Abstract:
PROBLEM TO BE SOLVED: To provide a solvent free coloring composition having extremely good abrasion resistance under wet condition and scrub washing resistance in wet condition even at high pigment volume concentration (PVC) of more than 75%. SOLUTION: The coloring composition containing a binder (I), a pigment (II), a pigment dispersant (III), optionally an inorganic filler (IV) and an auxiliary (V), but not a solvent is provided, wherein the main component of the binder (I) is a copolymer which is produced in an aqueous emulsion using a free radical by monomer mixtures consisting of a monomer (a) having a glass transition temperature of less than 20 deg.C when forming homopolymer, a monomer (b) having a glass transition temperature of more than 50 deg.C when forming homopolymer, an acidic monomer (c), and another monomer (d).
Abstract:
PROBLEM TO BE SOLVED: To obtain an adhesive composition having excellent levels of technical characteristics for application such as peel strength, shear strength, wet adhesive strength, dry adhesive strength and heat resistance. SOLUTION: This aqueous composition comprises 1-60 mass % of a polymer (A) composed of (a) 10-50 mass % of a
Abstract:
The invention relates to a method for producing a conversion product (A), which comprises the following steps: (i) reacting, under radical conditions, a reaction mixture containing at least one radically convertible monomer (a) in the presence of at least one radical initiator and one compound of formula (I), wherein R1 to R4, independent of one another, represent hydrogen, a non-substituted or substituted alkyl radical, cycloalkyl radical, aralkyl radical, a non-substituted or substituted aromatic hydrocarbon radical with the provision that at least two of the radicals R1 to R4 represent a non-substituted or substituted aromatic hydrocarbon radical, or the radicals R and R or R and R , in pairs, represent a substituted or non-substituted aromatic hydrocarbon radical with 6 to 18 C atoms and a functional group which, in conjunction with the C-C double bond in general formula (I), comprises a multiple bond between a C atom and a heteroatom, whereby during the reaction, the reaction mixture consists of 10 or less wt. % water.
Abstract:
The invention relates to a method for producing polymers. According to said method, at least one first ethylenically unsaturated monomer is subjected to a radically induced polymerization in the presence of stable free radicals or sources of stable free radicals and a compound containing at least a free sulphanyl group, to obtain a polymer, whereby the molar ratio of the compound containing a free sulphanyl group to the stable free radicals ranges between 0.05 and 1.1. The rate of polymerization is significantly increased by the compound containing a free sulphanyl group.
Abstract:
A method for producing a reaction product (A) comprising the following step (i): (iv) a reaction mixture comprising at least one radically reactable monomer (a) is reacted in radical conditions in the presence of at least one radical initiator and a compound of formula (I), wherein R1-R4 represent independently from each other hydrogen, a respectively unsubstituted or substituted alkyl radical, a cycloalkyl radical, an aralkyl radical, an unsubstituted or substituted aromatic hydrocarbon radical, under the proviso that at least two from R1-R4 represent an unsubstituted or substituted aromatic hydrocarbon radical.
Abstract:
Solvent-free, pigment-containing compositions contain a binder based on an aqueous copolymer dispersion obtained by radical emulsion polymerization of a mixture containing 0.05-15 wt.% of itaconic acid, anhydride or salt as acidic comonomer, a pigment, a pigment distributor of DIN 53402 acid number below 600, optionally an inorganic filler, and conventional additives. Solvent-free, pigment-containing compositions contain: (A) binder based on an aqueous copolymer dispersion obtained by radical emulsion polymerization of a mixture comprising by wt.: (i) a monomer whose homopolymer has a Tg below 20 degrees C (45-69.95%); (ii) a monomer whose homopolymer has a Tg above 50 degrees C (30-54.95%); (iii) itaconic acid, anhydride or salt (0.05-1.5%); and (iv) one or more comonomers (0-2%); (B) a pigment; (C) a pigment distributor of DIN 53402 acid number below 600; (D) optionally an inorganic filler; and (E) conventional additives.
Abstract:
A process for preparing a reaction product (A), comprising the following stage (i):(i) reacting under free-radical conditions a reaction mixture comprising at least one free-radically reactable monomer (a) in the presence of at least one free-radical initiator and of a compound (I) of the formula: in which R1 to R4 each independently of one another are hydrogen, a substituted or unsubstituted alkyl radical, cycloalkyl radical or arakyl radical, or an unsubstituted or a substituted aromatic hydrocarbon radical, with the proviso that at least two of R1 to R4 are an unsubstituted or a substituted aromatic hydrocarbon radical in aqueous phase.
Abstract:
Micro-suspension polymers are obtained by dispersing a mixture of radically-polymerizable monomers with isocyanate-reactive groups, monomers without such groups, diphenyl-ethene or -ethane and blocked polyisocyanate in water in presence of protective colloid and then polymerizing in presence of a radical initiator. A method for the production of micro-suspension polymers involves: (1) dispersion of a mixture of (A1) 0.1-60 wt.% radically-polymerizable monomer(s) with isocyanate-reactive functional group(s), (A2) 40-99.9 wt% radically-polymerizable comonomer(s) without NCO-reactive groups, (A3) 0-20 wt.% 1,1-diphenylethene or 1,1-diphenylethane and (A4) 0.1-100 wt.% blocked polyisocyanate(s) in water in presence of a protective colloid, to give a dispersion with an average particle diameter (d50) of 0.08-100 microns, followed by (2) polymerisation of the droplets to a conversion of at least 50 wt.% in presence of 0.1-20 wt.% radical initiator(s) (amounts based on the total wt. of A1 and A2, taken as 100 wt.%). Independent claims are also included for: (a) micro-suspension polymers (I) or dispersions, made by this method; (b) fibres, molded products, film or varnish obtained from (I) or their dispersions; (c) a method for varnishing or coating substrates by coating with a dispersion of (I), drying and heating to above 80 deg C.