New polyvinylamide and/or acryl acid-based copolymers. The new structured block copolymers are based on the block copolymerization of N-vinyl formamide (NVF) with other monomers by using a bifunctional initiator. Further, a method of preparing the structured block copolymer is provided, and especially a method wherein the NVF-based block is at least partially hydrolyzed to obtain PVAm. Also the use of the new structured block copolymers in sludge dewatering and in papermaking processes is disclosed.

New polyvinylamide and/or acryl acid-based copolymers. The new structured block copolymers are based on the block copolymerization of N-vinyl formamide (NVF) with other monomers by using a bifunctional initiator. Further, a method of preparing the structured block copolymer is provided, and especially a method wherein the NVF-based block is at least partially hydrolyzed to obtain PVAm. Also the use of the new structured block copolymers in sludge dewatering and in papermaking processes is disclosed.

There is provided a binder composition for a secondary battery, containing an organic solvent and a polymer binder dissolved in the organic solvent, in which the binder composition for a secondary battery contains 3 to 1.010.sup.5 ppm of a low-boiling point organic solvent (A) having a boiling point of lower than 120 C. in the binder composition. There are also provided a composition for a non-aqueous secondary battery, which contains the binder composition for a secondary battery as well as a sheet for an all-solid state secondary battery and an all-solid state secondary battery, which use the composition for a non-aqueous secondary battery, and manufacturing methods of these.

There is provided a binder composition for a secondary battery, containing an organic solvent and a polymer binder dissolved in the organic solvent, in which the binder composition for a secondary battery contains 3 to 1.010.sup.5 ppm of a low-boiling point organic solvent (A) having a boiling point of lower than 120 C. in the binder composition. There are also provided a composition for a non-aqueous secondary battery, which contains the binder composition for a secondary battery as well as a sheet for an all-solid state secondary battery and an all-solid state secondary battery, which use the composition for a non-aqueous secondary battery, and manufacturing methods of these.

Materials having structure (1), wherein R and R.sup.1 may be the same or different and each independently represents an alkyl or aryl group, X may be hydrogen or a C.sub.1 to C.sub.20 alkyl group which may be branched or linear and wherein the aromatic ring substituent joined to polymer B is positioned meta or para to the aromatic ring substituent joined to polymer A and, wherein polymer A is a non-polar polymer formed by metallocene catalysis and polymer B is a polymer formed by radical catalysis of a polar monomer are used as polymer additives particularly to improve the compatibility of mixtures of polymers.

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The present invention relates to an organic zinc compound comprising a styrene-based polymer or a polyolefin-polystyrene block copolymer at both ends. Also, the present invention relates to a method for preparing the organic zinc compound, the method preparing an intermediate by coordination-polymerizing an olefin monomer using a transition metal catalyst, and then performing anionic polymerization by inserting an alkyllithium compound, an amine ligand, and a styrene-based monomer into the intermediate. Accordingly, the present invention can provide a method for preparing a commercially useful styrene-based polymer or polyolefin-polystyrene block copolymer directly from an olefin monomer and a styrene monomer in a one-pot manner.

Concentrates containing specific functionalized diblock copolymers serve as effective additives for improving the cold flow behavior of fuels and oils, the copolymers being derived from a terminally-unsaturated intermediate polymer obtained via a metallocene process involving hydrogen.

Concentrates containing specific functionalised diblock copolymers serve as effective additives for improving the cold flow behaviour of fuels and oils, the copolymers being derived from a terminally-unsaturated intermediate polymer obtained via a metallocene process involving hydrogen.

Concentrates containing specific functionalised diblock copolymers serve as effective additives for improving the cold flow behaviour of fuels and oils, the copolymers being derived from a terminally-unsaturated intermediate polymer obtained via a metallocene process involving hydrogen.

Concentrates containing specific functionalised diblock copolymers serve as effective additives for improving the cold flow behaviour of fuels and oils, the copolymers being derived from a terminally-unsaturated intermediate polymer obtained via a metallocene process involving hydrogen.