Provided are methods of producing sulfur- and phosphorus-containing polymers from beta-lactones. The sulfur- and phosphorus-containing polymers include bio-based sulfur- and phosphorus-containing polymers that may be obtained from renewable sources.

[Problem] To provide an active energy ray-curable composition which provides a cured product having excellent transparency as well as superior shock absorption and vibration absorption, and a cured product, a shock-absorbing material, a vibration-absorbing material and a sheet material in which said active energy ray-curable composition is used.

[Solution] An active energy ray-curable composition containing (A) diallyl 1,4-cyclohexane dicarboxylate, (B) a compound having two or more mercapto groups, and (C) a polymerization initiator.

Compounds include boronate ester polythioaminals with substituents that include hydrogen, fluorine or substituted or unsubstituted alkyls. The boronate ester polythioaminals have number average molecular weight or weight average molecular weight between about 2,000 to about 160,000.

Compounds include boronate ester polythioaminals with substituents that include hydrogen, fluorine or substituted or unsubstituted alkyls. The boronate ester polythioaminals have number average molecular weight or weight average molecular weight between about 2,000 to about 160,000.

A method comprising (a) applying a composition to a substrate as a substantially continuous coating on the substrate, (b) curing the coating, wherein the composition comprises: (i) a polyene, (ii) a polythiol, (iii) 0.001 to 20 percent by weight of an anhydride, and (iv) up to 80 percent by weight of a pigment, particularly wherein the mole ratio of (ii) to (i) being from 0.1 to 10/1; the percentage by weight of (iii) being based on weight of resin solids in the composition and the percentage by weight of (iv) being based on solids weight of the composition.

The present invention provides a polythiol composition containing, as the main component, a polythiol compound (a) having two or more mercapto groups, and containing 0.5% by mass or less of a nitrogen-containing compound (b) in which at least one mercapto group in the polythiol compound (a) is substituted with a group represented by formula (1).

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The present invention provides a polythiol composition containing, as the main component, a polythiol compound (a) having two or more mercapto groups, and containing 0.5% by mass or less of a nitrogen-containing compound (b) in which at least one mercapto group in the polythiol compound (a) is substituted with a group represented by formula (1).

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A preparation method of a polyarylene sulfide that may produce a polyarylene sulfide having properties equal to or higher than those of the conventional method with a high molecular weight at a high yield by optimizing the content and molar ratio of an amide-based compound in a polymerization step.

Sulfur containing, hydroxyl-telechelic PIBs, hydrolytically and oxidatively resistant, biocompatible and biostable polyurethanes (PUs) made therefrom, and methods for making both are disclosed. Well-defined hydroxyl telechelic PIBs are synthesized by a thiol-ene click photochemical reaction between PIBs carrying unsaturated end groups and 2-mercaptoethanol (HS—CH.sub.2CH.sub.2—OH). This regioselective process affords HO—CH.sub.2CH.sub.2—S-PIB-S—CH.sub.2CH.sub.2—OH (abbreviated herein as HO—S-PIB-S—OH) in high yield. In some embodiments, these HO—S-PIB-S—OH polymers may be reacted with diisocyanates and a chain extender to form sulfur containing PIB-based PUs. These sulfur containing PIB-based PUs have been found to have properties and chemical stability that are very similar to that of PUs made from di-hydroxyl terminated PIBs (OH-PIB-OHs) without sulfur, but have surprisingly increased creep resistance and are easier and less expensive to make.

Process for the production of a liquid mercapto-terminated polythioethersulfide comprising the step of reacting, at a temperature in the range 0-100° C. and in the presence of a catalyst: at least one compound selected from the group consisting of (i) dimercapto-dioxa-alkanes (DMDAs) and (ii) glycol di(mercapto carboxylic acid ester)s (GDMEs), at least one dimercapto-dialkyl sulfide (DMDS) at least one di-epoxide, and optionally at least one branching agent selected from compounds having at least three terminal groups selected from epoxy and mercapto groups,
wherein the molar ratio (DMDA+GDME)/DMDS is in the range 1.1-4.0.