摘要:
A licensing system is provided for transferring license information for at least one license-requiring software component of software-controlled devices. The licensing system comprises a first, portable license data storage medium (3), which is provided with a processor unit (8) and on which at least one license information for the at least one license-requiring software component is stored in a memory unit (9). A second, exchangeable license data storage medium (4; 4.1, 4.2) is provided with a processor unit (10; 10.1, 10.2). A data transfer channel (5) is provided for transferring data between the first license data storage medium (3) and the second license data storage medium (4; 4.1, 4.2). A license detection device (6) is provided which can poll the at least one license information of the first license data storage medium (3) and transfer same to the second license data storage medium (4; 4.1, 4.2) via the data transfer channel (5). The at least one license information can be stored in a memory unit (11; 11.1, 11.2) of the second license data storage medium (4; 4.1, 4.2) and cannot subsequently be polled any longer on the first license data storage medium (3). A license-providing device (7; 7.1, 7.2) is provided which can make available or transfer the at least one license information stored in the memory unit (11; 11.1, 11.2) to the software-controlled device (2) for releasing or blocking the at least one license-requiring software component.
摘要:
A process is provided for the production of a graft copolymer by means of emulsion polymerization. The graft base used is a sulfonate group-containing vinyl ester/ethylene latex which is stabilized exclusively by an anionic emulsifier (CMC.gtoreq.0.5% by weight in H.sub.2 O) and is grafted, preferably with vinyl chloride, without further addition of emulsifier or protective colloid. The graft copolymers according to the invention have good water resistance and very good thermoplastic processability. They are useful as impact modifiers and for the production of articles, such as, soft to semi-hard moldings.
摘要:
A finely-divided, monomodal protective-colloid stabilized aqueous dispersion of a copolymer of at least 75% by weight of units of vinyl chloride and ethylene and optionally copolymerized with up to 25% by weight of units of additional monomers unsaturated at the ethylene bond and having a solids content of 45 to 70% by weight, characterized in that the dispersions are not partially flocculated, the polymer has a mean particle size of 150 to 500 nm measured as mean weight in a disc centrifuge and a polydispersion index of not more than 1.8 and less than 50% of the polymer particles are larger than 1,000 nm and a process for the preparation thereof using a single step radical polymerization of vinyl chloride, ethylene and optionally additional monomers such as vinyl esters useful as dispersion powders, adhesives, binders and concrete additives.
摘要:
Copolymers according to the invention contain a new crosslinking system based on carbonamide and/or N-methylol carbonamide groups in the copolymer, the crosslinked polymers containing the following structural units ##STR1## in which R represents a straight-chain or branched aliphatic hydrocarbon radical having 0 to 9 carbon atoms,R represents a hydrogen atom or a methyl radical, andR represents hydrogen or a --CH.sub.2 OH-- group and have molecular weights of between 10.sup.3 and 10.sup.6.The invention also relates to a process of making the copolymers, which have among other advantages a superior resistance to solvents. They are useful as coating compositions and the like.
摘要:
The invention relates to a process for producing wood fiberboard by pressing wood fibers which have been treated with binder, in which the wood fibers are boiled and milled at elevated temperature under steam pressure in a refiner unit, subsequently are transferred to a blow-line, then dried and finally pressed under pressure and, if desired, at elevated temperature to produce boards, wherein the treatment with binder is carried out using a multi-component binder, preferably with one component A) containing functional groups which are nonreactive at elevated temperature and a second component B) containing functional groups which are reactive at elevated temperature the component A) being added in the refiner unit at a temperature of from 120° C. to 200° C. prior to the milling step, during the milling step, or shortly after the milling step in the front section of the blow-line and component B) being added at a lower temperature of not more than 150° C. at the end of the blow-line or during or after the drying of the wood fibers.
摘要:
Wood particleboard is produced by a process wherein wood particles, optionally comminuted, are treated with a crosslinkable thermoplastic binder comprising A), a copolymer of one or more comonomer units selected from vinyl esters of optionally branched C1-18 alkylcarboxylic acids (meth)acrylic esters of optionally branched C1-15 alcohols, dienes, olefins, vinylaromatics and vinyl halides, and from 0.1 to 50% by weight, of one or more units comprising carboxyl, hydroxy or NH groups, and B), a compound having at least two reactive groups which can react with carboxyl, hydroxy or NH groups, and selected from epoxy, N-methylol, isocyanate and ethylene carbonate groups.
摘要:
The invention relates to a fast-drying rendering and coating composition comprising a binder in the form of an aqueous polymer dispersion or of a water-redispersible polymer powder, and also an organic precipitant, if desired in combination with an inorganic precipitant.
摘要:
A novel process for the preparation of a readily dispersible, pourable dispersion powder comprising emulsion polymerizing in the presence of a free radial initiator a mixture of 1 to 50% by weight of ethylene and 99 to 50% by weight of an ethylenically unsaturated comonomer phase comprising at least one member of the group consisting of (a) 60 to 100% by weight of vinyl chloride, (b) 0 to 40% by weight of monoethylically unsaturated, oil-soluble monomers, (c) 0 to 10% by weight of monoethylenically unsaturated water-soluble monomers having functional groups and (d) 0 to 5% by weight of oil-soluble monomers that are monoethylenically unsaturated and have functional groups or are multiple ethylenically unsaturated and optionally a protective colloid and/or emulsifier at an ethylene pressure of 10 to 150 bar to obtain an aqueous dispersion of a vinyl chloride-ethyelene copolymer, optionally adding to the aqueous dispersion (e) 0 to 40% by weight, based on the VCE-polymer, of at least one water-soluble substance having a T.sub.g .gtoreq.60.degree. C., (f) 0 to 1% by weight, based on the VCE-polymer, of an antifoaming agent, and (g) 0 to 30% by weight, based on the total weight of polymer constituents, of a finely divided antiblocking agent and spray drying or freeze drying the aqueous dispersion to obtain the readily redispersible, pourable powder of a vinyl chloride-ethylene copolymer and the powder produced by the said process and improved coatings, paints, glues and adhesives containing the said redispersible powder.
摘要:
A process for the production of an emulsion polymerization aqueous copolymer dispersion with a solids contents of 45-55% by weight of(a) 75 to 95 parts by weight of acrylic acid and/or methacrylic acid alkyl esters of 1 to 10 carbon atoms of which 20 to 80% by weight have a water solubility of at most 2 g/l and 20 to 80% by weight a water solubility of at least 10 g/l(b) 5 to 25 parts by weight of a mixture of ethylenically-unsaturated, functional and water-soluble monomers, 25 to 100% by weight thereof consisting of unsaturated carboxylic acids.(c) 500 to 1700 parts by weight of a mixture of 70 to 100% by weight of vinyl chloride, 0 to 30% by weight of at least one vinyl ester of saturated carboxylic acids of 2 to 18 carbon atoms and 0 to 1.5% by weight of a poly-unsaturated monomer which possesses a water solubility of at most 5 g/l, and(d) Ethylene with radical initiators in the presence of emulsifiers and optionally other common additives, characterized in that (1) the components (a) and (b) together with 500 to 1000 parts by weight of water and 0.5 to 10 parts by weight of emulsifier are charged at a pH value of 2 to 4 in an autoclave, and their polymerization is begun at a temperature of 50.degree. to 80.degree. C. by addition of an initiator, (2) the component (c) is metered in in the form of an aqueous emulsion as soon as components (a) and (b) are reacted at least 50% and at most 99%, (3) during the metering phase a pH value of 4.5 to 6.5 is maintained, (4) an ethylene pressure of 40 to 80 bars is built up at the time indicated in (2) and (5) before start of polymerization or at the latest at the time indicated in (2) 10 to 50 parts of an inert organic substance having a water solubility of 10.sup.-3 to 200 g/l and a molecular weight of at most 1000 are added.