6 results about "Acetal" patented technology

A thermoplastic polymer composition which is excellent in flexibility, mechanical properties, and moldability, capable of adhering to ceramics, metals, and synthetic resins without a treatment with a primer, and exhibits a high adhesion strength even when exposed to a high temperature environment, and a molded product obtained by using the thermoplastic polymer composition. The thermoplastic polymer composition includes 100 parts by mass of a thermoplastic elastomer (A), 1 to 100 parts by mass of a polyvinyl acetal resin (B), and 0.1 to 300 parts by mass a softener (C). The thermoplastic elastomer (A) is a block copolymer including a polymer block constituted by aromatic vinyl compound units and a polymer block constituted by conjugated diene units or a hydrogenated product of the block copolymer. The polyvinyl acetal resin (B) has a glass transition temperature of 80 to 130° C.

A negative-acting photolithographic printing plate precursor has a unique negative-acting photosensitive composition on a surface. The photosensitive composition contains an acetal polymer, an infrared absorbing dye or pigment, a crosslinking agent for the acetal resin and a photosensitive chemical acid progenitor, and the acetal polymer has within its backbone a structure comprising a particular polymeric moiety derived from a polyvinyl alcohol backbone.

The invention discloses an epoxy monomer based on an acetal structure as well as a preparation method and application thereof. The structural formula of the epoxy monomer based on the acetal structureis shown as a formula (I), wherein the R1 and R2 are respectively at least independently selected from H or OCH3, and R3 is at least selected from H, CH3 or CH2CH3. The preparation method of the epoxy monomer is simple in process and easy for industrial production; the prepared product has more excellent mechanical properties and heat resistance, has higher glass-transition temperature, thermal deformation temperature and degradability, can be applied to the fields of degradable plastics, coatings, adhesives, aerospace and the like, and has economic practicability and industrial application prospects.

The invention belongs to the technical field of compound preparation. The invention relates to a preparation method of phosphatidylglycerol monosodium salt, in particular to a preparation method of phosphatidylglycerol monosodium salt containing two different side chains. The preparation method comprises the following steps: taking D-mannitol as an initial raw material, heating D-mannitol in acetone to generate 1,1,5,6-isopropylidene-D-mannitol; carrying out sodium periodate oxidation and sodium borohydride reduction to obtain iso-propylidene glycerol; carrying out condensation reaction with fatty acid containing an R1 element, then removing acetal protective groups in the presence of acid; selectively protecting primary hydroxyl by using a silane protective agent, reacting secondary hydroxyl with another fatty acid containing a R2 element, removing silane protection, reacting the de-protected product with phosphorus oxychloride and iso-propylidene glycerol, removing acetal protectivegroups by using an acid, and finally carrying out a sodium salt treatment to obtain a final product. The synthesis of phosphatidyl monosodium salt containing two different side chains can be realized,and the production process is simple, environment-friendly and easy to operate.

The invention discloses an amino phosphate water-soluble corrosion inhibitor and a preparation method thereof. The corrosion inhibitor contains, by weight, 30-45 parts of amino phosphate mixed solutions, 4-6 parts of N-methyl thiourea, 5-10 parts of ethylene glycol monomethyl ether, 5-8 parts of formamide, 5-9 parts of p-hydroxybenzoic acid, 1-5 parts of nonylphenol polyoxyethylene ether, 1-2 parts of octyl phenol polyoxyethylene ether, 6-23.5 parts of water, 8-15 parts of vinyl ethylene glycol ether, 0.5-2.5 parts of3-methyl-2-pentene-4-alkynol and 2-6.5 parts of acetaldehyde methyl hexyl acetal. The amino phosphate corrosion inhibitor has good anti-corrosion effects on an oil and gas field collecting and conveying system with high CO2 (partial pressure of 0-5 MPa) and H2S coexistence (the partial pressure of 0-1 MPa).

The invention discloses a polyvinyl alcohol aldehyde acetal group solid lubricant and a preparation method thereof. The polyvinyl alcohol aldehyde acetal group solid lubricant is prepared from the following raw materials by mass percent: 22 to 50% of polyvinyl alcohol aldehyde acetal group resin, 40 to 60% of lubricant, 8 to 15% of friction modifier and 1 to 3% of releasing agent. The polyvinyl alcohol aldehyde acetal group solid lubricant disclosed by the invention can effectively reduce friction abrasion among friction pairs of wheel tracks, building machinery and mining machinery, reduce noise and improve work safety; furthermore, the preparation method disclosed by the invention has the advantages of simpleness, convenience in use and suitability for being popularized and applied.