摘要:
La présente invention concerne un nouveau polyuréthane à terminaisons XDI. La présente invention concerne également l'utilisation dudit polyuréthane pour fabriquer une composition adhésive, de mastic et/ou de revêtement de surface, notamment pour le domaine de la construction, qui soit stable dans le temps en termes de viscosité.
摘要:
Die vorliegende Erfindung betrifft einen zweikomponentigen Polyurethanklebstoff mit hoher Festigkeit und Dehnbarkeit bei gleichzeitigem schnellem Haftungsaufbau, geeignet als struktureller Klebstoff. Der Klebstoff enthält ein Triol, ein Diol, gegebenenfalls ein Polyamin, ein Polyisocyanat-Semiprepolymer und ein Isocyanatgruppen aufweisendes Polyurethanpolymer in bestimmten Verhältnissen.
摘要:
A two part non-sag polyurethane construction sealant or adhesive is provided with the properties of low modulus, high elongation, good paint adhesion, and primerless adhesion to concrete surfaces. The sealant or adhesive is prepared using a polyol, and optionally an epoxy silane and/or a melamine compound, in the base component of the formulation; and a prepolymer reaction product including the residues of xylenol or xylenol and an additional polyol, and a polymeric isocyanate, an aromatic diisocyanate, or a polymeric isocyanate and an aromatic diisocyanate, and optionally an epoxy silane and/or a melamine compound, in the activator component of the formulation.
摘要:
The present invention relates to an improved composition comprising a blend of diisocyanates of Formula (II) derived from their corresponding dianiino alkyl esters obtained from soy protein source, wherein R is an alky! and n is 1-4, and methods of making and using such compositions as construction material resin binders, in particular, wood resin binders and/or adhesives.
摘要:
Non-aqueous, liquid coating compositions which contain at least one polyisocyanate A, at least one isocyanate-functional polyurethane resin B differing from the at least one polyisocyanate A and at least one binder C with groups reactive towards the isocyanate groups of A and B, wherein the at least one polyisocyanate A is not solid at room temperature and/or is present in dissolved form and wherein the at least one polyurethane resin B is present as particles having a melting temperature of 40 to 180 0 C.
摘要:
A polyisocyanate mixture comprising a polyisocyanate [A] represented by the general formula (I) and a polyisocyanate [B] which is derived from at least one member selected from among aliphatic and alicyclic diisocyanates, is substantially free from monomeric diisocyanates, and has a number-average molecular weight of 750 or below: (I) wherein R is C2-5 alkylene; n is 1 or 2; and m is 0 or 1.
摘要:
The invention relates to low viscosity, weak migrating polyurethane binding agents lacking highly volatile monomers which carry isocyanate groups. The invention also relates to a method for producing such polyurethane binding agents and their application for coating, especially for gluing, objects.
摘要:
The invention concerns a method of preparing compact and preferably cellular polyurethane elastomers by reacting a) high molecular polyhydroxyl compounds and optionally b) low molecular chain-extending and/or crosslinking agents with c) 1,5-naphthylene diisocyanate and at least one additional aromatic diisocyanate, selected from the group comprising toluylene diisocyanate, diphenylmethane diisocyanate, 3,3'-dimethyl diphenyl diisocyante, 1,2-diphenylethane diisocyanate and phenylene diisocyanate, and/or aliphatic diisocyanate with between 4 and 12 carbon atoms and/or cycloaliphatic diisocyanate with between 6 and 18 carbon atoms, the structural components (a), (c) and optionally (b) advantageously being reacted by the prepolymer method, in the presence or absence of d) catalysts, e) expanding agents and f) additives. The invention further concerns isocyanate prepolymers suitable for this method.
摘要:
A method for making a copolymer polyol includes (a) forming a pre-compounded thermoplastic polymeric composition by compounding from 10 wt% to 90 wt% of a solid functional additive component with from 10 wt% to 90 wt% of a polystyrene component, (b) melting the pre-compounded thermoplastic polymeric composition to form a melted thermoplastic polymeric composition, (c) combining the melted thermoplastic polymeric composition with a carrier polyol component in the presence of a stabilizer component to form a pre-mixture that includes the pre-compounded thermoplastic polymeric composition dispersed within a continuous phase of the carrier polyol component, and (d) cooling the pre-mixture to form the copolymer polyol.