Abstract:
The invention relates to a method for producing carboxylate-rich copolymers from monoethylenically unsaturated monocarboxylic and dicarboxylic acids having an average molecular weight Mw of at least 3000 g/mol and at least 20.1 % by weight of the dicarboxylic acid by radical polymerization in the presence of 2 to 19.9 molecular equivalents of an organic amine, based on the total amount of all COOH groups of the monocarboxylic and dicarboxylic acids at a temperature of not more than 130 °C. The invention also relates to carboxylate-rich copolymers which have a low neutralization degree and are obtained by the inventive method, and to the use of said copolymers for treating surfaces and as bonding agents for fiber bonding.
Abstract:
A description is given of a pressure-sensitive adhesive solution comprising one or polymers dissolved in an organic solvent of high relative permittivity. The polymers are capable of ionically crosslinking after removable of the organic solvent and are made from monomer mixtures comprising low Tg C4 to C20 alkyl (meth)acrylates, cationic monomers having at least one cationic group selected from amino groups and quaternary ammonium groups, and anionic monomers having at least one protonated or deprotonated acid group. The pressure-sensitive adhesive solutions can be used for producing pressure-sensitive hotmelts and self-adhesive articles such as adhesive tapes, adhesive labels or protective films.
Abstract:
The present invention relates to a hair styling and restyling composition comprising a cosmetically acceptable pressure sensitive adhesive polymer with restyling performance and improved washout from hair, to a pressure sensitive adhesive polymer with glass transition temperatures of lower than −20° C., to a process for preparing said pressure sensitive adhesive polymer and to use of said pressure sensitive adhesive polymer for improving the restylability and washout behavior of a hair styling and restyling composition.
Abstract:
The present invention relates to a formulation comprising: i) an aqueous polymer dispersion comprising: a) at least one homo- or copolymer P containing in the form of polymerized units at least one ethylenically unsaturated monomer; b) at least 6% by weight, based on the total of the ethylenically unsaturated monomer, of at least one saccharide-compound S; wherein in a) the at least one homo- or copolymer P is obtained by polymerization of the at least one ethylenically unsaturated monomer in the presence of at least a part of the at least one saccharide-compound S from b); ii) at least one tackifier.
Abstract:
The invention relates to a pressure sensitive adhesive dispersion comprising a polymer P1, dispersed in water and formed by emulsion polymerization. The polymer P1 is formed from a monomer mixture containing (a) at least 40 wt % of C4 to C20 alkyl(meth)acrylate, which, when polymerized as homopolymers, have a glass transition temperature of -30° C or less, (b) at least 0.05 wt % of (meth)acrylate monomers having a substituent of the formula (I), wherein X stands for CH 2 , O, NH or NR and R stands for a C1 to C4 alkyl group, and (c) at least 0.1 wt % of acid monomers. The monomer mixture contains either at least 0.05 wt % of glycidyl(meth)acrylate and/or the pressure sensitive adhesive dispersion contains at least one other polymer P2 which has glycidyl groups.
Abstract:
Described is a process for preparing an aqueous pressure-sensitive adhesive dispersion from ethylenically unsaturated, free-radically polymerizable monomers. In a first stage, a first polymer is prepared by free-radical emulsion polymerization. In a second stage, an aqueous polymer dispersion is prepared in the presence of the first polymer, where the glass transition temperature calculated for a polymer prepared from the monomers of the second stage is less than -20°C. The monomers of the first stage comprise monomers with acid groups. The polymerization of the first stage takes place at a low pH of less than 5. The acid groups of the first polymer are neutralized during, or before and during, the polymerization of the second stage to an extent such that the pH of the polymer dispersion at the end of the second stage is greater than 5. The aqueous pressure-sensitive adhesive dispersions can be used for producing self-adhesive articles, especially self-adhesive labels and adhesive tapes.