A method for preparing a synthetic rubber, including a step of graft-polymerizing a main polymer with a methyl-methacrylate monomer in the presence of a peroxide initiator of formula (I): R.sub.1—O—O—R.sub.2, wherein each of R.sub.1 and R.sub.2 is independently an alkyl group or an alkanoyl group including from 1 to 30 carbon atoms.

A method for preparing a synthetic rubber, including a step of graft-polymerizing a main polymer with a methyl-methacrylate monomer in the presence of a peroxide initiator of formula (I): R.sub.1—O—O—R.sub.2, wherein each of R.sub.1 and R.sub.2 is independently an alkyl group or an alkanoyl group including from 1 to 30 carbon atoms.

Provided is a surface treatment agent which does not use fluorine-containing monomers, particularly fluoroalkyl group-containing monomers. Additionally, provided is a copolymer which includes a first polymer formed from first monomers, and a second polymer formed from second monomers. The copolymer does not include fluorine. The second polymer is polymerized in the presence of the first polymer. The first monomers include a long-chain acrylate ester monomer (a) represented by the formula CH.sub.2=CA.sup.11-C(═O)—O-A.sup.12 (in the formula, A.sup.11 represents hydrogen, a monovalent organic group, or a halogen, and A.sup.12 represents a C.sub.18-30 straight-chain or branched hydrocarbon group). The first monomers and the second monomers both include a halogenated olefin monomer (b).

Provided is a surface treatment agent which does not use fluorine-containing monomers, particularly fluoroalkyl group-containing monomers. Additionally, provided is a copolymer which includes a first polymer formed from first monomers, and a second polymer formed from second monomers. The copolymer does not include fluorine. The second polymer is polymerized in the presence of the first polymer. The first monomers include a long-chain acrylate ester monomer (a) represented by the formula CH.sub.2=CA.sup.11-C(O)O-A.sup.12 (in the formula, A.sup.11 represents hydrogen, a monovalent organic group, or a halogen, and A.sup.12 represents a C.sub.18-30 straight-chain or branched hydrocarbon group). The first monomers and the second monomers both include a halogenated olefin monomer (b).

A photocurable inkjet printing ink composition contains (A) to (C) below: (A) a chlorinated polyolefin; (B) monofunctional monomer 1 with a glass transition temperature (Tg) of 0 C. or below; and (C) monofunctional monomer 2 with a glass transition temperature (Tg) of 60 C. or above; wherein the content of (A) in the ink composition is 0.2 percent by mass or higher; the total content of (B) and (C) in the ink composition is 40 percent by mass or higher; and the mass-based ratio of the content of (C) and that of (B), or (C)/(B), is 0.80 to 3.00. The composition makes inkjet printing possible on the surfaces of molded products of polyolefins.

A photocurable inkjet printing ink composition contains (A) to (C) below: (A) a chlorinated polyolefin; (B) monofunctional monomer 1 with a glass transition temperature (Tg) of 0 C. or below; and (C) monofunctional monomer 2 with a glass transition temperature (Tg) of 60 C. or above; wherein the content of (A) in the ink composition is 0.2 percent by mass or higher; the total content of (B) and (C) in the ink composition is 40 percent by mass or higher; and the mass-based ratio of the content of (C) and that of (B), or (C)/(B), is 0.80 to 3.00. The composition makes inkjet printing possible on the surfaces of molded products of polyolefins.

The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R.sub.1, R.sub.2, and R.sub.3 each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R.sub.4 represents COOM; R.sub.5 represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10.

##STR00001##

The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R.sub.1, R.sub.2, and R.sub.3 each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R.sub.4 represents COOM; R.sub.5 represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10.

##STR00001##

The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R.sub.1, R.sub.2, and R.sub.3 each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R.sub.4 represents COOM; R.sub.5 represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10. ##STR00001##

The present application relates to a binder compound of formula (I), a method for preparing the same, and an electrode sheet comprising the same. In formula (I), R.sub.1, R.sub.2, and R.sub.3 each independently represents an unsubstituted or substituted linear or branched alkyl with 1-6 carbon atoms, or an unsubstituted or substituted aryl with 6-20 carbon atoms; R.sub.4 represents COOM; R.sub.5 represents a bridging oxo or bridging imino; each M independently represents one of Li, Na, K, Rb, and Cs; Z represents a linear or branched alkylene with 1-6 carbon atoms; m is an integer selected from 7,600 to 47,000; n is an integer selected from 1,520 to 94,000; and m/n=0.1-10. ##STR00001##