摘要:
Provided is a curable resin material capable of controlling variations in specific gravity in a resin molded body obtained therefrom. The curable resin material according to the present invention contains a polyol compound, an isocyanate compound, a powder of a urethane resin molded body containing a urethane resin and a glass fiber, and a long reinforcing fiber, wherein the curable resin material has an isocyanate index of 110 or more and 120 or less.
摘要:
A two-component paint system (1) comprises a medium pressure canister (10) with a paint, at least one solvent and at least one propellant, and a high pressure canister (20) with a hardener, at least one solvent, at least one propellant and an inert gas or inert gas mixture. An adapter (30) is configured to transfer the content of the high pressure canister (20) into the content of the medium pressure canister (10). The internal pressure of the high pressure canister (20) is at least 2 bars higher than the internal pressure of the medium pressure canister (10).
摘要:
A method for manufacturing a shaped object from a composite material which includes thermoset particles as filler material, fibers as reinforcement material and polyurethane as binder. The method includes the steps of: a) providing a dry mixture of fiber material and thermoset particles with a predefined moisture content; b) the addition and uniform distribution of polyol and isocyanate to the dry mixture; c) curing the mixture in a mould at 15-60° C. under a pressure of at least 50 bar. A shaped object produced with this method.
摘要:
The present invention is a process for preparing an aqueous solution of a hydrophobically modified alkylene oxide poly(urethane-urea-allophanate) thickener by contacting isocyanate reactive groups with a stoichiometric excess of a diisocyanate, followed by reaction with water. The thickener surprisingly shows a maintenance or improvement in hiding in paint formulations while maintaining other critical rheological properties.
摘要:
The present technology provides a foam-forming composition comprising at least one polyol, at least one isocyanate, at least one copper catalyst composition, and at least one surfactant. The copper catalyst composition may comprise a copper (II) compound dissolved in a solvent. In one embodiment, the copper catalyst composition comprises (Cu(II)(acac)2) dissolved in DMSO.
摘要:
Acrylic polyols comprising hydroxy functional acrylic copolymers/resin involving an acrylic backbone having modified castor oil sourced hydroxyl functionalities and synthesized by co-reacting modified hydroxy functional Castor Oil with variety of acrylic monomers, styrene or its derivatives and optionally hydroxyalkyl acrylates/methacrylates and ethylenic monomer through solution polymerization in presence of an initiator. The hydroxyl functionality is solely or partially imparted through renewable Castor Oil wherein the resins were synthesized at upto 100% solids and at hydroxyl values ranging from 25-150 (mg KOH/gm). The synthesized resins when cured with suitable polyisocyanates or amino resin cross-linkers provided tough, glossy and chemical & weather resistant coatings.
摘要:
The polymerizable composition for an optical material of the present invention includes: (A) a compound having a carbon-carbon triple bond and at least one group selected from an isocyanate group and an isothiocyanate group in a molecule; and (B) a polythiol compound.