Abstract:
The first aspect in the present invention provides a composition that includes (A) 100 parts by mass of an organoalkoxysilane represented by the following formula (1) and/or a compound obtained by partial hydrolysis and condensation of said organoalkoxysilane: R1aSi(OR2)4-a . . . (1), (B) 0.3 to 20 parts by mass of an aluminum dicarboxylate represented by the following formula (2): (R3COO)2Al(OH) . . . (2), and (C) 0.3 to 20 parts by mass of an aliphatic acid having 6 to 24 carbon atoms. The second aspect in the present invention provides a composition that includes components (A), (B) and (C) and further (D) 0.01 to 10 parts by mass of a dicarboxylic acid having 6 to 30 carbon atoms. Further, the present invention provides a method for making a porous material less water-absorptive by applying the composition to a surface of said porous material and a porous material modified by the method.
Abstract:
A device for withdrawing heat energy from air. The device includes a layer of a substantially hydrophobic coating on a heat exchange surface. The coating has a lower surface tension than water, to repel water and prevent the formation of water condensation on the surface. For example, the coating can be a fluoropolymer such as 1,1,2,3,3,3 hexafluoropropene.
Abstract:
To provide a water/oil repellent agent and a water/oil repellent composition which is capable of providing an article surface with a sufficient water/oil repellency, while placing little burden on the environment.One comprising a reaction product obtained by reacting a fluoromonool having a polyfluoroalkyl moiety having at most 6 carbon atoms as an alcohol, an alkane monool having at least 18 carbon atoms, and MDI or a polymeric MD, and by treating an article with such a water/oil repellent agent, a sufficient water/oil repellency can be imparted, while placing little burden on the environment. By treating the above-mentioned article with the water/oil repellent composition of the present invention, a high quality water/oil repellency can be imparted to the article.
Abstract:
Compositions which inhibit corrosion and alter the physical properties of concrete (admixtures) are prepared from salt mixtures of hydroxycarboxylic acids, carboxylic acids, and nitric acid. The salt mixtures are prepared by neutralizing acid product mixtures from the oxidation of polyols using nitric acid and oxygen as the oxidizing agents. Nitric acid is removed from the hydroxycarboxylic acids by evaporation and diffusion dialysis.
Abstract:
The present invention relates to a new mineral matter particle hydrophobization agent and to its various uses for the surface treatment of mineral matter particles.
Abstract:
The present invention relates to corrosion inhibiting, freeze point lowering compositions comprising a mixture of a freeze point lowering agent and a corrosion inhibiting compound. The corrosion inhibiting, freeze point lowering compositions can be used in deicing brines or deicing solutions.
Abstract:
In some variations, the invention provides a deicer composition comprising alkali acetate, a solvent (such as water) for the alkali acetate, and a corrosion inhibitor comprising lignin or a lignin derivative. The acetate and the lignin or lignin derivative are preferably each derived from the same biomass feedstock. In some embodiments, the alkali is selected from the group consisting of potassium, sodium, magnesium, calcium, and combinations thereof. In some embodiments, the alkali acetate is present in a concentration from about 30 wt % to about 99 wt %. Deicer products may be a crystallized or dried form of the deicer composition.