AQUEOUS COAGULATABLE POLYMER DISPERSION AND USE THEREOF AS AN ADHESIVE

• Main Authors: SCHMIDT, CHRISTIAN, TERFLOTH, CHRISTIAN
• Format: Patent
• Language: English; French
• Published: 16.05.2023
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES; WORKING-UP

The invention relates to an aqueous coagulatable polymer dispersion comprising at least one polymer which is dispersed in an aqueous phase, thermoplastic microspheres which contain a propellant, and at least one additional component which is selected from the group consisting of polyols, polyamines, and thermoplastic polymers. The invention further relates to a coagulate which can be obtained by the thermal and/or mechanical and/or ultrasonically initiated coagulation of the aqueous polymer dispersion according to the invention, to an adhesive comprising or consisting of the coagulate, to a substrate which is completely or partly coated with said coagulate, to a method for producing such a coated substrate, and to coated substrates which can be obtained using said method. The coagulate can be used as an adhesive or as a binder in 3D printing methods. La présente invention concerne une dispersion aqueuse de polymère coagulable comprenant au moins un polymère dispersé dans une phase aqueuse, des microsphères thermoplastiques contenant un propulseur, et au moins un composant supplémentaire choisi dans le groupe constitué par les polyols, les polyamines et les polymères thermoplastiques. La présente invention concerne en outre un coagulat pouvant être obtenu par coagulation thermique et/ou mécanique et/ou initiée par ultrasons de la dispersion aqueuse de polymère selon l'invention, une colle comprenant ou étant constituée du coagulat, un substrat qui est revêtu totalement ou partiellement avec ce coagulat, un procédé de production d'un tel substrat revêtu ainsi que des substrats revêtus pouvant être obtenus par le biais de ce procédé. Le coagulat peut être utilisé comme colle ou comme liant dans des procédés d'impression 3D.