摘要:
Use of coloured polymeric systems having a colour which changes on stretching, to indicate the tension of hygiene or medical articles in contact with the body.
摘要:
The invention relates to a polyamide shaped part which can be obtained by anionic polymerization of a lactam containing microcapsules comprising a capsule core of latent heat-storage material and a polymer as the capsule wall. The invention also relates to a method for producing this shaped part and to its use in vehicle construction, for battery housings, for housings for small electronic units, and for systems for keeping food hot.
摘要:
The present invention relates to microcapsules, comprising a capsule core and a capsule wall, wherein the capsule wall is composed of 50 to 90% by weight of one or more C 1 -C 24 -alkyl esters of acrylic and/or methacrylic acid (monomers I), 10 to 50% by weight of one or more polyvinyl monomers (monomers II), and 0 to 30% by weight of one or more monounsaturated, non-ionizable monomers (monomers III), which are different from monomers I, in each case relative to the total weight of the monomers. The invention further relates to a method for the production of said microcapsules, and to the use thereof in binding building materials, textiles and heat transfer fluids.
摘要:
A thermoplastic molding composition is provided, which comprises A) from 30 to 90% by weight of at least one thermoplastic polymer, B) from 10 to 70% by weight of microcapsules with a capsule core made of latent-heat-accumulator material and a polymer as capsule wall, where the latent-heat-accumulator material has its solid/liquid phase transition in the temperature range from -20 °C to 120 °C, and C) from 0 to 60% by weight of one or more further additive, where each of the percentages by weight is based on the total weight of components A) to C) and these give a total of 100% by weight, obtainable via mixing in the melt of components A), B), and optionally C) in a multiscrew extruder, where the multiscrew extruder comprises, along the direction of conveying, in this sequence, at least one feed zone, one plastifying zone, one homogenizing zone, and one discharge zone, and the feed of the microcapsules B) into the multiscrew extruder takes place at a site after-in the direction of conveying- the plastifying zone. And also a process for producing the composition and uses of the composition for producing fibers, foils, moldings, and foams are provided.
摘要:
The present invention relates to a gypsum wallboard, comprising two cover layers and a gypsum core, wherein the gypsum core contains micro-capsules having a lipophilic capsule core and a capsule wall composed of 30 to 100% by weight, relative to the total weight of the monomers, of one or more monomers (monomers I) selected from the group consisting of C 1 -C 24 -alkyl esters of acrylic and methacrylic acid, acrylic acid, methacrylic acid, and maleic acid, 0 to 70% by weight, relative to the total weight of the monomers, of one or more monomers comprising at least two non-conjugated ethylene double bonds (monomers II), which are not soluble or hardly soluble in water, and 0 to 40% by weight, relative to the total weight of the monomers, of one or more other monomers (monomers III), and at least one polymer P, which has a glass transition temperature T g of -60 to 160°C. The invention further relates to a method for producing same.
摘要:
The invention relates to a method for improvement of the colour brilliance of a coloured polymer system, made up of a matrix and discrete polymer particles, distributed in the matrix according to a defined 3D lattice, obtained by production of a film of an emulsion polymer with a core/shell construction, whereby the emulsion polymer is obtained by polymerisation of monomers in at least one first stage (core monomers) and subsequent polymerisation of monomers in at least one further second stage (shell monomers), characterised in that the polymerisation of the monomers of the core is carried out in the presence of an absorber of electromagnetic radiation, in particular, a UV absorber.
摘要:
The invention relates to microcapsules comprising a paraffin composition as a capsule core and a polymer as a capsule wall, which comprises 40 to 90 wt % of one or more C1-C24-alkylesters of acrylic and/or methacrylic acids (monomers I), 10 to 60 wt % of one or more ethylenically unsaturated cross-linking agents (monomers II), wherein at least 80 wt % relative to the ethylenically unsaturated cross-linking agents is a cross-linking agent having three or more ethylenically unsaturated radicals, and 0 to 30 wt % of one or more single ethylenically unsaturated monomers (monomer III) different from monomers I, each relative to the total weight of the monomers, wherein the paraffin composition comprises 35 to 98 wt % of n-octadecane, 1 to 10 wt % of at least one C20-C24-aliphate and/or diisopropylnaphthaline, 1 to 5 wt % of at least one wax having a melting point >40°C, and 0 to 50 wt % of n-hexadecane, each relative to the paraffin composition. The invention further relates to a method for producing same, and to the use thereof in binder construction materials, textiles, and heat carrier fluids.
摘要:
Use of coloured polymeric systems having a colour which changes on stretching, to indicate the tension of hygiene or medical articles in contact with the body.