Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing an aqueous solution of a copolymer, wherein the time of occupation of a reactor for producing an aqueous solution of a copolymer can be shortened by avoiding or reducing foaming. SOLUTION: In producing an aqueous solution of a copolymer comprising (a) 50-99.5 mass% of at least one ethylenically unsaturated monocarboxylic acid and/or dicarboxylic acid (monomer A), (b) 0.5-50 mass% of at least one ethylenically unsaturated compound (monomer B) selected from an ester of an amine having at least one hydroxy group with an ethylenically unsaturated monocarboxylic acid, and a monoester and diester of the amine with an ethylenically unsaturated dicarboxylic acid, and (c) up to 20 mass% of at least one other monomer (monomer C), the monomers A, B and C are polymerized in an aqueous medium in the presence of at least one foam inhibitor. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a formaldehyde-free powdered binder composition. SOLUTION: The formaldehyde-free powdered binder composition comprises (a) a powdered copolymer prepared by polymerizing maleic anhydride, at least one α-olefin, and on demand, styrene, and (b) at least one powdered crosslinking agent, and (c) on demand, another additive. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
The invention relates to the use of formaldehyde-free aqueous binders with broad molecular weight distribution for substrates, comprising (A) 0 to 100 wt. % of an ethylenically-unsaturated acid anhydride, or an ethylenically-unsaturated carboxylic acid the carboxylic acid group of which can form an anhydride or mixtures thereof, (B) 100 to 0 wt. % of an ethylenically-unsaturated compound, (C) at least one polyfunctional curing agent or mixtures thereof and (D) 1 - 80 wt. % of an aqueous polymer dispersion, whereby the polymers from A) and B), obtained by radical polymerisation, on classification in a coordinate system of mean molecular weights Mw and polydispersity values, lie on the surface above a straight line, defined by the linear equation y = 1,25x + 20,000 and displaced in the y-direction by at least + 3,000, whereby the x-axis is the weight average molecular weight and the y axis is the polydispersity value multiplied by 10,000. The invention further relates to the binder itself and the use thereof for example, for moulded bodies, mats or sheets, in particular, for fibrous and particulate substrates such as fibre fleece, glass fibres, rockwool, reprocessed cotton, natural fibres or artificial fibres.
Abstract:
The invention relates to thermally polymerisable mixtures consisting of multifunctional macromonomers containing at least one radically polymerisable group. The invention also relates to polymerisation initiators and the use of said mixtures as binding agents for substrates, especially as binding agents for glass fibres, rock wool, synthetic fibres and for core sand binding.
Abstract:
The invention relates to the use of an aqueous binding agent devoid of formaldehyde for substrates, having a large molecular weight distribution. Said binding agent contains (A) 0 - 100 wt. % of an ethylenically unsaturated acid anhydride or an ethylenically unsaturated dicarboxylic acid, whereby the carboxylic acid groups thereof can form an anhydride group, or mixtures thereof, (B) 100 - 0 wt.- % of an ethylenically unsaturated compound, (C) at least one polyfunctional cross-linking agent or mixtures thereof. The polymers made from A) and B), obtained by radical polymerisation, classified in a coodination system according to the average molecular weight thereof Mw and the polydispersity value thereof, are arranged on a surface above a straight line which is defined by the straight equation y = 1.25x + 20000 and is displaced in direction y in a parallel manner by at least + 3000. The x axis characterises the average weight of the molecule and the y axis characterises the polydispersity multiplied by 10000.
Abstract:
Mixture (A) comprises pieces of open-cell aminoplastic foam material with an average diameter of 50 mu m to 5 mm (average weight), water, at least one surfactant and optionally an oil phase or a fat phase. Independent claims are included for: (1) a method for cleaning surfaces comprising using (A) as the cleaning agent and (2) the preparation of (A).
Abstract:
The use of polyacrylic acid (I) with an average mol. wt. (M w) of 5000-30000 and with end groups containing sulfur and at least 2 carbon atoms, which is at least partly neutralised with alkali metal hydroxide or ammonia, as auxiliary material for the wet-milling of calcium carbonate. Independent claims are also included for finely-divided suspensions of CaCO 3 containing 0.1-2 wt% (I), obtained by wet-milling in presence of (I).
Abstract:
An ethylenically unsaturated monocarboxylic acid and/or dicarboxylic acid (monomer A) (in wt.%) (50-99.5), an ethylenically unsaturated compound chosen from specific esters (0.5-50) (monomer B), and an optional monomer (monomer C) (up to 20) are polymerized in aqueous medium in the presence of foam inhibitor(s), to prepare an aqueous copolymer solution. An ethylenically unsaturated monocarboxylic acid and/or dicarboxylic acid (monomer A) (in wt.%) (50-99.5), ethylenically unsaturated compound (0.5-50) (monomer B), and an optional monomer (monomer C) (up to 20), are polymerized in an aqueous medium in the presence of at least one foam inhibitor, to prepare an aqueous copolymer solution. The monomer (B) is chosen from esters of ethylenically unsaturated monocarboxylic acids and monoesters and diesters of ethylenically unsaturated dicarboxylic acids with an amine containing at least one hydroxyl group.
Abstract:
The invention relates to sulfonic acid group-containing copolymers, which al so contain the following constituents that are incorporated by polymerization i n a statistical or block-by-block manner: (a) 30 to 95 mol % of a least one monoethylenically unsaturated carboxylic acid, one monoethylenically unsaturated carboxylic acid ester, or one water-soluble salt of a monoethylenically unsaturated carboxylic acid; (b) 3 to 35 mol % of at least one sulfonic acid group-containing monomer of formula (I), in which the variables have the following meanings: R represents hydrogen or methyl; X represents a chemical bond or -C00-R1-; R1 represents unbranched or branched C1-C4 alkylene; M represents hydrogen, alkali metal or ammonium, and; (c) 2 to 35 mol % of at least one non-ionic monomer of formula (II), in which the variables have the following meanings: R2 represents hydrogen or methyl; R3 represents a chemical bond or unbranched or branched C1-C6 alkylene; R4 represents identical or different unbranched or branched C2-C4 alkylene groups; R5 represents unbranched or branched C1-C6 alkyl, C5-C8 cycloalkyl o r aryl, and; n represents 3 to 50. These copolymers are used as an additive in detergents and cleansers.
Abstract:
There is provided a method for producing granulated or powdery detergent compositions comprising adding into slurry a copolymer obtained by radical copolymerisation of (A) 50-99.5 mol % monoethylenically unsaturated monocarboxylic acid or the salt thereof, (B) 0.5-20.0 mol % monoethylenically unsaturated alkoxylated monomer of formula (I) (see formula I) in which the variables are defined as follows: R1 is hydrogen or methyl; R2 is -(CH2)x-O-, -CH2-NR5-, -CH2-O-CH2-CR6R7-CH2-O- or -CONH-; R3 is a C2-alkylene radical; R4 is hydrogen, -SO3M or -PO3M2; R5 is hydrogen or -CH2-CR1=CH2; R6 is -O-[R3-O]n-R4; R7 is hydrogen or ethyl; M is alkali metal or hydrogen; n is from 4 to 250; x is 0 or 1.