57 results about "Thiolactone" patented technology

The invention relates to a preparation method of a self-cleaning anti-icing coating based on brush-shaped organic silicon. The preparation method comprises the following steps of: carrying out simplemulti-component click reaction on thiolactone, a diamine compound and monovinyl-terminated polydimethylsiloxane to prepare a dihydroxyl-terminated block, and introducing the dihydroxyl-terminated block into a polyurethane matrix to obtain a brush-shaped organic silicon modified polyurethane coating. The coating with the special structure has the characteristics of low surface energy of organic silicon and strong adhesion between the polyurethane coating and a substrate, and the special brush-shaped structure endows the coating with a special liquid-like surface structure, so that the coating has excellent self-cleaning and anti-fouling properties. The highest tensile strength of the coating can reach 48.62 MPa, the elongation at break of the coating is 1233%, the static water contact angleof the coating is 95 degrees or above, and the minimum ice adhesion force of the surface of the coating can reach 15.4 kPa.

A method for preparing a functionalized polymer, the method comprising the steps, of: (i) polymerizing monomers to form a reactive polymer, and (ii) reacting the reactive polymer with a lactone or thiolactone that contains a protected amino group.

The invention relates to a preparation method and application of a lithium battery binder with self-repairing performance. The method comprises the following steps: adding component A containing dithiolactone functional group and component B containing amino functional group into a solvent, and reacting at 50-100° C. for 12 hours to obtain a lithium battery polymer with self-repairing performance material binder; the component A of the sulfur-containing lactone functional group is N,N'-oxalylthiolactone, N,N'-malonylthiolactone, N,N'-succinylthiolactone lactone, N,N'-glutaryl thiolactone, N,N'-adipyl thiolactone or N,N'-sebacoyl thiolactone; the amino functional group-containing component B is Polyethyleneimine, chitosan, aminocellulose or polylysine. The polymer binder of the present invention can make the positive electrode of the lithium battery have the characteristic of self-repairing, thereby greatly improving the powdering problem of the electrode material, and is beneficial to improving the discharge specific capacity and cycle stability of the lithium battery.

Tin-containing catalysts are provided comprising a compound of formula I.I:L1, L2, L3, and L4 are each independently selected from —O—, —S—, —OC(═O)—, —OC(═S)—, —SC(═O)—, —SC(═S)—, —OS(═O)2O—, —OS(═O)2——N(R6)-, and —OP(═O)(R6)-, wherein R6 represents hydrogen or a monovalent aliphatic, araliphatic, cycloaliphatic or aromatic group having up to 20 carbon atoms. R1, R2, R3, R1′, R2′, and R3′ each independently represent a divalent aliphatic, araliphatic, cycloaliphatic or aromatic group having up to 20 carbon atoms; and R4, R5, R4′, and R5′ each independently represent hydrogen or a monovalent residue derived from reaction of a respective N—H group with an isocyanate, an ethylenically unsaturated compound, a lactone, a dilactone, a thiolactone, a lactam, a thiolactam, a carboxylic acid or derivative thereof, or an epoxide. Also provided are curable compositions containing these catalysts and methods of controlling the rate of cure of curable compositions.

The present invention relates to a process for the preparation of enantiomerically pure homocysteine-³-thiolactone comprising optical resolution of racemic homocysteine-³-thiolactone ( I ) with a chiral organic acid wherein one isomer is recovered as diastereomeric salt with the organic acid and the other isomer remaining in the mother liquor is submitted to racemisation with a catalytic amount of an aromatic aldehyde and submitted again to optical resolution with the same chiral organic acid.