A method for forming a polyarylene sulfide resin is provided. The method comprises reacting an arylene sulfide polymer containing halogen end groups with an end group-modifying compound to form the polyarylene sulfide resin, wherein the end group-modifying compound includes an organic salt of an aminoalkyl carboxylic acid.

The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: a step of reacting a poly(arylenesulfonium salt) having a constitutional unit represented by the following formula (1) with an aliphatic amide compound to obtain a polyarylene sulfide resin having a constitutional unit represented by the following formula (2):

##STR00001##

wherein R.sup.1 represents a direct bond, Ar.sup.2, Ar.sup.2S or Ar.sup.2O; Ar.sup.1 and Ar.sup.2 each represent an arylene group optionally having a functional group as a substituent; R.sup.2 represents an alkyl group having 1 to 10 carbon atoms or an aromatic group optionally having an alkyl group having 1 to 10 carbon atoms as a substituent; and X.sup. represents an anion,

##STR00002##

wherein R.sup.1 and Ar.sup.1 are the same as described above.

The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: a step of reacting a poly(arylenesulfonium salt) having a constitutional unit represented by the following formula (1) with an aliphatic amide compound to obtain a polyarylene sulfide resin having a constitutional unit represented by the following formula (2):

##STR00001##

wherein R.sup.1 represents a direct bond, Ar.sup.2, Ar.sup.2S or Ar.sup.2O; Ar.sup.1 and Ar.sup.2 each represent an arylene group optionally having a functional group as a substituent; R.sup.2 represents an alkyl group having 1 to 10 carbon atoms or an aromatic group optionally having an alkyl group having 1 to 10 carbon atoms as a substituent; and X.sup. represents an anion,

##STR00002##

wherein R.sup.1 and Ar.sup.1 are the same as described above.

A polymer is provided. The polymer has a repeating unit having a structure represented by Formula (I) or Formula (II)

##STR00001##

wherein Ar.sup.1 and Ar.sup.2 can be substituted or unsubstituted aryl diradical; Y.sup. can be R.sup.2SO.sub.3.sup. or ClO.sub.4.sup.; R.sup.1 can be C.sub.1-6 alkyl; Ar.sup.1 and Ar.sup.2 are different; and, R.sup.2 can be C.sub.1-6 alkyl, substituted or unsubstituted aromatic ring, or C.sub.1-6 haloalkyl.

A polymer is provided. The polymer has a repeating unit having a structure represented by Formula (I) or Formula (II)

##STR00001##

wherein Ar.sup.1 and Ar.sup.2 can be substituted or unsubstituted aryl diradical; Y.sup. can be R.sup.2SO.sub.3.sup. or ClO.sub.4.sup.; R.sup.1 can be C.sub.1-6 alkyl; Ar.sup.1 and Ar.sup.2 are different; and, R.sup.2 can be C.sub.1-6 alkyl, substituted or unsubstituted aromatic ring, or C.sub.1-6 haloalkyl.

The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: a step of reacting a poly(arylenesulfonium salt) having a constitutional unit represented by the following formula (1) with an aliphatic amide compound to obtain a polyarylene sulfide resin having a constitutional unit represented by the following formula (2): ##STR00001##
wherein R.sup.1 represents a direct bond, Ar.sup.2, Ar.sup.2S or Ar.sup.2O; Ar.sup.1 and Ar.sup.2 each represent an arylene group optionally having a functional group as a substituent; R.sup.2 represents an alkyl group having 1 to 10 carbon atoms or an aromatic group optionally having an alkyl group having 1 to 10 carbon atoms as a substituent; and X.sup. represents an anion, ##STR00002##
wherein R.sup.1 and Ar.sup.1 are the same as described above.

The present invention relates to a method for manufacturing a polyarylene sulfide resin comprising: a step of reacting a poly(arylenesulfonium salt) having a constitutional unit represented by the following formula (1) with an aliphatic amide compound to obtain a polyarylene sulfide resin having a constitutional unit represented by the following formula (2): ##STR00001##
wherein R.sup.1 represents a direct bond, Ar.sup.2, Ar.sup.2S or Ar.sup.2O; Ar.sup.1 and Ar.sup.2 each represent an arylene group optionally having a functional group as a substituent; R.sup.2 represents an alkyl group having 1 to 10 carbon atoms or an aromatic group optionally having an alkyl group having 1 to 10 carbon atoms as a substituent; and X.sup. represents an anion, ##STR00002##
wherein R.sup.1 and Ar.sup.1 are the same as described above.

A foam and a foaming composition are provided. The foam includes a composite material and a plurality of foam cells, wherein the foam cells are disposed in the composite material. The composite material includes a modified sulfur-containing polymer and a fluorine-containing polymer fiber, wherein a degree of orientation as defined by the ratio I.sub.110/I.sub.200 is from 1.0 to 1.3, wherein I.sub.110 is the X-ray diffraction peak intensity of (110) planes of the modified sulfur-containing polymer and I.sub.200 is the X-ray diffraction peak intensity of (200) planes of the modified sulfur-containing polymer.

A foam and a foaming composition are provided. The foam includes a composite material and a plurality of foam cells, wherein the foam cells are disposed in the composite material. The composite material includes a modified sulfur-containing polymer and a fluorine-containing polymer fiber, wherein a degree of orientation as defined by the ratio I.sub.110/I.sub.200 is from 1.0 to 1.3, wherein I.sub.110 is the X-ray diffraction peak intensity of (110) planes of the modified sulfur-containing polymer and I.sub.200 is the X-ray diffraction peak intensity of (200) planes of the modified sulfur-containing polymer.

The present disclosure discloses a method for preparing high-activity polyphenylene sulfide (PPS) by regulating and controlling a water content in a polymerization process and a high-efficiency polyphenylene sulfide resin prepared thereby. The preparation method includes: carrying out a polycondensation reaction with sodium hydrosulfide and p-dichlorobenzene as raw materials and N-methyl-2-pyrrolidone as a solvent until a conversion rate of the p-dichlorobenzene reaches 97% or above, adding deionized water, reducing the temperature in a reactor to 250-260 C. for heat preservation for 1-3 h, and performing cooling for post-treatment; and calculated with the sodium hydrosulfide as 1.0 mol, a molar amount of the added deionized water is 1.0-2.5 mol. The method for preparing high-activity polyphenylene sulfide disclosed in the present disclosure can be simultaneously realized in a PPS polymerization process, and that is to say, an end-capping reagent is not required to be additionally added to affect the molecular weight and thermal stability of the finally prepared PPS; and activation treatment is also not required to be performed after the PPS resin is prepared to additionally increase the technological process and the production cost.