摘要:
The invention relates to a method for stabilizing and securing banks, hillsides and slopes, and structures present at least partly in moving waters, such as supporting and construction elements, by composite materials comprising mineral particles, preferably stones, in particular crushed rock, and an epoxy resin.
摘要:
The invention relates to a method for stabilizing and securing banks, hillsides and slopes, and structures present at least partly in moving waters, such as supporting and construction elements, by composite materials comprising mineral particles, preferably stones, in particular crushed rock, and an epoxy resin.
摘要:
The present invention relates to a process for the production of top layers for roads, tracks, and other areas used by traffic, by producing a mixture comprising mineral material and a polyurethane reaction mixture, and also, if appropriate, further additions, applying it to a substrate material, and compacting and hardening it by applying a pressure of at least 5 N/cm2, where operations are substantially carried out without use of solvents. The present invention further relates to top layers for roads, tracks, and other areas used by traffic, obtainable by such a process.
摘要翻译:本发明涉及通过生产包含矿物材料和聚氨酯反应混合物的混合物以及如果合适地进一步添加,将其施加到 通过施加至少5N / cm 2的压力来压实和硬化,其中操作基本上不使用溶剂进行。 本发明还涉及用于通过这种过程可获得的用于道路,轨道和其它交通使用的区域的顶层。
摘要:
The invention provides a method of treating mineral surfaces, comprising the steps ofa) treating the mineral surfaces to remove soiling and b) coating the surfaces with a plastic, which comprises using as the plastic in step b) a transparent, compact-hydrophobic polyurethane preparable by reacting i) polyisocyanates with ii) compounds having at least two hydrogen atoms that are reactive with isocyanate groups.
摘要:
The invention relates to an apparatus for coastal protection, comprising at least one porous composite of stones and plastics which is fixed at a point.
摘要:
The invention relates to a method for consolidating roadways, wherein at least one plastic is applied to the surface and/or in the interior of the roadway.
摘要:
The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R′, R1 and R1′ independently of one another represent branched or unbranched C1-C7 alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl or alkynyl; R2 represents unsubstituted, monoalkylated or polyalkylated and/or monofluorinated or polyfluorinated aromatic hydrocarbons from group (II); R3 and R4 independently of one another represent CH2, CF2 oder C(R1)2; m stands for 0, 1 or 2; n stands for 0, 1 or 2; o stands for 0 or 1, all independently of one another. Said systems exhibit improved characteristics in terms of activity and stereoselectivity in comparison to conventional co-catalysts such as AlEt3 and can act simultaneously as co-catalysts and stereoselectivity promoters
摘要:
Flexible polyurethane foam which can be obtained by mixing a) polyisocyanates with b) at least one relatively high molecular weight compound having at least two reactive hydrogen atoms, c) hyperbranched polyethers, d) if appropriate a low molecular weight chain extender and/or crosslinker, e) a catalyst, f) blowing agents and g) if appropriate other additives.
摘要:
The present invention relates to an open-cell polyurethane foam comprising polyester and polyether structures and having a density of 70 to 300 g/L, 1 to 20 cells/cm, a rebound intensity greater than 30%, an elongation at break of greater than 200%, a tear propagation resistance of greater than 1.2 N/mm and a tensile strength of greater than 200 kPa. The present invention further relates to a process for producing inventive open-cell polyurethane sponges and to the use thereof as a pipe cleaning sponge.