摘要:
A viscoelastic foam is produced by reacting (a) an isocyanate component that includes at least 25% by weight of diphenylmethane diisocyanate having a monomeric content of from 50 to 90% by weight, (b) an isocyanate-reactive component, (c) at least one catalyst, (d) at least one surface active agent, and (e) liquid carbon dioxide. These foams are characterized by a ball rebound of less than 20%. Particularly preferred foams are characterized by a 95% height recovery time greater than 4 seconds.
摘要:
The invention relates to a polyether polyol composition for the preparation of polyurethane foams, comprising: (a) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 65 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 40 to 80%, based on the total number of primary and secondary hydroxyl groups, having a PO content of from 45 to 55% by weight and an EO content of from 40 to 55% by weight; (b) a dispersion of a polymer in a polyether polyol, wherein the OH number of the dispersion is within a range of from 10 to 30 mg of KOH/g and the polyether polyol has a hydroxyl functionality of 3, a proportion of primary hydroxyl groups within a range of from 70 to 90%, based on the total number of primary and secondary hydroxyl groups, a PO content of from 70 to 90% by weight and an EO content of from 10 to 30% by weight; (c) a polyether polyol having a hydroxyl functionality of 3, an OH number within a range of from 220 to 290 mg of KOH/g and a proportion of primary hydroxyl groups within a range of at least 90%, based on the total number of primary and secondary hydroxyl groups, having a PO content of up to 2% by weight and an EO content of at least 75% by weight; (d) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 70 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 0 to 3%, based on the total number of primary and secondary hydroxyl groups, having a PO content of at least 95% by weight and an EO content of up to 3% by weight.
摘要:
The present invention concerns a floor covering, such as a carpet, containing a first textile planar element and a first layer which is at least partially connected to the first textile planar element over their surfaces, wherein the first layer contains viscoelastic polymer foam. The floor covering according to the invention is characterized in that the first textile planar element has a modulus of elasticity of ≧0.5 N/mm2 to ≦2.5 N/mm2, that in the first layer 1 the viscoelastic polymer foam has a compression load deflection at 40% compression of ≧1 kPa to ≦10 kPa and that in the first layer the viscoelastic polymer foam has a hysteresis when determining the compression load deflection at 40% compression of ≧20% to ≦70%. The present invention also relates to a method of manufacturing a floor covering.
摘要翻译:本发明涉及包含第一织物平面元件的地板覆盖物,例如地毯,以及在其表面上至少部分地连接到第一织物平面元件的第一层,其中第一层包含粘弹性聚合物泡沫。 根据本发明的地板覆盖物的特征在于,第一织物平面元件具有> = 0.5N / mm 2至<= 2.5N / mm 2的弹性模量,在第一层1中,粘弹性聚合物泡沫具有压缩载荷 在> = 1kPa的40%压缩下的挠曲为<= 10kPa,而在第一层中,当确定40%压缩时的压缩载荷挠度> 20%至<70%时,粘弹性聚合物泡沫具有滞后。 本发明还涉及一种制造地板覆盖物的方法。
摘要:
The invention relates to a highly flexible sheet composite material comprising a block flexible foam and a layer of whipped foam made of polyurethane-based dispersions two-dimensionally bonded thereto, a process for preparing such a composite material, and the use thereof.
摘要:
The subject-matter of the present invention relates to a process for the production of flame-retardant polyurethane foams, preferably for the production of flame-retardant flexible polyurethane foams, from A1 a filler-containing polyether polyol (component A1.1), wherein the filler is a reaction product of a di- or poly-isocyanate with a compound containing isocyanate-reactive hydrogen atoms, and optionally further compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 400 to 18,000 (component A1.2), A2 optionally compounds containing isocyanate-reactive hydrogen atoms and having a molecular weight of from 62 to 399, A3 water and/or physical foaming agents, A4 red phosphorus, A5 optionally auxiliary substances and additives such as a) catalysts, b) surface-active additives, c) one or more additives selected from the group consisting of reaction retardants, cell regulators, pigments, colourings, flame retardants other than component A4, stabilisers against the effects of ageing and weathering, plasticisers, substances having fungistatic and bacteriostatic action, fillers and release agents, and B di- or poly-isocyanates,wherein no ammonium polyphosphate is used, wherein the resulting polyurethane foams exhibit excellent ageing properties as well as a high level of flame-retardant properties.
摘要:
The present invention is directed to a process for the manufacture of three-dimensional acoustically sound automotive insulation parts. In particular, the process includes mixing a two component polyurethane resin, applying the resin to a substrate, molding the substrate and then trimming and demolding the resin applied substrate.
摘要:
The present invention relates to polyether polyol compositions containing renewable raw materials, a process for preparing visco-elastic polyurethane foams using such compositions, correspondingly prepared visco-elastic foam materials, and the use thereof.
摘要:
The invention relates to a highly flexible sheet composite material comprising a block flexible foam and a layer of whipped foam made of polyurethane-based dispersions two-dimensionally bonded thereto, a process for preparing such a composite material, and the use thereof.
摘要:
Flexible polyurethane foams that satisfy the requirements of FMVSS 302 are produced by reacting a polyisocyanate with a polyol component that includes: (1) from 90 to 99 parts by weight of a polyether polyol having an OH value of from 20 to 200 mg KOH/g and functionality of from 2 to 4 and (2) from 1 to 10 parts by weight of a polyether ester polyol having an OH value of from 150 to 450 mg KOH/g and a functionality of from 2 to 3 in the presence of a blowing agent, catalyst and stabilizer. The foams thus produced are useful as cushioning for furniture and automotive applications.
摘要:
The invention relates to a polyether polyol composition for the preparation of polyurethane foams, comprising: (a) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 65 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 40 to 80%, based on the total number of primary and secondary hydroxyl groups, having a PO content of from 45 to 55% by weight and an EO content of from 40 to 55% by weight; (b) a dispersion of a polymer in a polyether polyol, wherein the OH number of the dispersion is within a range of from 10 to 30 mg of KOH/g and the polyether polyol has a hydroxyl functionality of 3, a proportion of primary hydroxyl groups within a range of from 70 to 90%, based on the total number of primary and secondary hydroxyl groups, a PO content of from 70 to 90% by weight and an EO content of from 10 to 30% by weight; (c) a polyether polyol having a hydroxyl functionality of 3, an OH number within a range of from 220 to 290 mg of KOH/g and a proportion of primary hydroxyl groups within a range of at least 90%, based on the total number of primary and secondary hydroxyl groups, having a PO content of up to 2% by weight and an EO content of at least 75% by weight; (d) a polyether polyol having a hydroxyl functionality of 2, an OH number within a range of from 50 to 70 mg of KOH/g and a proportion of primary hydroxyl groups within a range of from 0 to 3%, based on the total number of primary and secondary hydroxyl groups, having a PO content of at least 95% by weight and an EO content of up to 3% by weight.