摘要:
A water-based concrete or masonry sealant includes an acrylic- or silicone-modified reaction product of an unsaturated drying oil and an alkyd, the reaction product being dispersed in aqueous solution; and a dispersion of metal salt catalyst in aqueous solution. A method of treating a previously sealed concrete or masonry substrate, includes the steps of: applying to the previously sealed concrete or masonry substrate a sealant comprising an acrylic- or silicone-modified reaction product of an unsaturated drying oil and an alkyd, the reaction product being dispersed in aqueous solution; an aqueous dispersion of metal salt catalyst, and water; and allowing the sealant to cure.
摘要:
A coated article which includes a cement fiberboard substrate and a radiation-curable coating system applied to the substrate. The coating system includes one or more olefinic compounds and one or more PVC dispersion resins, and may be provided in the form of one or more coating compositions that may be applied in one or more layers.
摘要:
Beta-spodumene ceramic articles such as gas turbine regenerators are rendered more resistant to attack by moist sulfur oxidecontaining gases such as the exhaust gases from certain hydrocarbon combustion processes by providing a protective coating of a silicone fluid or a silicone resin thereon.
摘要:
Apparatus for gas-liquid contact having a contact body mounted in a housing, said contact body being formed from a plurality of corrugated sheets of a fibrous web material impregnated with a polyepoxy-cross-linked plasticized rubber composition.
摘要:
A mixture of methylpolysiloxanes and polymethyl-methacrylate or vinylchloride copolymers in organic solvent is employed to impart water-repellency to masonry and gypsum-based building materials, inter alia.
摘要:
A COATING AND IMPREGNATING COMPOSITION SUITABLE FOR PROVIDING A WATER REPELLENT, ABRASION, SCRATCH, CHIP AND DIRT RESISTANT COATING ON A CERAMIC INSULATING SURFACE COMPRISING A SOLVENT, A SUPENSION OF A RESIN A SILCONE AND A PARTIALLY HYDROLYZED TETRA-ALKYL ORTHOSILICATE.
摘要:
A COATING AND IMPREGNATING COMPOSITION SUITABLE FOR PROVIDING A WATER REPELLENT, ABRASION, SCRATCH, CHIP AND DIRT RESISTANT COATING ON A CERAMIC INSULATING SURFACE COMPRISING A SOLVENT, A SUSPENSION OF A RESIN, A SILICONE AND A PARTIALLY HYDROLYZED TETRA-ALKYL ORTHOSILICATE.
摘要:
A composition that may be used to retain moisture within fresh concrete as it cures to optimize the curing of the concrete may include one or more hardening and densifying agents and one or more temporary moisture sealing agents. Additionally such a composition may include a siliconate. The hardening and densifying agent of such a composition may penetrate the surface of fresh concrete to react with free lime, providing the fresh concrete with a strong surface. The temporary moisture sealing agent may form a moisture barrier on the surface of the fresh concrete to prevent moisture from escaping from the fresh concrete before the fresh concrete has sufficiently cured. The temporary moisture sealing agent may degrade within a matter of days, facilitating its removal from the surface of the concrete once the concrete has cured and enabling further treatment of the surface without undue delay.
摘要:
A process for applying a coating containing a fusible material to a cutting edge of a cutting tool includes heating the fusible material to fuse the same, the heating being provided by microwave energy.