The present disclosure provides a sensitizer for UV-LED photocuring, having a chemical structure as represented by formula (I). This sensitizer has a very good adaptability to existing photoinitiators, can significantly improve the curing efficiency under the irradiation of a UV-LED light source when used in a photocurable composition, and has excellent application properties. ##STR00001##

The present disclosure provides a sensitizer for UV-LED photocuring, having a chemical structure as represented by formula (I). This sensitizer has a very good adaptability to existing photoinitiators, can significantly improve the curing efficiency under the irradiation of a UV-LED light source when used in a photocurable composition, and has excellent application properties. ##STR00001##

Method for the production of cannabinoid acid esters of general formula I or II or III or IV, wherein R1 consists of a straight or branched alkyl group, alkenyl group or alkynyl group having from 1 to 5 carbons, during the simultaneous extraction of cannabinoid acids derived from the plant Cannabis sp., preferably Cannabis sativa. The invention also refers to esters of cannabinoid acids with general formula I or II or III or IV obtained by this particular method, and pharmaceutical compositions containing said esters of cannabinoid acids for use in medical treatment.

Method for the production of cannabinoid acid esters of general formula I or II or III or IV, wherein R1 consists of a straight or branched alkyl group, alkenyl group or alkynyl group having from 1 to 5 carbons, during the simultaneous extraction of cannabinoid acids derived from the plant Cannabis sp., preferably Cannabis sativa. The invention also refers to esters of cannabinoid acids with general formula I or II or III or IV obtained by this particular method, and pharmaceutical compositions containing said esters of cannabinoid acids for use in medical treatment.

A process for manufacturing isocyanates or polycarbonates comprising the steps of: providing a chlorine stream and carbon monoxide stream; reacting said chlorine stream and said carbon monoxide stream for providing a phosgene stream; cooling the phosgene stream to a temperature at which the phosgene in the phosgene stream is liquid, preferably, to a temperature that is 4 C. less or more than 4 C. less than the boiling point of phosgene, to form a liquid phosgene stream and a gas stream; separating the gas stream and the liquid phosgene stream; removing residual chlorine from the liquid phosgene stream to form a chlorine depleted phosgene stream and reacting the chlorine depleted phosgene stream to form an isocyanate or a polycarbonate.

A process for manufacturing isocyanates or polycarbonates comprising the steps of: providing a chlorine stream and carbon monoxide stream; reacting said chlorine stream and said carbon monoxide stream for providing a phosgene stream; cooling the phosgene stream to a temperature at which the phosgene in the phosgene stream is liquid, preferably, to a temperature that is 4 C. less or more than 4 C. less than the boiling point of phosgene, to form a liquid phosgene stream and a gas stream; separating the gas stream and the liquid phosgene stream; removing residual chlorine from the liquid phosgene stream to form a chlorine depleted phosgene stream and reacting the chlorine depleted phosgene stream to form an isocyanate or a polycarbonate.

The present technology relates to synthesis of compositions comprising salicylates, polysalicylates and other derivatives of salicylic acid, and personal care and pharmaceutical compositions comprising the same.

The present technology relates to synthesis of compositions comprising salicylates, polysalicylates and other derivatives of salicylic acid, and personal care and pharmaceutical compositions comprising the same.

Provided are: a polymerizable liquid crystal composition for obtaining a retardation film that has high front contrast; and a liquid crystal polymer. A polymerizable liquid crystal composition which is characterized by containing a compound represented by formula (1).

##STR00001##

Exemplified are embodiments wherein in formula (1), W.sup.1 represents an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, an alkoxycarbonyl group having 1-5 carbon atoms or an alkanoyl group having 1-5 carbon atoms; Z.sup.1 represents CH.sub.2CH.sub.2COO; Z.sup.2 represents OCOCH.sub.2CH.sub.2; each of Y.sup.1 and Y.sup.2 represents a linking group; each of Q.sup.1 and Q.sup.2 represents a spacer; and each of P.sup.1 and P.sup.2 represents a polymerizable functional group.

The present specification relates to a compound of Chemical Formula 1, a method for preparing the same, and a single molecule and a polymer derived from the compound.