Abstract:
Mixtures of(I)polymers of monoethylenically unsaturated dicarboxylic acids having a molecular weight of from 200 to 5,000 and(II)(1) copolymers having a molecular weight of from 10,000 to 150,000 and comprising(a) from 10 to 70% by weight of monoethylenically unsaturated C.sub.4 -C.sub.8 -dicarboxylic acids or the salts thereof and(b) from 30 to 90% by weight of monoethylenically unsaturated C.sub.3 -C.sub.10 -monocarboxylic acids and/or the salts thereof,(2) graft polymers having a molecular weight of from 5,000 to 150,000, which are obtainable by free radical graft polymerization of(A) monoethylenically unsaturated C.sub.3 -C.sub.10 -carboxylic acids or the anhydrides and/or the salts thereof in the presence of(B) mono-, oligo- or polysaccharides and the derivatives thereof in a weight ratio (A) : (B) of (95 to 20) : (5 to 80), and/or(3) polyaminocarboxylic acids and/or polymers containing aminocarboxylic acid groupscontain the components (I) and (II) in a weight ratio of from 10 : 0.5 to 0.5 : 10 and are used as additives for phosphate-free or low-phosphate textile detergents or as dispersants or coating inhibitors in cleaners for hard surfaces.
Abstract:
Antitumor peptides of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the meanings stated in the description, and the preparation thereof.
Abstract:
Condensation products that contain N,O-acetal or carboxamide structures and are useful as detergent and cleaner additives are obtainable by condensation of(a) compounds that contain at least one unit of the structural elements ##STR1## where X is OH or NHR and R is C.sub.1 -C.sub.6 -alkyl or --CH.sub.2 --COOH, with(b) aldehydes, ketones or aldehyde- or keto-carboxylic acids to form acetal-lactones, and subsequent cleavage of the acetal-lactones with(c) aminocarboxylic acids, primary or secondary amines and/or polyethyleneimines.
Abstract:
Phosphate-free and low-phosphate detergents which contain surfactants as essential constituents also contain from 0.1 to 20% by weight, based on the particular formulation, of water-soluble or water-dispersible grafted proteins obtainable by free radical copolymerization of(A) monoethylenically unsaturated monomers in the presence of(B) proteins in a weight ratio of (A):(B) of (0.5-90):(99.5-10).
Abstract:
The continuous or quasi-continuous process for lightening organic polyisocyanates with ozone-containing gas, the treatment of the organic polyisocyanate being effected with an ozone-containing gas which furthermore comprises at least one further inert and/or reactive gas can be carried out, according to the invention, in a stirred tank with connected storage tank, in a sieve tray column or in a packed column.
Abstract:
The present invention relates to a novel process for preparing colorless, isocyanurate group-comprising polyisocyanates of (cyclo)aliphatic diisocyanates.
Abstract:
In a process for the production of leather, pelts, pickled pelts or semifinished products are treated with at least one polymer which is obtainable by copolymerization of at least one ethylenically unsaturated dicarboxylic anhydride (A), derived from at least one dicarboxylic acid of 4 to 8 carbon atoms, at least one vinylaromatic compound (B) and optionally at least one ethylenically unsaturated monomer (C) which differs from (A) and has a hetero atom, reaction with at least one compound (D) of the formula Ia or Ib at least 0.55 equivalent, based on (A), of (D) being used, and optionally hydrolysis with water or aqueous alkaline solution, where, in formulae Ia and Ib, the variables are defined as follows: A1 are identical or different and are C2-C6-alkylene R1 is linear or branched C1-C20-alkyl, and n is an integer from 6 to 200.
Abstract:
A system for linking initiators and beneficiaries, and a method suited therefor, are provided in which a linking unit is provided, which provides an agreement concluded between the initiator and the beneficiary, whereby the agreement is concluded earmarked for a certain product. A first mediation unit for an interested party is provided, which party will provide the product to the beneficiary after the performance of the agreement, in order to be able to use existing financial means in a target-oriented fashion.
Abstract:
A process for the preparation of water-soluble polymers of esters of ethylenically unsaturated carboxylic acids and polyalkylene glycols by azeotropic esterification, in the presence of organic solvents which form an azeotrope with water, of ethylenically unsaturated carboxylic acids with polyalkylene oxides which are capped at one end by end groups, to a degree of at least 85 wt %, followed by free-radical polymerization of the resulting esters optionally together with other ethylenically unsaturated monomers, in aqueous medium, wherein the organic solvents are removed by azeotropic distillation from the reaction mixture during polymerization and the water that is removed by distillation is recycled or the quantity of water removed by distillation from the reaction mixture is replaced by a feed of fresh water.
Abstract:
Water-soluble polymers of esters made from acrylic acid and alkylpolyalkylene glycols, obtainable by azeotropic esterification of a mixture of acrylic acid and alkylpolyalkylene glycol in a molar ratio of from 2 to 3:1 in the presence of at least 85% by weight, based on the alkylpolyalkylene glycol, of an organic solvent which forms an azeotrope with water, followed by free-radical polymerization, in an aqueous medium, of the mixture obtained during the esterification, where the organic solvent is distilled off azeotropically from the reaction mixture during the polymerization, and the water removed by distillation is returned to the mixture or replaced by a feed of fresh water, and preparation and use of these polymers as an additive to cementitious systems.