Abstract: The present invention relates to an acoustic baffle device for sealing a cavity of a vehicle body at a predetermined cross section of the cavity, comprising a piece of sealing material that is formed in a shape corresponding to but being smaller than the shape of the cross section of the cavity. The acoustic baffle device of the invention is characterized in having a flap assembly having a lower neck defining a passage for a flexible tube or a similar device, said lower neck having a flap secured in closed position by a locking device and being connected preferably to the lower end of the lower neck through means that permit the reversible opening of the above-defined passage. Furthermore, the present invention relates to a flap assembly useful for such an acoustic baffle device, and to a process for sealing a cavity of a vehicle body at a predetermined cross section of the cavity.

Abstract: The invention relates to an adhesive composition containing a special silane cross-linking polymer and fine-particle coated calcium carbonate and soot. 20 to 50 ml of fine-particle coated calcium carbonate and soot are provided for every 100 g of polymer, and the volume ratio of fine-particle coated calcium carbonate and soot is between 70:30 and 30:70. The inventive adhesive composition is characterized by having good mechanical properties, a high electrical volume resistance and a good applicability.

Abstract: Highly weatherable, moisture-curable, one-component polyurethane composition which is curable with moisture in the air is provided at lower costs. The composition contains a main component which will form a polyurethane resin upon curing, and additives. The additives are one or more photocurable materials selected from the group consisting of unsaturated acrylic compounds, polyvinyl cinnamate, and azide-containing compounds; and a hindered amine photostabilizer. The additives may preferably further contain a thixotropy endowing agent comprising a blocked amine compound forming primary or secondary amino group with moisture, or a polyurea compound.

Abstract: The invention relates to polymers in a solid state which may be obtained by reaction of at least one polymer, produced from at least one monomer, selected from unsaturated mono- or di-carboxylic acids, or analogues of unsaturated mono- or di-carboxylic acids and optionally at least one ethylenically-unsaturated monomer with at least one polymer which is terminated at one end by terminal groups which are non-reactive under normal reaction conditions and hydroxy- or amino-functionalised at the other end thereof and, optionally, at least one amine.

Abstract: The invention relates to a prefabricated construction element for buildings in prefabricated construction, comprising a core element (10) and at least one reinforcement element (12). In order to absorb high tensile and transverse forces without the danger of developing cracks, the reinforcement element is configured as a flat material element (12) from fiber-reinforced plastic that is fixated on a lateral face (20) of the core element (10) in a form-fit and/or a material fit.

Abstract: Disclosed are compositions containing at least one epoxy resin A with on average more than one epoxy group per molecule; at least one epoxy adduct B with on average one epoxy group per molecule; at least one thixotropic agent C, based on a urea derivative in a non-diffusing support material; and at least one curing agent D for epoxy resins, which is activated by an increased temperature. Also disclosed are compositions containing at least one core-shell polymer E and/or filler F and/or reactive diluent G.

Abstract: A composition comprising at least one polyurethane prepolymer A having isocyanate end groups, prepared from at least one polyisocyanate with at least one polyol A1 and optionally at least one polyol A2, wherein A1 linear polyoxyalkylene polyol having a degree of unsaturation <0.04 meq/g; A2 is polyol in an amount of 0-30% by weight, based on the total amount of A1+A2; and at least one polyaldimine.

Abstract: Described is a radically curable composition apt particularly as adhesive and sealant and especially for use on damp mineral bases. It features monomers and oligomers of different hydrophilicity/-phobicity in specific proportions.

Abstract: Described is an adhesive composition with a high elasticity, measured in terms of elongation at break, and an elastic behavior approaching the ideal Hook law in the stress-strain diagram. Said adhesive composition comprises (a) at least one monofunctional meth(acrylic) monomer A whose homo-polymer or co-polymer exhibit a glass transition temperature (Tg) between 40° C. and 140° C.

Abstract: Described are adhesive compositions comprising (i) at least one reactive monomer (A) selected from ethylenically unsaturated carboxylic acid derivatives and mixtures of such derivatives, said one or more derivatives preferably being one or more esters, (ii) at least one liquid elastomer (B) in a molecular weight range of 1000-9000 which is functionalized with ethylenically unsaturated groups, (iii) at least one impact modifier (C) that is a core shell polymer that does not dissolve but swells in the monomer (i), and (iv) at least one free radical initiator and at least one catalyst, whereby the amount of B referred to the total amount of A+B is 15 to 60% by weight, and whereby optionally either said initiator, or said catalyst is present separately, in a further component or paste, respectively. Preferably the amount of C referred to the total amount of A+B+C=5-30% by weight.

Abstract: The invention relates to an adhesive composition containing a special silane cross-linking polymer and fine-particle coated calcium carbonate and soot. 20 to 50 ml of fine-particle coated calcium carbonate and soot are provided for every 100 g of polymer, and the volume ratio of fine-particle coated calcium carbonate and soot is between 70:30 and 30:70. The inventive adhesive composition is characterized by having good mechanical properties, a high electrical volume resistance and a good applicability.

Abstract: The invention relates to a reinforcing bar for mineral building materials, particularly for cement. The inventive reinforcing bar (10) is made of a bar of plastic material reinforced by fiber, which has a central, elongate core (12) and several ribs (14) which extend along the length of the core, which are disposed at an angular distance from each other, which form a cross or a star in the cross section thereof and which are twisted around the core axis (16) in a helical manner.

Abstract: Described are polymers and cement admixtures which reduce drop in fluidity with time. Said admixture comprises at least one polymer of the present invention and at least one polymer A. The polymer of the present invention comprises side chains of which at least 10 weight-% can be cleaved in alkaline medium. The polymer of the present invention is an acrylic polymer which comprises side chains connected to the backbone by ester linkages. These side chains may be alkyl, hydroxy alkyl, cycloalkyl or polyoxyalkylene groups. Polymer A is a cement dispersing agent. The combination of polymer A with the polymer of the present invention in a weight ratio of 0.1:10–10:1, and preferably 1:10–10:1 reduces the drop in fluidity with time of cementitious compositions.

Abstract: The invention relates to polymers in a solid state which may be obtained by reaction of at least one polymer, produced from at least one monomer, selected from unsaturated mono- or di-carboxylic acids, or analogues of unsaturated mono- or di-carboxylic acids and optionally at least one ethylenically-unsaturated monomer with at least one polymer which is terminated at one end by terminal groups which are non-reactive under normal reaction conditions and hydroxy- or amino-functionalised at the other end thereof and, optionally, at least one amine.

Abstract: The invention relates to a device for reinforcing a hollow element (16) of a motor vehicle, especially a column of the body. The inventive device consists of at least one elongate, dimensionally stable plastic support frame (10) insertable into the hollow element (16) which is provided with free supporting surfaces (18) that can be engaged gaged with the inner wall (32) of the hollow element (16).

Abstract: The invention relates to a static mixer (1) having a cylindrical mixer channel formed by a mixer channel housing (5) and a multistage mixer blade element (3) which is disposed in said mixer channel and used for mixing layers of hardening accelerator paste in a stream of highly viscous PU. Discharge openings (7) are provided in the inlet area of the static mixer. Said discharge openings introduce a partial stream of hitherto unmixed highly viscous PU into. secondary channels (6) disposed parallel to the mixer channel. The secondary channels are connected to feeder openings (8) disposed in the wall of the mixer channel downstream of the mixer wing element (3) when viewed in the direction of flow. The unmixed PU is guided in the secondary channels (6) and enters the outer area of the stream coming from the mixer wing element via the feeder openings where the mixed layers of hardening accelerator paste are contained.

Abstract: A reactive polyester polyol is described that is obtainable by half ester formation starting from at least one dicarboxylic anhydride and at least one hydroxyl group carrying, saturated or unsaturated fatty acid and/or a respective ester, in particular castor oil and/or ricinoleic acid, as well as final esterification by at least one polyol.

Abstract: Novel undercoats for use on porous bases such as, for example, concrete are disclosed. Said undercoats contain or comprise at least one epoxy resin, at least one latent hardener and at least one solvent. The above are characterize in being easy to produce, contain no isocyanate groups and form a good ageing-resistant adhesion, in particular, with single component isocyanate-free sealants, cross-linked by means of silane groups.

Abstract: Polymers for cement dispersing admixtures, which show different performing properties in concrete are described. All polymers are based on a composition of reactants, namely a) a poly(acrylic acid), b) a polyalkyleneglycol-monoalkylether and, optionally c) a ?-amino-polyalkylene-glycol-?-alkylether and/or d) a primary or secondary amine. By keeping the composition of reactants constant and varying only the reaction time, polymers with different properties can easily be achieved. Such polymers are suitable for pre-cast, readymix or for increasing workability over time, just depending on reaction time. Polymers of the invention can be used as single polymer or in polymer blends. For this, the kinetics of the used polymer analogous condensation reaction was intensively studied. Additionally, the benefit of amines as reactant regarding stability and hydrolysis velocity of cleavable side groups was investigated.

Abstract: The ends of carbon plates reinforcing supporting elements, such as concrete beams, are divided into at least two splines having approximately the same thickness and are glued in the appropriate retaining slots of a terminal element. The splines form an angle in relation to each other. This assembly is then glued to the traction side of the supporting element, whereby the carbon plates are directly prestressed by the terminal elements in relation to the supporting element. The terminal element can be inserted into an appropriate groove in the supporting element or glued directly on the surface of the supporting element and/or doweled, optionally by using a transverse tensioning device.