摘要:
Aqueous dispersions containing a polyurethane built up from a) diisocyanates having 4 to 30 carbon atoms, b) diols, of which b.1) from 10 to 100 mol %, based on the total amount of the diols (b), have a molecular weight of from 500 to 5000 and are built up from b1.1) (C.sub.4 - to C.sub.30 -alkyl)succinic acid and/or (C.sub.4 - to C.sub.30 -alkenyl)succinic acid, b1.2) from 0 to 60 mol %, based on component (b1.1), of a dicarboxylic acid which is different from component (b1.1), and b1.3) a diol having a molecular weight of from 60 to 500 g/mol, b.2) from 0 to 90 mol %, based on the total amount of the diols (b), have a molecular weight of from 60 to 500 g/mol, and b.3) from 0 to 90 mol %, based on the total amount of the diols (b), have a molecular weight of from 500 to 5000 g/mol and are different from (b1), c) monomers which are different from the monomers (a) and (b) and contain at least 2 isocyanate groups or at least 2 isocyanate-reactive groups and which in addition carry at least one hydrophilic group or a potentially hydrophilic group, thus achieving the water-dispersibility of polyurethanes, d) if desired, further polyfunctional compounds which are different from the monomers (a) to (c) and contain reactive groups which are alcoholic hydroxyl groups, primary or secondary amino groups or isocyanate groups, and e) if desired, monofunctional compounds which are different from the monomers (a) to (c) and contain one reactive group, which is an alcoholic hydroxyl group, a primary or secondary amino group or an isocyanate group.
摘要:
A process for treating a substrate comprises utilizing at least one aqueous formulation comprising (A) at least one binder obtainable by copolymerization of ethylene and (meth)acrylic acid and optionally one or more further comonomers, (B) at least one reaction product of at least one carbodiimide (C) with at least one diol, triol or polyol (D), or (C) at least one carbodiimide and optionally at least one diol, triol or polyol.
摘要:
A process for treating a substrate comprises utilizing at least one aqueous formulation comprising (A) at least one acrylate-based binder without interpolymerization of any comonomer capable of detaching, per mole, one equivalent of formaldehyde on exposure to a temperature in the range from 100 to 250° C., (B) at least one carbodiimide, (C) at least one diol, triol or polyol.
摘要:
A roller bearing (e.g., a cross taper roller bearing) includes an outer ring, an inner ring and rolling elements (e.g., taper rollers) located between the inner and outer rings. The rolling elements are kept at a distance by a cage formed from a number of individual cage segments. Each cage segment has two opposing guide sections for one of the rolling elements to at least partially encompass the rolling element on both sides. In addition, for the rolling elements bordering the one rolling element, the cage segment has guide sections which, in interaction with a corresponding guide section of an adjacent cage segment, at least partially encompass the bordering rolling elements.
摘要:
A process for treating a polypropylene textile comprises treating the polypropylene textile with an emulsifier-free aqueous formulation comprising (a) at least one silicone compound having at least one hydrophilic group or (b) at least one ethylene copolymer obtainable by copolymerization of ethylene with at least one ethylenically unsaturated mono- or dicarboxylic acid or anhydride.
摘要:
A roller bearing (e.g., a cross taper roller bearing) includes an outer ring, an inner ring and rolling elements (e.g., taper rollers) located between the inner and outer rings. The rolling elements are kept at a distance by a cage formed from a number of individual cage segments. Each cage segment has two opposing guide sections for one of the rolling elements to at least partially encompass the rolling element on both sides. In addition, for the rolling elements bordering the one rolling element, the cage segment has guide sections which, in interaction with a corresponding guide section of an adjacent cage segment, at least partially encompass the bordering rolling elements.
摘要:
The process for finishing textile materials by treatment with at least one aqueous liquor which comprises at least one organic polymer and at least one organic or inorganic solid in particulate form, wherein the organic or inorganic solid or solids are present in the liquor in a fraction of at least 5.5 g/l.
摘要:
Bridged, methylolated bis-4,5-dihydroxyimidazolidin-2-ones conforming to the formula 1 ##STR1## where X=(CH.sub.2).sub.n where n=2, 3, 4, 5, 7, 8, 9 or 10, branched or cyclic alkyl, each with or without hetero atoms such as O,S, N, P in the alkyl chain,CH.sub.2 CH.sub.2 (--OCH.sub.2 CH.sub.2).sub.m,CH.sub.2 CH.sub.2 CH.sub.2 (--OCH.sub.2 CH.sub.2 CH.sub.2).sub.m,CH.sub.2 CH.sub.2 CH.sub.2 (--OCH.sub.2 CH.sub.2).sub.m OCH.sub.2 CH.sub.2 CH.sub.2),CH.sub.2 CH.sub.2 (--OCH.sub.2 CH.sub.2 CH.sub.2).sub.m OCH.sub.2 CH.sub.2,CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 (--OCH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2).sub.m,CH.sub.2 C(CH.sub.3)H(--OCH.sub.2 C(CH.sub.3)H).sub.m orCH.sub.2 CH.sub.2 CH.sub.2 (--OCH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2).sub.m OCH.sub.2 CH.sub.2 CH.sub.2,where m=0-7,andR.sup.1,R.sup.2 =H and/or CH.sub.2 OH, are prepared in one or two stages, the one-stage process also providing those where X=(CH.sub.2).sub.6, and are useful in textile finishing.
摘要:
The present invention relates to expandable polystyrene beads containing blowing agent which are coated with from 0.01 to 0.5% by weight of a hydrophobicizing agent which melts above 25.degree. C. and has a mean particle size of less than 100 .mu.m. The beads can be converted into foam moldings having reduced water absorption capacity.