5 results about "Synthetic copolymer" patented technology

The application belongs to the field of underground engineering grouting material research and application, and provides a diffusion boundary controllable grouting material for underwater accumulation reinforcement and a preparation method thereof, which is composed of the following raw materials by weight: material matrix component 800-1000 parts, comprehensive additive 0-25 parts, instant sodium silicate 0-200 parts, and water 600-800 parts. The comprehensive additive comprises an anti-dispersion agent and a water reducing agent; the anti-dispersion agent is mainly composed of the following raw materials by weight: high polymer 7-8 parts, modified cellulose ether 9-10 parts, natural polysaccharide 1-3 parts, and synthetic copolymer 1-2 parts. The material has the advantages of good underwater anti-dispersion capacity, controllable setting time and easy accumulation, and is conducive to realizing the filling of the underwater goaf.

The invention discloses an antifouling and anti-fingerprint coating as well as a preparation method and application thereof, the preparation method comprises the following steps: S01, preparing the coating: mixing 30-50 wt% of acrylic resin, 0.3-3 wt% of monohydroxy-terminated polydimethylsiloxane PDMS with the molecular weight of 1500-2000 Da, 3-10 wt% of melamine, 10-12 wt% of ethylene glycol monobutyl ether, 20-30 wt% of n-butyl alcohol, 3-6 wt% of epoxy resin and auxiliaries, and mechanically stirring for 30-60 minutes at 25-30 DEG C; and S02, PDMS grafting pre-reaction: carrying out ultrasonic treatment on the coating at 50-70 DEG C for 1-3 hours, so that PDMS is grafted onto the acrylic resin. According to the preparation method provided by the invention, effective grafting of the low-surface-energy PDMS in the resin is realized without pre-synthesis of a copolymer or pretreatment of a base material through an ultrasonic-assisted grafting technology; the prepared coating does not contain fluorine, is environment-friendly, has excellent antifouling property, fingerprint resistance, high transparency and good adhesive force and durability, is suitable for various base materials such as stainless steel and glass, is simple in process and is suitable for large-scale production.

This invention discloses a method for preparing a natural-synthetic copolymer saline-alkali soil conditioner, comprising the following steps: Step 1: Preparation of cotton straw biochar; Step 2: Preparation of a carboxymethyl cellulose free radical initiation system; Step 3: Preparation of a copolymer precursor mixed dispersion; Step 4: Preparation of the natural-synthetic copolymer saline-alkali soil conditioner. This invention uses natural macromolecular carboxymethyl cellulose to modify acrylic polymers, giving them good water absorption and salt resistance. Adding biochar to the copolymer network effectively improves soil porosity and promotes the formation of soil aggregates, while also increasing soil organic matter content. The method of this invention uses mild reaction conditions and environmentally friendly materials, achieving the improvement of the physical and chemical properties of saline-alkali soil.

Bioactive synthetic copolymers having a poly(norbornene) backbone comprising one or more repeating units represented by general formula (I) and one or more repeating units represented by general formula (II) are provided. Also provided are bioactive polymers, materials comprising the bioactive synthetic copolymers, methods for preparing the bioactive synthetic copolymers, and methods for preparing the bioactive polymers. JPEG2023554220000044.jpg79158

The present invention relates to macromolecular blockers of non-specific interactions of an analyte and other components of the analytical system with the solid phase, which considerably decreases the non-specific interactions during the assay. The macromolecular blocker comprises synthetic copolymer or homopolymer, selected from the group comprising polyacrylamide, polymethacrylamide, polyacrylate, polymethacrylate, poly(N-(2- hydroxypropyl)methacrylamide), poly(2-oxazoline); to which at least one hydrophobically-active anchor is attached via a covalent bond, said hydrophobically-active anchor enabling suppression of non-specific interactions in immuno assays. The invention further relates to a method of preparing and to the use of said macromolecular blockers for capturing of specific antibodies or antigens or other molecules on the surface of the solid phase. The present invention enables to replace animal-derived proteins with a synthetic macromolecular blocker that is not only more effective in blocking activity itself, but it is also defined in its structure, has high batch-to-batch reproducibility, and does not need to be tested for the presence of viruses and other pathogens.