Disclosed is method for on-site glyoxylation of polyacrylamide in a paper or board mill, where a discontinuous batch glyoxylation reaction of aqueous reaction mixture is performed in reactor vessel having driven agitator to form aqueous polymer composition comprising glyoxylated polyacrylamide. The method comprises forming or obtaining the aqueous reaction mixture comprising polyacrylamide base polymer and glyoxal, determining alkali consumption of the mixture, and adding to the mixture, based on determined alkali consumption, pre-determined amount of alkali for adjusting pH to 8-10. The temperature is optionally adjusted to 15-40° C. and the on-site glyoxylation reaction of polyacrylamide base polymer is allowed to proceed. Viscosity of the mixture and/or a variable related to the viscosity is measured, acid is added to the mixture for lowering pH to <8, when a predetermined end viscosity value is attained, and the aqueous polymer composition comprising glyoxylated polyacrylamide is removed from the reaction vessel.

Provided are a binder for a secondary battery, a negative electrode including the same, and a secondary battery including the same. More particularly, the binder for a secondary battery including a crosslinked product of a copolymer with a silane-based crosslinking agent according to the present invention may have excellent thermal resistance and mechanical properties and effectively improve a binding force, and the negative electrode for a secondary battery and the secondary battery including the same may effectively suppress expansion of a negative electrode to improve charge/discharge cycle characteristics and performance of the secondary battery.

The present invention relates to a polymer comprising repeating units derived from at least one first monomer (monomer A) which is a molecule comprising a thiolactone ring and an ethylenically unsaturated, polymerizable double bond, and at least one second monomer (monomer B) which is N-vinyl pyrrolidone. Furthermore the present invention relates to a modified polymer, the structure of which is identical to the structure of the said polymer apart from the only difference, which is that all or at least some of the thiolactone moieties of the said polymer are modified by opening the thiolactone ring with a substance selected from the group consisting of ammonia, a primary amine, 2-amino-1-ethanol and L-lysine, wherein the N-atom of said substance is binding to the carbonyl group of the opened thiolactone ring. Furthermore, the present invention relates to a process for making the modified polymer and to the use of the polymer or of the modified polymer for treating hair.

Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. The transportable polymerization unit comprises a cylindrical upper part, a conical part at its lower end, feeds for the aqueous monomer solution, a closable bottom opening, and means allowing to deploy the polymerization unit in a vertical manner.

A process can be used to produce a charge storage unit, especially a secondary battery, the electrodes of which contain an organic redox-active polymer, and which includes a polymeric solid electrolyte. The solid electrolyte is obtained by polymerizing from mixtures of acrylates with methacrylates in the presence of at least one ionic liquid, which imparts advantageous properties to the charge storage unit.

Provided are a liquid crystal composition which has excellent planarity in a case of being formed into a coating film and is also capable of forming a reflective layer having excellent diffuse reflectivity, a reflective layer that is formed using the liquid crystal composition, and a method for producing a reflective layer. Provided also is a copolymer that can be used as an alignment control agent for a liquid crystal compound.

The present disclosure provides methods for producing an olefin polymer by contacting a C.sub.3-C.sub.40 olefin, ethylene and a diene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted indacenyl group and obtaining a C.sub.3-C.sub.40 olefin-ethylene-diene terpolymer typically comprising from 1 to 35 mol % of ethylene, from 98.9 to 65 mol % C.sub.3-C.sub.40 olefin, and, optionally, from 0.1 to 10 mol % diene. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.

An ethylene-α-olefin copolymer capable of implementing formation of a film having excellent slipperiness and suppressed fish eyes, a method of producing the ethylene-α-olefin copolymer, an ethylene-based resin composition containing the ethylene-α-olefin copolymer, and a film containing the ethylene-α-olefin copolymer or the ethylene-based resin composition. An ethylene-α-olefin copolymer according to the present invention has: a monomer unit (1) based on ethylene; and a monomer unit (2) based on an α-olefin having 3 to 20 carbon atoms, wherein a branching parameter is 0.70 to 0.90, and a light scattering area ratio is 1.60 to 3.60.

A composition includes a 4-methyl-1-pentene-based polymer in which at least one or more temperatures showing a local maximum value of a loss tangent (tan δ) are present in a range of 10° C. or higher and 100° C. or lower, and the local maximum value of the loss tangent is 0.5 or more and 3.5 or less, and an organic compound, in which a content of the organic compound is 5 to 250 parts by mass with respect to 100 parts by mass of the 4-methyl-1-pentene-based polymer, and the organic compound has a viscosity (mPa.Math.s) in a range of 65 to 120, or a ratio between a melt flow rate (g/10 min.) of the 4-methyl-1-pentene-based copolymer and a melt flow rate (g/10 min.) of the organic compound is 1:1.0 to 0.1.

An optical polymer material includes an alternating copolymer made of a monomer of a styrene derivative and a monomer of a maleimide derivative, and has a nonlinear property in which the photoelastic coefficient of the optical polymer material decreases to a predetermined value with increase in composition ratio of the styrene derivative, and rises above the predetermined value with further increase in composition ratio of the styrene derivative. A composition ratio of the styrene derivative is within a predetermined range. An absolute value of the photoelastic coefficient is equal to or smaller than a first absolute value within the predetermined range of the composition ratio, and an absolute value of the intrinsic birefringence is equal to or smaller than a second absolute value of the optical polymer material within the predetermined range of the composition ratio.