58results about How to "Moderate conditions" patented technology

A production process for substituted phenylacetic acids or ester analogs thereof is disclosed. In this process toluene or toluene substituted with various substituents, an alcohol, an oxidant and carbon monoxide are used as raw materials to obtain compounds comprising structure of phenylacetic acid ester or analogs thereof by catalysis of the complex catalyst formed from transition metal and ligand, and such compounds are hydrolyzed to obtain various substituted phenylacetic acid based compounds. This type of compounds and their derivatives serve as important fine chemicals used widely in the industries of pharmaceuticals, pesticides, perfume and the like.

The invention discloses a method for carrying out regeneration treatment on useless lubricating oil, and belongs to the technical field of an oil product quality improving technological process in a petroleum processing technology. The method comprises a solvent treatment step, a membrane separation step, a hydrogenation modification step, an adsorption, supplementation and purification step and a normal-pressure fractionation step. According to the method disclosed by the invention, most of metal and polar additives can be removed by adopting a solvent treatment method and a membrane separation method, aromatic hydrocarbon, heteroatoms, undissolved matters and most of residual carbon and residual metal can be removed through the hydrogenation modification step of a stationary bed, and residual polar additives can be further removed through the adsorption, supplementation and purification step, so that the light stability and the thermal stability of a product are increased, high-quality lubricating oil base oil can be produced, and byproducts of high-quality naphtha and high-quality diesel can be produced.

The invention discloses a preparation method of a composite flocculation algae inhibitor, and belongs to the technical field of environmental protection. The preparation method is characterized by comprising the following steps: the preparation of chitosan-loaded algae inhibitor powder; the immobilization of alga inhibiting bacteria and the cationic modification of a flocculation agent; and compounding of the chitosan-loaded algae inhibitor and the biological composite modified flocculation agent. The invention also discloses the composite flocculation algae inhibitor. According to the composite flocculation algae inhibitor prepared by the preparation method disclosed by the invention, a good flocculation and algae removal effect can be achieved; a microbial agent with an alga inhibiting function is introduced while algae removal by flocculation is carried out, and a synergistic effect with the algae inhibitor is achieved, so that a long-acting algae inhibiting capability of water bodyis improved, and over-propagation of algae is prevented. According to the preparation process provided by the invention, the raw materials are low in price, the preparation cost is low, and the natural ecological system cannot be damaged by the materials, so that the composite flocculation algae inhibitor can be used as an emergency algae removal treatment agent for water body repair engineering,and can exert a long-acting algae inhibiting effect.

The present invention provides a bacillus sp. having a deposit access number of CGMCC NO. 5744 and a hyaluronidase produced by the bacillus and the amino acid sequence of the hyaluronidase is shown in SEQ ID NO: 2. The present invention further relates to a process for preparing oligomeric hyaluronic acid or salts thereof or low-molecular-weight hyaluronic acid or salts thereof by using the bacillus or the hyaluronidase produced thereby. The produced oligomeric hyaluronates or low-molecular-weight hyaluronates have advantages such as good transdermal absorption ability, high purity, no cytotoxicity, potent antioxidant ability. The present invention also provides use of the bacillus having a deposit access number of CGMCC NO. 5744, or the hyaluronidase, oligomeric hyaluronates or salts thereof, low-molecular-weight hyaluronates or salts thereof produced by the bacillus in the fields of osmetics, food products and medicines.