摘要:
A bio-sourced cationic polymer is obtained by reaction of epihalohydrin that is least partially renewable and non-fossil, and at least one compound of formula (R1)2N(CH2CH2NH)n(CH2CH2N(R2)2)m that is at least partially renewable and non-fossil. R1 and R2 are, independently of one another, a hydrogen atom H or an alkyl chain including 1 to 8 carbon atoms, n=0 to 3, m=0 or 1. When n=m=0, then a hydrogen atom H is covalently bound to the nitrogen atom N of the N(R1)2 group.
摘要:
A regulating cementitious material for promoting hydration of Portland cement is provided. The regulating cementitious material may include ingredients by weight as follows: ye'elimite, 27˜68 parts; anhydrite, 29˜68 parts; lithium nitrite, 2˜5 parts; ethylene glycol monoisopropanolamine, 0.14˜0.29 parts; triethanolamine acetate, 0.04˜0.09 parts; and polyglycerol, 0.04˜0.09 parts. An early strength of Portland cement can be improved through a cooperative hydration between minerals and an enhanced solubilization of a complexing agent.
摘要:
A concrete crack repair material based on nano materials includes raw materials as follows: seaweed, sulphoaluminate cement, natural sand, nano-silica fume, calcium formate, fly ash, anhydrous calcium sulphoaluminate, a polyester fiber, a water reducing agent, a corrosion inhibitor and water. By reasonably selecting the raw materials of the concrete crack repair material and making a reasonable ratio of the raw materials, the concrete crack repair material is obtained with excellent performance such as good compressive strength, bending strength and bond strength, and excellent impermeability and frost resistance. The concrete crack repair material can be used for the concrete crack repair in the marine environment, which has very important application values.
摘要:
The present invention provides a composition and method for controlling air voids in aqueous systems such as paints, coatings, sealants, adhesives, mastics, cements, mortar, masonry, or concrete, which comprises the reaction product of an oxidizing agent and a compound comprising at least one polyalkoxylated polyalkylene polyamine, at least one polyalkyoxylated polyethyleneimine, or a mixture thereof.
摘要:
Methods and compositions are provided that relate to weighted elastomers. The weighted elastomers may comprise an elastomer and a weighting agent attached to an outer surface of the elastomer. An embodiment includes a method comprising providing a fluid that comprises a weighted elastomer, wherein the weighted elastomer comprises an elastomer and a weighting agent attached to an outer surface of the elastomer; and introducing the fluid into a subterranean formation.
摘要:
A mix including at least one hydraulic and/or pozzolanic material and at least one water-soluble cationic polymer, the cationic polymer having a density of cationic charges greater than 0.5 meq/g and an intrinsic viscosity less than 1 dl/g, and the hydraulic and/or pozzolanic material not being clinker, nor limestone, nor gypsum, nor calcium sulphate, nor anhydrous calcium sulphate, nor hemi hydrated calcium sulphate, nor plaster, nor lime.
摘要:
Jointing cement intended in particular for fastening together a plurality of filter blocks of a filtering body of an exhaust gas particle filter of an internal combustion engine of a motor vehicle, having a silicon carbide (SiC) content of between 30% and 90%. The cement according to the invention includes at least 0.05% and less than 5% of a thermosetting resin, the percentages being percentages by weight relative to the total weight of the thermosetting resin and the mineral material, apart from the possible water.
摘要:
Compositions including a comb polymer and an Fe(III)-complexing agent X selected from the group consisting of thiocyanates, condensed phosphates, amines, amino acetic acids, oxycarboxylic acids and compounds of the formula (V). The invention also relates to a method for stabilizing comb polymers in the presence of Fe(III) using such Fe(III)-complexing agents X.
摘要:
The present invention relates to a bituminous composition comprising at least one bitumen and at least one polycondensate capable of forming a supramolecular assembly comprising one or more associative group(s). The present invention also relates to the use of such bituminous composition for the preparation of asphalt mixtures useful for the coating of rolling surfaces, for the preparation of water-proofing coatings, and the for the preparation of adhesive formulations.
摘要:
A mounting mat for an exhaust gas treatment device including inorganic fibers, organic binder, antioxidant, optionally clay and optionally intumescent material. The exhaust gas treatment device includes a housing, a fragile catalyst support structure resiliently mounted within the housing, and the mounting mat disposed in a gap between the housing and the fragile catalyst support structure. Additionally disclosed are methods of making a mounting mat for an exhaust gas treatment device and for making an exhaust gas treatment device incorporating the mounting mat.