A method of preparing a thermoplastic composition is provided. The method includes the following steps. A polyetherimide or a polyphenylene sulfide is provided. A polyimide is provided, wherein the glass transition temperature of the polyimide is between 128 C. and 169 C., the 10% thermogravimetric loss temperature of the polyimide is between 490 C. and 534 C., and when the polyimide is dissolved in N-methyl-2-pyrrolidone and the solid content of the polyimide is 30 wt %, the viscosity of the polyimide is between 100 cP and 250 cP. A melt process is performed to mix the polyetherimide and the polyimide or mix the polyphenylene sulfide and the polyimide to form a thermoplastic composition. Further, a thermoplastic composition is also provided.

Certain cyclopentadienone monomers having polar moieties are useful in forming polyarylene resins having improved solubility in certain organic solvents and are useful in forming polyarylene resin layers in electronics applications.

This invention relates to compositions and a process for stabilizing or solubilize a phenolic resin containing a mixture of linear phenolic resins and calixarenes. The process comprises contacting the phenolic resin with an epoxide, to at least partially alkoxylate the phenolic hydroxyl groups of the calixarenes. This process forms a stabilized or solubilized phenolic resin with an increased solubility in a hydrocarbon solvent.

An alkylphenol copolymer, such as for use in a petroleum composition, is provided. The alkylphenol copolymer has at least the following repeating unit (I):

##STR00001## wherein: A is a direct bond or an alkylene; X is C(O)O, OC(O), C(O)N(R.sub.6), N(R.sub.6)C(O), C(O), N(R.sub.6), O, or S; R.sub.6 is H or an alkyl; R.sub.1 includes a C.sub.1-C.sub.80 alkyl, a C.sub.2-C.sub.20 alkenyl, a C.sub.2-C.sub.20 alkynyl, a C.sub.3-C.sub.12 aryl, or a polyether; and n is an integer from 1 to 200.

The present invention also provides a method for forming the alkylphenol copolymer containing the aforementioned repeating unit (I) as well as a method for forming a monomer for forming repeating unit (I).

An alkylphenol copolymer, such as for use in a petroleum composition, is provided. The alkylphenol copolymer has at least the following repeating unit (I):

##STR00001## wherein: A is a direct bond or an alkylene; X is C(O)O, OC(O), C(O)N(R.sub.6), N(R.sub.6)C(O), C(O), N(R.sub.6), O, or S; R.sub.6 is H or an alkyl; R.sub.1 includes a C.sub.1-C.sub.80 alkyl, a C.sub.2-C.sub.20 alkenyl, a C.sub.2-C.sub.20 alkynyl, a C.sub.3-C.sub.12 aryl, or a polyether; and n is an integer from 1 to 200.

The present invention also provides a method for forming the alkylphenol copolymer containing the aforementioned repeating unit (I) as well as a method for forming a monomer for forming repeating unit (I).

A high-modulus rubber composition is based on at least a diene elastomer, a reinforcing filler, from 1 to 45 phr of reinforcing resin, from 1 to 10 phr of sulfur, and from 2 to 15 phr of vulcanization accelerator, in which the ratio of the content of sulfur to the content of vulcanization accelerator is less than 0.55.

A high-modulus rubber composition is based on at least a diene elastomer, a reinforcing filler, from 1 to 45 phr of reinforcing resin, from 1 to 10 phr of sulfur, and from 2 to 15 phr of vulcanization accelerator, in which the ratio of the content of sulfur to the content of vulcanization accelerator is less than 0.55.

The present invention relates to an electrolyte for a lithium secondary battery, comprising an organic solvent, a lithium salt and a compound of Chemical Formula 1, wherein the compound of Chemical Formula 1 is contained in an amount of 0.001 wt % or more and less than 0.1 wt %.

##STR00001##

In Chemical Formula 1, n is one of the integers 3 to 10.

The present invention relates to an electrolyte for a lithium secondary battery, comprising an organic solvent, a lithium salt and a compound of Chemical Formula 1, wherein the compound of Chemical Formula 1 is contained in an amount of 0.001 wt % or more and less than 0.1 wt %.

##STR00001##

In Chemical Formula 1, n is one of the integers 3 to 10.

A tackifier comprising a resin with repeating units of formula (I) wherein R.sup.1 is a linear or branched alkylen group with 1 to 10 carbon atoms and R.sup.2 is a linear or branched, saturated or unsaturated aliphatic hydrocarbon group with up to 20 carbon atoms and a non-aromatic compound which consists to at least 50% by weight of one or more linear or branched, saturated or unsaturated aliphatic hydrocarbon groups with at least 4 carbon atoms.

##STR00001##