Abstract:
PROBLEM TO BE SOLVED: To develop a flexible open cell foam useful for a liquid absorbing sanitary product, which can be manufactured by a simple process. SOLUTION: The fine pore flexible foam having an open cell is based on an olefin polymer or a thermoplastic polyester. The foam has an open cell content of 40%, preferably higher than 50%, a density of 300 g/L (liter), preferably in the range of 20-200 g/L, and an average cell diameter of less than 0.1 mm, preferably less than 0.08 mm.
Abstract:
PROBLEM TO BE SOLVED: To provide a water-absorbing foamy crosslinked polymer. SOLUTION: The process for producing the polymer comprises a first step (I) of foaming a polymerizable aqueous mixture of (a) a monoethylene unsaturated monomer having an acid radical in which at least its 50 mol% is neutralized, (b) optionally other monoethylene unsaturated monomer, (c) a crosslinking agent, (d) an initiator, (e) 0.1-20 wt.% of at least one kind of surfactant, (f) optionally at least one kind of solubilizer, and (g) optionally, a thickener, foam stabilizer, polymerization regulator, filler and/or foam nucleus-forming agent, and of dispersing fine foams of inactive gas into the radical to carry out foaming, and a second step (II) of forming a foamy hydrogel and optionally adjusting a water content of the foamy polymer to 1-60 wt.% to polymerize the foamed mixture. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
The invention concerns biologically degradable polyester amides P1 obtainable through reaction of a mixture consisting essentially of the following: (a1) a mixture consisting essentially of: 35-95 mol % adipic acid or ester-forming derivatives thereof or mixtures thereof, 5-65 mol % terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0-5 mol % a compound containing sulphonate groups (the sum of the individual molar percentages is 100); (a2) a mixture consisting essentially of: (a21) 99.5-0.5 mol % a dihydroxy compound chosen from the group comprising C2-C6 alkane diols and C5-C10 cycloalkane diols, (a22) 0.5-99.5 mol % an amino C2-C12 alkanol or an amino-C5-C10 cycloalkanol, (a23) 0-50 mol % a diamino C1-C8 alkane; and (a24) 0-50 mol % a 2,2`-bisoxazoline of general formula (I), in which R is a single bond, a (CH2)q-alkylene group in which q = 2, 3 or 4, or a phenylene group (the sum of the individual molar percentages is 100 and the molar ratio of a1 to a2 is in the range 0.4:1 - 1.5:1). The polyester amides P1 will have a molecular weight (Mn) in the range 4000-40,000 g/mol, a viscosity number in the range 30-350 g/ml (measured in o-dichlorobenzene/phenol (weight ratio 50/50) at a concentration of 0.5 wt.% polyester amide P1 at a temperature of 25 DEG C) and a melting point in the range 50-220 DEG C; and a quantity of a compound D equivalent to 0-5 mol % of the molar quantity of components (a1) must also be used for the production of the polyester amides P1, said compound D having at least three groups capable of ester formation. The invention also concerns other biologically degradable polymers and thermoplastic moulding materials, processes for manufacturing the same, the use thereof for producing biologically degradable moulded articles and adhesives, and biologically degradable moulded articles, foams and blends with starch which can be obtained from the polymers or moulding materials according to the invention.
Abstract:
The invention relates to a mewthod for controlling the thickening of aqueous systems containing silicates, characterized in that at least one copolymer having an average molecular weight Mw of more than 60000 g/mol is added to said aqueous system and that the copolymer consists, essentially statistically, of monoethylenically unsaturated monocarboxylic acids, monoethylenically unsaturated dicarboxylic acids and, optionally, other ethylenically unsaturated comonomers, the indicated amounts referring to the total amount of all used monomers, respectively.
Abstract:
The invention relates to superabsorbing foam which contains 0.01 wt. % - 10 wt. % of fibres which are made of wood pulp or waste paper, in relation to the dry weight of the foam.
Abstract:
The invention relates to a method for controlling the thickening of aqueous, silicate-containing systems, characterized in that at least one copolymer having an average molecular weight (Mw) of at least 3000 g/mol and not more than 60000 g/mol is added to said aqueous system and that the copolymer is, essentially statistically, made of monoethylenically unsaturated monocarboxylic acids, monoethylenically unsaturated dicarboxylic acids and eventually ethylenically unsaturated comonomers. The method is also characterized in that the polymerization is carried out in the presence of 0.01 to 100 mol-%, in relation to the total amount of all COOH groups of the mono- and dicarboxylic acids, of at least one base for producing the copolymer, the indicated amounts in wt.-% each referring to the total amount of all used monomers.
Abstract:
A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams containing units derived from monoethylenically unsaturated acids, which comprises treating the formed articles with at least 0.5% by weight of a polymer containing primary and/or secondary amino groups and having a molar mass of at least 300, the formed foam articles thus obtainable and use of the wet strength enhanced formed foam articles in hygiene articles.
Abstract:
The aim of the invention is to produce polymeric networks. An aldehyde or a mixture of aldehydes or precursors thereof are condensed with a component (A) that contains amines, optionally in the presence of a solvent (S). The component (A) contains at least one amine (I) which can be obtained by means of amination of polymeric ethers of the 1.4 butanediol and is provided with at least two free amino groups. Said component (A) also and optionally contains at least one amine of the formula (II): Y (-NH2)n and optionally contains at least one amine of the formula (III): (Z-)(q-r)Y (-NH2)r, wherein Y means n-valued organic radicals, Y means q-valued organic radicals, Z means functional single-valued radicals, n means an integral value of 1 to 20, q means an integral value of 2 to 20 and r means an integral value of 1 to 19 with the proviso that 1
Abstract:
The following are claimed: (A) biodegradable polyester P1, preparable by reaction of a mixt. comprising: (a1) a mixt. comprising: (a11) 35-95 mol.% of adipic acid and/or one or more ester-forming derivs. of this, (a12) 5-65 mol.% of terephthalic acid and/or one or more ester-forming derivs. of this, and (a13) 0-5 mol.% of a cpd. contg. sulphonate gps., the total of mol.% in (a11)-(a13) being 100 mol.%; and (a2) a dihydroxy cpd. selected from 2-6C alkane-diols and 5-10C cycloalkane-diols. The molar ratio of (a1) to (a2) is 0.4-1.5:1. In addn., 0.01-5 mol.% (based on the molar amt. of component (a1)) of a cpd. D, which comprises at least three gps. capable of forming ester gps., are also used for prodn. of polyester P1. Polyester P1 has (a) a mol.wt. (Mn) of 5000-50000 g/mol; (b) a viscosity no. of 30-350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a P1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. (B) biodegradable polyester P2, preparable by reaction of a mixt. comprising: (b1) mixt. comprising: (b11) 20-95 mol.% of adipic acid and/or one or more ester-forming deriv. of this, (b12) 5-80 mol.% of terephthalic acid and/or one or more ester- forming deriv. of this, and (b13) 0-5 mol.% of a cpd. contg. sulphonate gps., the total of mol.% in (b11)-(b13) being 100 mol.%; (b2) a dihydroxy cpd. as (a2) above; (b3) 0.01-100 wt.% (based on the amt. of component (b1) of a hydroxycarboxylic acid B1 which is of formula (Ia) or (Ib); and (b4) 0-5 mol.% (based on the amt. of component (b1)) of a cpd. D. The molar ratio of (b1) to (b2) is 0.4-1.25:1. Polyester P2 has (a) a mol.wt. (Mn) of 5000-80000 g/mol; (b) a viscosity no. of 30 - 450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a P2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. p = a whole no. from 1-1500; r = a whole no. from 1-4; G = phenylene, (CH2)k, C(R)H and C(R)HCH2; k = 1-5; R = Me or Et. (C) biodegradable polyester Q1 which have: (a) a mol.wt. (Mn) of 5000-100000 g/mol; (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a Q1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. Q1 are obtained by reaction of a mixt. comprising; (c1) polyester P1 and/or a polyester PWD; (c2) 0.01-50 wt.% (based on (c1)) of a hydroxycarboxylic acid B1; and (c3) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of P1 and/or PWD) of a cpd. D. Polyester PWD is obtainable by reaction of components (a1) and (a2) in a molar ratio of (a1) to (a2) of 0.4-1.5:1. Polyester PWD have: (a) a mol.wt. (Mn) of 5000 - 50000 g/mol; (b) a viscosity no. of 30 - 350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a PWD concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. (D) biodegradable polyesters Q2 which have: (a) a mol.wt. (Mn) of 6000 - 60000 g/mol; (b) a viscosity no. of 30-350 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a Q2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-170 degrees C. Q2 are obtained by reaction of a mixt. comprising: (d1) 95-99.9 wt.% of polyester P1 and/or PWD; and (d2) 0.1-50 wt.% of a diisocyanate C1; and (d3) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of P1 and/or PWD) of a cpd. D. (E) biodegradable polymers T1 which have: (a) a mol.wt. (Mn) of 10000 - 100000 g/mol; (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a T1 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. T1 are obtd. by reaction of polyester Q1 with (e1) 0.1-5 wt.% (based on the amt. of Q1) of diisocyanate C1 and (e2) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of Q1 via the polyester P1 and/or PWD) of a cpd. D. (F) biodegradable polymers T2 which have: (a) a mol.wt. (Mn) of 10000 - 100000 g/mol/. (b) a viscosity no. of 30-450 g/ml (measured in o-dichlorobenzene/phenol (wt. ratio 50/50) at 25 degrees C and a T2 concn. of 0.5 wt.%); and (c) a m.pt. of 50-235 degrees C. T2 are obtained by reaction of polyester Q2 with (f1) 0.01-50 wt.% (based on the amt. of Q2) of hydroxycarboxylic acid B1 and (f2) 0-5 mol.% (based on the amt. of component (a1) used in prodn. of Q2 via the polyester P1 and/or PWD) of a cpd
Abstract:
La invencion se refiere a un metodo para limpiar superficies utilizando piezas de espuma aminoplastica, producidas a partir de: (a) espumas aminoplasticas de celda abierta que tienen una densidad en el intervalo de 5 a 500 kg/m3 y un diametro de poro promedio en el intervalo de 1 (m a 1mm, o (b) espumas aminoplasticas de celdas abiertas que tienen una densidad en el intervalo de 5 a 500 kg/m3 y un diametro de poro promedio en el intervalo de 1 (m a 1mm, los cuales han sido tratadas: (b1) con una formulacion acuosa consistente en por lo menos un compuesto (b-1) que contiene por lo menos un grupo semianimal o animal por molecula o por lo menos un copolimero, el cual tiene por lo menos un comonomero polimerizado que contiene grupos OH o grupos (-dicarbonilo o grupos epoxido, o (b2) con por lo menos un polimero (c-2) que contiene grupos carboxilo y/o grupos acido carboxilico que son solidos a temperatura ambiente y que tienen un peso molecular Mn en el intervalo de 1000 y 1,000,000 g/mol. De acuerdo con la invencion, las piezas de espuma aminoplastica que se utilizan tienen un diametro promedio que abarca entre 0.1 mm y 50 mm.