Abstract: A method of bonding substrates having different coefficients of thermal expansion, especially in the shell construction of modes of transport or white goods, using a one-component thermosetting epoxy resin composition containing toughness improvers based on terminally blocked polyurethane prepolymers.

Abstract: Methods in which toughness improvers based on terminally blocked polyurethane prepolymers are used to increase the maximum linear expansion of single component heat-curing epoxy resin compositions, in particular for joining substrates having different thermal expansion coefficients, in particular in the framework of transport agents or white goods.

Abstract: A reinforcing element for reinforcing structural elements including at least one channel on an outer side. The outer side forms a shoulder next to the channel. Furthermore, the reinforcing element is provided for forming an open system in terms of an adhesion of the reinforcing element in the structural element, wherein, in a use state of the reinforcing element in the structural element, a space is formed between the shoulder of the reinforcing element and the structural element, which is open relative to an adjacent cavity of the structural element.

Abstract: A reinforcing element for reinforcing structural elements including at least one channel on an outer side. The outer side forms a shoulder next to the channel. Furthermore, the reinforcing element is provided for forming an open system in terms of an adhesion of the reinforcing element in the structural element, wherein, in a use state of the reinforcing element in the structural element, a space is formed between the shoulder of the reinforcing element and the structural element, which is open relative to an adjacent cavity of the structural element.

Abstract: A method of bonding two shaped bodies S1 and S2 including the steps of: a) providing shaped body S1; b) arranging shaped body S2 wherein shaped body S1, forming cavity between two shaped bodies, c) introducing one-component thermosetting epoxy resin compositions into cavity, wherein one-component thermosetting epoxy resin composition is one-component thermosetting epoxy resin composition including: at least one epoxy resin A having average of more than one epoxy group per molecule; at least one curing agent B for epoxy resins activated by elevated temperature; at least one polyester polyol PP obtainable by reaction of at least one diol having structure HO—(CH2)x?—OH the value of x?=2-10, and —at least one dicarboxylic acid having structure HOOC—(CH2)y?—COOH and derivatives of dicarboxylic acid, value of y?=8-18, and wherein proportion of polyester polyol PP is 1.5% to 20% by weight, based on total weight of one-component thermosetting epoxy resin composition.

Abstract: A method of bonding two shaped bodies S1 and S2 including the steps of: a) providing shaped body S1; b) arranging shaped body S2 wherein shaped body S1, forming cavity between two shaped bodies, c) introducing one-component thermosetting epoxy resin compositions into cavity, wherein one-component thermosetting epoxy resin composition is one-component thermosetting epoxy resin composition including: at least one epoxy resin A having average of more than one epoxy group per molecule; at least one curing agent B for epoxy resins activated by elevated temperature; at least one polyester polyol PP obtainable by reaction of at least one diol having structure HO—(CH2)x?—OH the value of x?=2-10, and —at least one dicarboxylic acid having structure HOOC—(CH2)y?—COOH and derivatives of dicarboxylic acid, value of y?=8-18, and wherein proportion of polyester polyol PP is 1.5% to 20% by weight, based on total weight of one-component thermosetting epoxy resin composition.

Abstract: Heat-curing epoxy resin compositions are characterized by high impact strength, good storage stability, and a low curing temperature. The epoxy resin compositions are suitable for use as a construction shell adhesive and for producing structural foams. They can already be cured in so-called bottom-baking conditions. Furthermore, it has been found that the use of an accelerator of the formula (Ia) or (Ib) results in an increase of the impact strength of heat-curing epoxy resin compositions.

Abstract: A system of connected body elements for a motor vehicle includes a first body element and a second body element. The first body element has at least one duct on a surface, wherein a shoulder is formed next to the duct. The system furthermore includes an adhesive which is arranged at least partially in the duct and at least partially on the shoulder and adhesively bonds the first body element to the second body element. A connection region, directly adjoining the shoulder, of the surface of the first body element is free here from adhesive. A first space between shoulder and second body element and a second space between connection region and second body element are open towards each other.

Abstract: Methods in which toughness improvers based on terminally blocked polyurethane prepolymers are used to increase the maximum linear expansion of single component heat-curing epoxy resin compositions, in particular for joining substrates having different thermal expansion coefficients, in particular in the framework of transport agents or white goods.

Abstract: A reinforcing element for reinforcing structural elements including at least one channel on an outer side. The outer side forms a shoulder next to the channel. Furthermore, the reinforcing element is provided for forming an open system in terms of an adhesion of the reinforcing element in the structural element, wherein, in a use state of the reinforcing element in the structural element, a space is formed between the shoulder of the reinforcing element and the structural element, which is open relative to an adjacent cavity of the structural element.

Abstract: A method of bonding substrates having different coefficients of thermal expansion, especially in the shell construction of modes of transport or white goods, using a one-component thermosetting epoxy resin composition containing toughness improvers based on terminally blocked polyurethane prepolymers.

Abstract: A system of connected body elements for a motor vehicle includes a first body element and a second body element. The first body element has at least one duct on a surface, wherein a shoulder is formed next to the duct. The system furthermore includes an adhesive which is arranged at least partially in the duct and at least partially on the shoulder and adhesively bonds the first body element to the second body element. A connection region, directly adjoining the shoulder, of the surface of the first body element is free here from adhesive. A first space between shoulder and second body element and a second space between connection region and second body element are open towards each other.

Abstract: A method of bonding two shaped bodies S1 and S2 including the steps of: a) providing shaped body S1; b) arranging shaped body S2 wherein shaped body S1, forming cavity between two shaped bodies, c) introducing one-component thermosetting epoxy resin compositions into cavity, wherein one-component thermosetting epoxy resin composition is one-component thermosetting epoxy resin composition including: at least one epoxy resin A having average of more than one epoxy group per molecule; at least one curing agent B for epoxy resins activated by elevated temperature; at least one polyester polyol PP obtainable by reaction of at least one diol having structure HO—(CH2)x?—OH the value of x?=2-10, and—at least one dicarboxylic acid having structure HOOC—(CH2)y?—COOH and derivatives of dicarboxylic acid, value of y?=8-18, and wherein proportion of polyester polyol PP is 1.5% to 20% by weight, based on total weight of one-component thermosetting epoxy resin composition.

Abstract: An assembly comprising a substrate 1, a substrate 2 and heat curable adhesive, which is positioned between the substrates 1 and 2, wherein the heat curable adhesive is cured only in a portion of less than 50% of the entire surface covered by the heat curable adhesive. In this manner, the cured parts of the adhesive serve as “chemical screws” which sufficiently fix the substrates together during further processing steps, but do not involve complete curing of the adhesive.

Abstract: A system of a reinforced element of a motor vehicle includes: an element of a motor vehicle; an adhesive, which is disposed on the element; and a sheetlike textile, which is disposed on the element; where the one adhesive likewise forms a matrix resin for fibres of the sheetlike textile and bonds the sheetlike textile to the element.

Abstract: Heat-curing epoxy resin compositions are characterized by high impact strength, good storage stability, and a low curing temperature. The epoxy resin compositions are suitable for use as a construction shell adhesive and for producing structural foams. They can already be cured in so-called bottom-baking conditions. Furthermore, it has been found that the use of an accelerator of the formula (Ia) or (Ib) results in an increase of the impact strength of heat-curing epoxy resin compositions.

Abstract: An impact modifier, which is an isocyanate-terminated polymer, the isocyanate groups of which are partially or completely blocked by reaction with a blocking agent, wherein the isocyanate-terminated polymer is a reaction product of a) one or more polyols including polytetramethylene ether glycol in a fraction of at least 95 wt %, with respect to the total weight of the polyols, and b) two or more polyisocyanates, which include at least one diisocyanate and at least one polyisocyanate having an average isocyanate functionality of 2.5 or more, wherein the molar ratio of isocyanate groups of the one or more diisocyanates to isocyanate groups of the one or more polyisocyanates having an average isocyanate functionality of 2.5 or more lies in the range of 2 to 1 to 20 to 1. The impact modifier is suitable in one-component epoxide resin formulations, one-component epoxide resin glues, but also in two-component epoxide resin formulations.

Abstract: Discussed are heat-curable epoxy resin compositions containing at least one epoxy resin A with, on average, more than one epoxide group per molecule, at least one curing agent B for epoxy resins, which is activated by an increased temperature, at least one terminally blocked polyurethane prepolymer of formula (I) and at least one epoxide-terminated polyurethane prepolymer of formula (II). The epoxy resin compositions are particularly suitable for use as one-component, heat-curable adhesives and are characterized by excellent mechanical properties, high glass transition temperatures and high impact resistance.

Abstract: The invention relates to compositions containing at least one solid epoxide resin A, at least one polymer B of formula (1), at least one thixotropic agent C made from a urea derivative and at least one curing agent for epoxide resins D activated by high temperatures. The compositions are particularly suitable for use as adhesives. Low-temperature impact-resistant adhesives can be produced for use in particular as structural adhesives.

Abstract: The present invention relates to heat-curing epoxy resin compositions, which are characterized by high impact strength, good storage stability, and a low curing temperature. The epoxy resin compositions are suitable for use as a construction shell adhesive and for producing structural foams. They can already be cured in so-called bottom-baking conditions. Furthermore, it has been found that the use of an accelerator of the formula (Ia) or (Ib) results in an increase of the impact strength of heat-curing epoxy resin compositions.