摘要:
The invention relates to the use of carboxylic acid-based polyoxyalkylenes as low-emissions shrinkage reducers in mineral binders, to methods of reducing shrinkage and to corresponding compositions.
摘要:
The invention provides for the use of coating compositions based on one or more mineral binders, one or more polymers, one or more fillers, and, if desired, one or more additives for producing roof coatings, the coating compositions comprising at least 50% by weight of polymers, based on the dry weight of the polymers and of the mineral binders.
摘要:
The present application relates to compositions comprising at least one siloxane and at least one superplasticizer based on polycarboxylate ethers or sulphonates of lignin, melamine or naphthalene or of resins thereof, and to the use of such compositions as or in building-product mixtures or building products, especially mortar mixtures or concrete mixtures. Preferably the siloxane is a branched siloxane containing at least one “T” unit and containing at least two different polyoxyalkylene moieties.
摘要:
The invention provides for the use of coating compositions based on one or more mineral binders, one or more polymers, one or more fillers, and, if desired, one or more additives for producing roof coatings, the coating compositions comprising at least 50% by weight of polymers, based on the dry weight of the polymers and of the mineral binders.
摘要:
Dispersing agents especially useful as cement plasticizers are copolymers obtained by polymerizing a) 5 to 70 percent by weight of ethylenically unsaturated monocarboxylic acids, carboxylic acid amides, dicarboxylic acids, or their anhydrides and/or (meth)acrylic acid monoesters of dialcohols, b) 1 to 40 percent ethylenically unsaturated, sulfonate-functional or sulfate-functional compounds, c) 10-80 percent of ethylenically unsaturated compounds of polyethylene glycols containing 1 to 300 ethylene oxide units, and terminal OH groups or —OR′ ether groups, d) 5 to 80 percent of ethylenically unsaturated compounds of polyalkylene glycol containing 1 to 300 C3-4 alkylene oxide units and terminal OH groups or —OR′ ether groups, the percentages totaling 100 percent by weight.