摘要:
The invention relates to the use of a substantially clear and at least largely solventless, aqueous, one-component polyurethane dispersion based on the reaction products ofa polyol mixture consisting completely or partly of polypropylene glycol,a mixture of polyfunctional isocyanates consisting completely or partly of .alpha.,.alpha.,.alpha.',.alpha.'-tetramethyl xylene diisocyanate (TMXDI),a functional component capable of salt formation in aqueous solution andoptionally a chain-extending agentas a universal household adhesive and to a process for its production in the absence of inert solvents.
摘要:
An adhesive paste, free of water, based on a reaction product of a polyisocyanate component and a co-reactant selected from the group consisting of a polyol, a monofunctional fatty derivative component and mixtures thereof, wherein the reaction product contains moisture reactive isocyanate groups.
摘要:
Adhesive sticks are obtained using water-based preparations of synthetic polymers of adhesive character and soaps which act as shaping gel-forming components. Mixtures of polyurethanes and polyvinyl pyrrolidone are used as the synthetic polymers. The polyurethane may be in the form of a dispersion and produced by reacting at least one polyol, at least one polyfunctional isocyanate and a component capable of salt formation in alkaline aqueous solution and/or a nonionic hydrophilic modifying agent.
摘要:
A cyanoacrylate adhesive contains an added ester, the ester used being at least one partial and/or full ester of monobasic or polybasic aliphatic carboxylic acids containing 1 to 5 carbon atoms directly attached to one another and monohydric to pentahydric aliphatic alcohols containing 1 to 5 carbon atoms directly attached to one another, the number of carbon atoms directly attached to one another in the other aliphatic groups being at most three where one aliphatic group contains 4 or 5 carbon atoms.
摘要:
A pasty single component polyurethane adhesive is provided. The NCO terminated polyurethane prepolymer is substantially linear, contains from 2.0% to 8.0% based on the weight of the prepolymer, of highly disperse silica and up to 10% by weight, based on the weight of the prepolymer, of additives. The one component adhesive has an Expressed Volume of at least 2,000 g/min measured according to DIN EN 29048 and a Creep Resistance measure according to DIN EN 27390 below 6.0 after 5 minutes.
摘要翻译:提供糊状单组分聚氨酯粘合剂。 NCO封端的聚氨酯预聚物基本上是线性的,含有基于预聚物重量的2.0%至8.0%,高分散二氧化硅和基于预聚物重量的至多10%重量的添加剂。 单组分粘合剂具有根据DIN EN 29048测量的至少2000g / min的表现体积和5分钟后根据DIN EN 27390的蠕变电阻测量值。
摘要:
This invention relates to a jointing compound of an acrylate/acrylonitrile copolymer containing 2 to 8 carbon atoms in the alcohol component as binder and fatty compounds as plasticizer and also fillers and auxiliaries. Epoxystearic acid methyl ester in particular may be used as the fatty compound while a butyl acrylate/acrylonitrile copolymer in particular may be used as the acrylate/acrylonitrile copolymer. The combination of the two substances results in jointing compounds characterized by a dramatic improvement in elasticity (resilience). Accordingly, they are particularly suitable for substrates with different coefficients of thermal expansion.
摘要:
A hydraulic setting composition is provided. The composition when set has improved water absorption properties. The composition contains a hydraulically setting inorganic material such as calcium sulfate and an auxiliary of the formula A(—X[—CH2]p—ZY)k where A can be a linear or branched C1-24 alkyl group, a linlear or branched C2-24 alkenyl group each of which can be unsubstituted or substituted with 1 to 4 OH group, C6-24 aryl group and alkyl substituted C6-24 aryl groups each; having a valance K, Z is SO3 or COO−, Y is a proton, a metal ion or ammonium, P is from 1 to 30 and X is identical or different and can be where n is from 0-30, m is from 2 to 8, K is from 1 to 4, q is from 1-10, L is O, S or UR3, R2 and R3 are identical or different, linear or branched C1-12 alkyl or a polymer having a molecular weight (Mn) of at least 300 and contains anionic, cationic or anionic and cationic monomer units.
摘要:
Polymerization of a fatty acid or fatty acid derivatives containing conjugated double bonds and alkenes or alkynes containing electron acceptor substituents provides compositions useful as coatings, adhesives, sealants, fillers and the like.
摘要:
Described is an NCO-group-containing polyurethane prepolymer madefrom polyisocanyates and polyols derived from natural oils. The invention is characterized in that the polyol is obtained by transesterification in the presence of basic lithium compounds. Together with a tertiary amine used to accelerate the moisture curing, the storage stability is thus increased considerably. Up to 4.0 mmol of the lithium compound is used per kilogram of polyol, and 0.1 to 2.0% by wt. of the amine, relative to the total weight of the composition, is used as the accelerator. The polyurethane prepolymer is suitable not only for the production of adhesives but also for the production of foamed materials, in particular those dispensed from throw-away pressure vessels.
摘要:
The process of curing a radical-polymerizable multicomponent mixture containing an olefinically-unsaturated compound with ambient air by adding to the mixture an alkyl, cycloalkyl or aryl hydrazone of an aliphatic, cycloaliphatic or aromatic aldehyde or ketone which forms a hydroperoxide as an initiator for curing the mixture.