Polythioether polymers, sealants containing polythioether polymers, and compounds useful as stabilizing monomers in the manufacture of polythioether polymers are provided. In many embodiments the polymers and sealants demonstrate reduced risk of spoilage that may be caused by low temperature storage of the polymer or uncured sealant. Compounds useful as stabilizing monomers include compounds according to formula I:

CH.sub.2CR.sup.1CHR.sup.2SR.sup.3SCHR.sup.4CR.sup.5CH.sub.2[I]

wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are independently selected from H, CH.sub.3 or C.sub.2H.sub.5, and wherein R.sup.3 is selected from divalent groups comprising 2-12 carbon atoms, 0-5 ether oxygen atoms and 0-5 thioether sulfur atoms, which may be straight, branched or cyclic.

Polythioether polymers, sealants containing polythioether polymers, and compounds useful as stabilizing monomers in the manufacture of polythioether polymers are provided. In many embodiments the polymers and sealants demonstrate reduced risk of spoilage that may be caused by low temperature storage of the polymer or uncured sealant. Compounds useful as stabilizing monomers include compounds according to formula I:

CH.sub.2CR.sup.1CHR.sup.2SR.sup.3SCHR.sup.4CR.sup.5CH.sub.2[I]

wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are independently selected from H, CH.sub.3 or C.sub.2H.sub.5, and wherein R.sup.3 is selected from divalent groups comprising 2-12 carbon atoms, 0-5 ether oxygen atoms and 0-5 thioether sulfur atoms, which may be straight, branched or cyclic.

The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: reacting a sulfoxide represented by the following formula (1) with a particular aromatic compound to obtain a poly(arylenesulfonium salt) having a particular constitutional unit; and dealkylating or dearylating the poly(arylenesulfonium salt) to obtain a polyarylene sulfide resin having a particular constitutional unit, ##STR00001## wherein R.sup.1 represents an alkyl group having 1 to 10 carbon atoms, etc.; Ar.sup.1 and Ar.sup.2 each independently represent an arylene group optionally having a substituent; and Z represents a direct bond, etc.

The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: reacting a sulfoxide represented by the following formula (1) with a particular aromatic compound to obtain a poly(arylenesulfonium salt) having a particular constitutional unit; and dealkylating or dearylating the poly(arylenesulfonium salt) to obtain a polyarylene sulfide resin having a particular constitutional unit, ##STR00001## wherein R.sup.1 represents an alkyl group having 1 to 10 carbon atoms, etc.; Ar.sup.1 and Ar.sup.2 each independently represent an arylene group optionally having a substituent; and Z represents a direct bond, etc.

Sulfur-containing polymeric particles having a high sulfur content can be prepared using emulsion polymerization. The sulfur-containing polymeric particles are useful in aerospace coatings and sealants.

Sulfur-containing polymeric particles having a high sulfur content can be prepared using emulsion polymerization. The sulfur-containing polymeric particles are useful in aerospace coatings and sealants.

Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.

Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.

Degradable polycarbonates network based bulk materials are provided. The bulk materials of the present disclosure may be produced having a wide range of tunable mechanical, physical, and thermal properties and are hydrolytically degradable. The bulk materials of the present disclosure may be suitable for the manufacture of a variety of sport fishing equipment or other equipment for water use or that may benefit from hydrolytic degradation in the environment.

Degradable polycarbonates network based bulk materials are provided. The bulk materials of the present disclosure may be produced having a wide range of tunable mechanical, physical, and thermal properties and are hydrolytically degradable. The bulk materials of the present disclosure may be suitable for the manufacture of a variety of sport fishing equipment or other equipment for water use or that may benefit from hydrolytic degradation in the environment.