Abstract: A process for preparing polymers containing polyortho ester groups and optionally NCO groups by reacting A) and B) where A) is a polyortho ester containing at least one isocyanate-reactive group prepared by reacting at least one or more acyclic ortho esters with low molecular weight polyols having a functionality of 4-8 and a number-average molecular weight of 80-500 g/mol and B) is least one polyisocyanate. The polymers obtained from the process can be used to produce coatings, adhesive bonds and/or seals. The coating compositions can include one or more of the above-described polymers, optionally polyisocyanates, catalysts, and optionally auxiliaries and additives and can be used to coat substrates.

Abstract: The present invention relates to light fast, aqueous, strippable coating compositions containing A) 40 to 90 wt. %, based on resin solids of A) and B), of aqueous polyurethane-polyureas and B) 10 to 60 wt. %, based on resin solids of A) and B), of polymers prepared from radically polymerizable monomers, wherein the percentages of A) and B) add up to 100, based on the weight of resin solids of A) and B). The present invention relates also to substrates coated with these strippable coating compositions. In addition, the present invention relates to the use of the stripped coatings as recycled material by mechanically comminuting the stripped coatings, optionally after cleaning, and then either pressing them in heatable presses to form sheets, or extruding them in an extruder to form endless thermoplastic threads, and then processing the resulting threads by known granulating methods to form cylindrical, spherical, lenticular or rhombic granules.

Abstract: A thermoplastic molding composition that contains a light-resistant aliphatic thermoplastic polyurethane elastomer is disclosed. The composition which largely contains of thermoplastic polyurethanes with high molecular weights and small amounts of thermoplastic polyurethanes with low molecular weights is useful for the preparation of a variety of articles and for use as sinterable composition in powder form.

Abstract: A water-soluble, biodegradable hydroxyalkyl cellulose-2-hydroxycarboxylic acid ester is disclosed. The hydroxyalkyl cellulose-2-hydroxycarboxylic acid ester has: (i) a molecular degree of substitution of the hydroxyalkyl group of less than 1.5 (MShydroxyalkyl<1.5); and (ii) a molecular degree of substitution of the 2-hydroxycarboxylic acid group of greater than 0.4 and less than 3 (0.4<MS2-hydroxycarboxylic acid<3). Also described is a method of preparing the hydroxyalkyl cellulose-2-hydroxycarboxylic acid ester, and methods of using it, e.g., as a consistency regulator in at least one of foodstuffs, cosmetics, building materials, paints and strippers.

Abstract: The present invention relates to coating compositions comprising a mixture of at least two aqueous, anionic polyurethane polyurea dispersions A and B, wherein dispersion A as a dry film has a TG in the range from −30° C., to −45° and dispersion B as a dry film has a first TG in the range from −30° C. to −45° C. and a second TG in the range from +45° C. to +60° C., and the mixture of A and B as a dry film has only one TG in the range from −30° C. to −45° C.

Abstract: The present invention relates to a process for the preparation of novel, partially crystalline polyether polyols with a functionality of ≧2, an average molecular weight Mn of 500 to 100,000 and a molar proportion of isotactic triads determining the crystallinity of >28%. The new polyether polyols are prepared by polymerizing alkylene oxides in the presence of a bimetallic :-oxoalkoxide modified with hydroxyl compounds.

Abstract: The present invention relates to a substrate with at least one section having a surface decoration and a coating between the surface and the decoration. The coating can be peeled from the surface, and is prepared from an aqueous anionic polyurethane-polyurea dispersion which are free from co-solvents.

Abstract: A process for the production of thermoplastic polyurethane elastomer is disclosed. The process entails (a) introducing and homogeneously mixing in a first static mixer (A) an isocyanate and (B) a mixture of compounds having an average of 1.8 to 3.0 Zerewitinoff active hydrogen atoms having a molecular weight of 400 to 10000 with and chain extenders having an average of 1.8 to 3.0 Zerewitinoff active hydrogen atoms and a molecular weight of 62 to 400 and optional auxiliaries to form a substantially unreacted mixture and (b) reacting said substantially unreacted mixture in a second static mixer to form thermoplastic polyurethane elastomer. The elastomer thus produced has improved mechanical properties and is suitable for the production of moldings.

Abstract: The present invention relates to evenly substituted polysaccharide derivatives having the general structure: polysaccharide—O—R wherein polysaccharide—O represents a substituted or unsubstituted polysaccharide unit and R is a substituent of a polysaccharide-OH group having either the structure R=—A—B— or the structure R=—B—, wherein A is a linear polyether chain having the following structure: A=(—D—O—)n wherein D denotes a linear aliphatic branched or unbranched chain having 2 to 12 C atoms, O represents an oxygen atom and n is a number equal to or greater than 1, and B represents a substituted carbamic acid having the structure wherein E denotes a linear or branched aliphatic chain having 1 to 18 C atoms.

Abstract: The present invention relates to novel thermoplastic materials based on polysaccharide ethers which are simultaneously substituted by carboxylic acid ester groups and carbamate groups, together with mixtures of such derivatives with low molecular weight aliphatic urea derivatives.

Abstract: The present invention relates to a process for preparing leather by (I) tanning a pelt with (a) an aldehyde, or (b) a bisulphite-blocked polyisocyanate; (II) optionally, retanning the pelt with (a) a polyaspartic acid, a salt of a polyaspartic acid, a polyaspartic acid anhydride, or a mixture thereof, and/or (b) a polyaspartamide; (III) dressing the resultant product by (a) bottoming the product with a polyurethane and one or more natural bottoming assistants, and (b) applying a polyurethane and/or polyesteramide finish; and (IV) optionally, aftertreating the resultant dressed leather with a leather preservative.

Abstract: The present invention relates to compounds selected from formula I wherein R1, R2, R3 and R4 are the same or different and represent hydrogen, C1, to C6-alkyl, C5 to C6-cycloalkyl, phenyl and halogen, m and n are the same or different and represent the 2, 3, 4 or 5, X, A and B represent carbon and Y1, Y2, Z1 and Z2 are the same or different and represent hydrogen, hydroxyl (OH), amino (NH2), isocyanato (NCO) or 4-hydroxyphenyl.

Abstract: The present invention relates to new shaped articles which comprise active compounds and are based on thermoplastically processable, biologically degradable polymers, preferably polyesters, polyester amides, polyester urethanes and polyester urethane ureas, and their production and use for combating parasites on, around and in the environment of host animals, the shaped articles optionally serving, after use, for combating phytopathogenic insects on open-air or indoor plants.

Abstract: The invention concerns novel plant-treatment agents comprising: at least one thermoplastically processable biodegradable polyester amide, optionally in a mixture with one or a plurality of further thermoplastically processable, biodegradable polymer components; at least one agrochemical substance; and optionally additives. The invention further concerns a process for preparing these agents, and their use in the application of agrochemical substances.