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.

The present disclosure provides a sulfide-based polymer, a film comprising the same, and a method for preparing the same.

The present disclosure provides a sulfide-based polymer, a film comprising the same, and a method for preparing the same.

A polyphenylene sulfide resin composition includes (a) a polyphenylene sulfide resin and (b) a silicone-based polymer; the content of the component (b) is not less than 3 parts by weight and not more than 40 parts by weight with respect to 100 parts by weight of the component (a); in terms of morphology (phase structure), the polyphenylene sulfide resin composition has a phase-separated structure wherein the component (a) forms a continuous phase and the component (b) forms a dispersed phase in which the component (b) is dispersed with a number average dispersion diameter of not more than 3.0 ?m; a test specimen obtained by injection molding of the polyphenylene sulfide resin composition at a cylinder temperature of 310? C. and a mold temperature of 145? C. has a flexural modulus of not more than 3.0 GPa as determined by a flexural test according to ISO 178.

A method for preparing a cationic sulfoxide intermediate having the following formula ##STR00001##
wherein Ar.sub.1 and Ar.sub.2 are substituted or unsubstituted aryl groups that are the same or different, includes reacting hydrogen peroxide with (i) a compound having the following formula (2) or sulfonic acid RSO.sub.3H, wherein R is CH.sub.3, CF.sub.3, phenyl, toluene, or OH, and (ii) a cationic thioether intermediate having the following formula (4) to obtain the cationic sulfoxide intermediate: ##STR00002##
wherein R is a substituted or unsubstituted C.sub.1-C.sub.6 alkyl group; and ##STR00003##
wherein Ar.sub.1 and Ar.sub.2 are as defined above and Y is an anion.

A method for preparing a cationic sulfoxide intermediate having the following formula ##STR00001##
wherein Ar.sub.1 and Ar.sub.2 are substituted or unsubstituted aryl groups that are the same or different, includes reacting hydrogen peroxide with (i) a compound having the following formula (2) or sulfonic acid RSO.sub.3H, wherein R is CH.sub.3, CF.sub.3, phenyl, toluene, or OH, and (ii) a cationic thioether intermediate having the following formula (4) to obtain the cationic sulfoxide intermediate: ##STR00002##
wherein R is a substituted or unsubstituted C.sub.1-C.sub.6 alkyl group; and ##STR00003##
wherein Ar.sub.1 and Ar.sub.2 are as defined above and Y is an anion.

The present invention relates to a compound having a bis phenylene group substituted with alkylamide, a composition comprising the same for the control of polyphenylene polymer flowability and a method for controlling polyphenylene polymer flowability using the same. The said compound can improve the flowability of polyphenylene polymer so that it can be used for processing polyphenylene polymer to improve the flowability, thereby providing economic benefits by diversifying PPS parts and improving workability. In addition, the said compound can control and improve the flowability by regulating the length of phenyl-conjugated alkyl, so that it can be effectively used as a flowability regulator of polyphenylene polymer particularly polyphenylene sulfide.

The present invention relates to a compound having a bis phenylene group substituted with alkylamide, a composition comprising the same for the control of polyphenylene polymer flowability and a method for controlling polyphenylene polymer flowability using the same. The said compound can improve the flowability of polyphenylene polymer so that it can be used for processing polyphenylene polymer to improve the flowability, thereby providing economic benefits by diversifying PPS parts and improving workability. In addition, the said compound can control and improve the flowability by regulating the length of phenyl-conjugated alkyl, so that it can be effectively used as a flowability regulator of polyphenylene polymer particularly polyphenylene sulfide.

A method for forming a polyarylene sulfide is described. The method can include a multi-step cooling and precipitation process in which the cooling rate of the solution that carries the polymer is decreased during a portion of the overall cooling. This slower cooling period can encompass at least a portion of the period during which the polymer precipitates from the solution. The precipitation process can form polyarylene sulfide particles with good particle integrity and a narrow particle size distribution, which can reduce fines and improve downstream processing and final product characteristics.

A method for forming a polyarylene sulfide is described. The method can include a multi-step cooling and precipitation process in which the cooling rate of the solution that carries the polymer is decreased during a portion of the overall cooling. This slower cooling period can encompass at least a portion of the period during which the polymer precipitates from the solution. The precipitation process can form polyarylene sulfide particles with good particle integrity and a narrow particle size distribution, which can reduce fines and improve downstream processing and final product characteristics.