RUBBER REPLACEMENT ARTICLES AND THEIR USE AS FOOTWEAR COMPONENTS

• Main Authors: KRALIC, RONALD J, MILLERO, EDWARD R. JR, WINTERS, CHRISTINA, ZHOU, HONGYING, KUTCHKO, CYNTHIA, DONALDSON, SUSAN FUNDY, FENG, XUDONG, BREON, JONATHAN P, KABAGAMBE, BENJAMIN
• Format: Patent
• Language: English; French
• Published: 13.08.2020
• 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; CHARACTERISTIC FEATURES OF FOOTWEAR; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FOOTWEAR; HUMAN NECESSITIES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PARTS OF FOOTWEAR; PERFORMING OPERATIONS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Rubber replacement articles prepared from curable compositions are provided. The curable compositions comprise: an isocyanate-functional prepolymer; a curing agent comprising a mixture of polyamines, wherein at least one polyamine has an amine equivalent weight of 125 to 250; and an abrasion resistant additive comprising organic particles demonstrating a volume average particle size of at least 5 microns. The isocyanate-functional prepolymer is (i) a reaction product of a polyisocyanate and a polyamine having primary and/or secondary amino groups; and/or (ii) a reaction product of a polyisocyanate and a polyol. La présente invention concerne des articles de remplacement du caoutchouc préparés à partir de compositions durcissables. Les compositions durcissables comprennent : un prépolymère à fonctionnalité isocyanate ; un agent de durcissement comprenant un mélange de polyamines, au moins une polyamine ayant un poids équivalent d'amines de 125 à 250 ; et un additif résistant à l'abrasion comprenant des particules organiques présentant une taille moyenne de particule en volume d'au moins 5 µm. Le prépolymère à fonctionnalité isocyanate est (i) un produit réactionnel d'un polyisocyanate et d'une polyamine comportant des groupes amino primaire et/ou secondaire ; et/ou (ii) un produit réactionnel d'un polyisocyanate et d'un polyol.