A composition [composition (C)] comprising from 1 to 90% by weight (wt. %) of at least one poly(aryl ether ketone) [(PAEK) polymer], from 1 to 25 wt. % of at least one polyphenylsulfone polymer [(PPSU) polymer], from 1 to 90 wt. % of at least one polyethersulfone polymer [(PES)polymer], and from 0.1 to 50 wt. % of at least one reinforcing filler, where all wt. % are based on the total weight of the composition (C) and the (PES) polymer has as melt flow rate(MFR) at a temperature of 380° C. and under a load of 2.16 kg according to ASTM D1238 of greater than 35 g/10 min.

The present disclosure discloses a thiocarbonyl-based poly(O-thiocarbamate) compound and a preparation method and use thereof, belonging to the technical field of polymer chemistry and material science. The present disclosure provides a new thiocarbonyl-based poly(O-thiocarbamate)compound with a structure represented by Formula I, which has sulfur element introduced, and has good solubility and high molecular weight. The thiocarbonyl-based poly(O-thiocarbamate) compound provided has good thermal stability and a very high refractive index, and is expected to have desirable applications in the optical field.

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The present disclosure discloses a thiocarbonyl-based poly(O-thiocarbamate) compound and a preparation method and use thereof, belonging to the technical field of polymer chemistry and material science. The present disclosure provides a new thiocarbonyl-based poly(O-thiocarbamate)compound with a structure represented by Formula I, which has sulfur element introduced, and has good solubility and high molecular weight. The thiocarbonyl-based poly(O-thiocarbamate) compound provided has good thermal stability and a very high refractive index, and is expected to have desirable applications in the optical field.

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According to an embodiment, the pH of a diisocyanate composition and a diamine hydrochloride composition used in the preparation of an optical lens is adjusted to a specific range, whereby it is possible to enhance not only the yield and purity of the diisocyanate composition but also the optical characteristics of the final optical lens by suppressing the striae and cloudiness. Specifically, according to the process of the embodiment, the amount of an aqueous hydrochloric acid solution introduced to the reaction may be adjusted to control the pH of the diisocyanate composition to a desired range, thereby enhancing the yield and purity. Accordingly, the process for preparing a diisocyanate composition according to the embodiment can be applied to the preparation of a plastic optical lens of high quality.

A lacquer composition is provided, comprising 20%-79.9% by weight, based on the total weight of the composition, of a thiol compound having two or more thiol groups, 20%-79.9% by weight, based on the total weight of the composition, of a compound having two or more carbon-carbon double bonds and 0.1%-10% by weight, based on the total weight of the composition, of a separating agent having an alkyl radical having 4-20 carbon atoms, where the alkyl radical is unsubstituted or fluorine-substituted and the alkyl radical is bonded to a functional group. Also provided are the use of this lacquer composition as a protective lacquer on an optical surface of an optical element in the production of the optical element, and an optical element comprising the protective lacquer.

A lacquer composition is provided, comprising 20%-79.9% by weight, based on the total weight of the composition, of a thiol compound having two or more thiol groups, 20%-79.9% by weight, based on the total weight of the composition, of a compound having two or more carbon-carbon double bonds and 0.1%-10% by weight, based on the total weight of the composition, of a separating agent having an alkyl radical having 4-20 carbon atoms, where the alkyl radical is unsubstituted or fluorine-substituted and the alkyl radical is bonded to a functional group. Also provided are the use of this lacquer composition as a protective lacquer on an optical surface of an optical element in the production of the optical element, and an optical element comprising the protective lacquer.

A sulfur reaction product formed by reacting elemental sulfur with an amine or epoxy compound containing reactive functionality. Such reaction product can be incorporated into a thermosettable resin composition as a modifier. When the thermosettable composition containing such sulfur reaction product is cured, the resulting crosslinked thermoset displays improved stress relaxation characteristics in line with vitrimer like behaviors.

A polythioether prepolymer including functional groups capable of being obtained by the reaction: of at least one compound T having a number f of thiol functional group number selected from 2, 3, 4 and 6, with at least one compound E having a number g of epoxy functional groups number selected from 2 and 3. Also, a method of preparation for this prepolymer, a composition including this prepolymer and an oligomer as well as its use as a mastic and a polythioether polymer obtained from this polythioether prepolymer with an oligomer.

A semicrystalline polyphenylsulfone, has the structure Formula (I) wherein n and R are defined herein. The semicrystalline polyphenylsulfone, which exhibits a crystalline melting point in a range of 215 to 270° C., can be prepared from amorphous polyphenylsulfone using a solvent-induced crystallization method. An additive manufacturing method utilizing particles of the semicrystalline polyphenylsulfone is described. ##STR00001##

A two-part curable composition comprises: a Part A component comprising polythiol having a thiol group functionality of at least two, and tertiary amine accelerator; and a Part B component comprising polyene comprising at least two of non-aromatic C—C double bonds, C—C triple bonds, or a combination thereof and organic peroxide curative. At least one of the polythiol or the polyene comprises a respective reaction product of reaction components comprising: HSR.sup.1O(CH.sub.2CHR.sup.2O).sub.aR.sup.1SH wherein each R.sup.1 independently represents an alkyl group having from 2 to 12 carbon atoms, each R.sup.2 independently represents H or CH.sub.3, and a represents an integer from 1 to 20; triallyl isocyanurate; H.sub.2═CHOR.sup.1O(CH.sub.2CHR.sup.2O).sub.aR.sup.1OCH═CH.sub.2; and. A method of making a curable composition comprises combining the Part A and Part B components of the two-part curable composition. Methods of sealing a substrate and adhering two substrates, and articles made thereby are also disclosed. (Formula AA)

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