摘要:
The invention relates to a two-component polyurethane adhesive based on a polyol component and a polyisocyanate component. An adhesive bond, produced with said adhesive, of two sheets of steel coated with a cathodic electrodeposition paint has an impact peel strength of at least 11 N/mm according to ISO 11343 at a temperature of 40° C. The invention also relates to an additive for polyurethane adhesives and to the use of said additive.
摘要:
The present invention relates to, 1,3-oxathiolane-2-thione compounds of the general formula (I): wherein R1 and R2 are the same or different, each of which denotes a straightchain or branched alkoxy residue with 1 to 6 carbon atoms or an aryloxy or aralkyloxy residue, R3 is different or the same as R1 or R2 or an aliphatic residue, an amino residue, a halogen residue, an aromatic or heteroaromatic residue, or an araliphatic or heteroaraliphatic residue, R4 is a bridging group selected from the groups consisting of aliphatic, heteroaliphatic, araliphatic, heteroaraliphatic, aromatic and heteroaromatic groups and R5 is hydrogen, an aliphatic, heteroaliphatic, araliphatic, heteroaraliphatic, aromatic, heteroaromatic, cycloaliphatic or heterocycloaliphatic group or R4 and R5 form a cycloaliphatic, cycloheteroaliphatic, aromatic or heteroaromatic residue, which is optionally substituted with an aliphatic, heteroaliphatic residue serving as a bridging group to the silicone atom and X and Y are different and selected from oxygen and sulfur and mixtures of such compounds. A further objective is to provide a method of production of such compounds, compounds synthesized from the 1,3-oxathiolane2-thiones and their use in a variety of coating and bonding applications.
摘要:
The invention relates to a hemostatic skin adhesive dressing having a discrete shape, which is characterized in that it comprises a single-layer polymer film having at least one astringent and/or hemostatic active ingredient that is dissolved or dispersed therein.
摘要:
The invention relates to a hemostatic skin adhesive dressing having a discrete shape, which is characterized in that it comprises a single-layer polymer film having at least one astringent and/or hemostatic active ingredient that is dissolved or dispersed therein.
摘要:
The invention relates to the use of selected reactive binder constituents (binder constituent(s) A), preferably in a mixture with other binder constituents (B), in overlap adhesives for applying round labels to plastic bottles. Binder constituents (A) are at least partially made in the form of reactive adhesives reacting in various stages, based on multi-functional macro monomer compounds which can be progressively cured according to various reaction mechanisms, whereby the molecular structure of said compounds contains olefinically unsaturated radically reactive groups in addition to moisture-curing isocyanate groups. Monofunctional and/or preferably multi-functional radically reactive mixed constituents are used as binder constituents (B), especially those that are radically bi-functional and devoid of isocyanate groups.
摘要:
The invention relates to an adhesive containing two components A and B, whereby component A comprises both a functional group which can be polymerized by means of irradiation with UV beams as well as at least one functional group which is able to react with a compound having at least one acidic hydrogen atom. Component B comprises at least two functional groups which can be polymerized by means of irradiation with UV beams or with electron beams. The adhesive is suitable for the production of composite materials and exhibits a high flexibility with a good initial bonding.
摘要:
The description relates to reactive contact adhesives based on multifunctional macro-monomer compounds (multi-functional macromers) curable in steps by different reaction mechanisms, which may also be present mixed with one-stage reactive mixture components. The new contact adhesives are distinguished in that they contain substituted urethane oligomer compounds as multi-functional macromers which have moisture-hardening isocyanate groups beside olefinically unsaturated radically reactive constituents. These macromer compounds are preferably mixed with reactive components which are preferably mixed with reactive components which are preferably radically curable reactive diluents and/or moisture-reactive isocyanate compounds with a softening and/or cross-linking function. The description also relates to the production of such adhesive mixtures and their use as contact adhesives in the context of a multi-stage curing process in which the adhesive is first applied in a thin layer to the solid surfaces to be joined and then subjected to a first radical curing stage. The reaction of this first stage is preferably triggered by the effect of UV radiation. The adhesive coatings produced have excellent contact adhesive properties and, after the components to be joined have been brought together, cure to the cross-linked adhesive mass under the effect of atmospheric moisture.
摘要:
The invention relates to salts from at least one imidazole of general formula (I), wherein R1, R2, R3 and R4 are the same or different and represent hydrogen, an alkyl group with 1 to 20, preferably 1 to 10, especially 1 to 4 carbon atoms or a substituted or unsubstituted aryl group or arylalkyl group with 6 to 10 carbon atoms, and at least one aliphatic or aromatic monocarboxylic or dicarboxylic acid. The molar ratio of carboxylic acid to imidazole based on the functionality of the acid is 1:1.1 to 1:6. The invention also relates to a method for producing the imidazole salts, to their use and to epoxy resins that contain these salts.