Described herein are depolymerized polystyrene resins derived from polystyrene source resins. The depolymerized polystyrene resins undergo a depolymerization in which chemical bonds are cleaved, producing depolymerized polystyrene resins of lower molecular weight. The polystyrene resins may be modified by chemical reaction with monomers, polymers, and oligomers, such as acrylates thereof. Also described are ink and coating compositions that include the depolymerized and modified polystyrene resins.

Polyolefin elastomers are widely employed commodity polymers. There remains a desire to expand the structural diversity of polyolefin elastomers to facilitate their use in additional applications. Polyolefin elastomers may be graft copolymers that comprise: a first polymer chain comprising at least a first olefinic monomer comprising isobutylene and a second olefinic monomer bearing a benzylic carbon atom or an allylic carbon atom, and a second polymer chain bonded to the benzylic carbon atom or the allylic carbon atom of the first polymer chain. The second polymer chain comprises at least one monomer that is not present in the first polymer chain. The second polymer chain may be bonded to the first polymer chain by generating a carbanion upon the benzylic carbon atom or the allylic carbon atom and growing the second polymer chain by anionic polymerization.

The invention relates to long-chain branched polypropylene composition (b-PPC) comprising at least one long-chain branched propylene homopolymer or copolymer (b-PP) and at least one linear propylene homopolymer or copolymer (l-PP). The long-chain branched polypropylene composition (b-PPC) being suitable for foam application.

The invention relates to long-chain branched polypropylene composition (b-PPC) comprising at least one long-chain branched propylene homopolymer or copolymer (b-PP) and at least one linear propylene homopolymer or copolymer (l-PP). The long-chain branched polypropylene composition (b-PPC) being suitable for foam application.

A photocurable resin composition maintains adhesion to an electrolyte membrane which is a hard-to-bond material even after being immersed in warm water. A photocurable resin composition includes the following ingredients (A) to (C): ingredient (A): a polymer having one or more (meth)acryloyl groups and having a polyisobutylene skeleton containing a [CH.sub.2C(CH.sub.3).sub.2]unit, ingredient (B): a photoradical polymerization initiator, and ingredient (C): a mixture at least containing, as an ingredient (C1), a compound selected from silicone oligomers each having one or more alkoxy groups and one or more (meth)acryloyl groups and silane monomers each having one or more alkoxy groups and one or more isocyanate groups, and as an ingredient (C2), a compound selected from silicone oligomers each having one or more alkoxy groups and one or more epoxy groups and silicone oligomers each having one or more alkoxy groups and one or more phenyl groups.

There is provided a vinyl alcohol-based polymer having an olefin in side chain, comprising 0.001 to 10 mol % of a structural unit represented by Formula (1) based on the total amount of structural units, wherein the total carbon number of X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is 2 or more. The vinyl alcohol-based polymer having an olefin in side chain has excellent storage stability, good solubility in water or an organic solvent even after thermal treatment, and excellent reactivity to high energy beam. In Formula (1), X represents an optionally substituted divalent aliphatic hydrocarbon group, an optionally substituted divalent alicyclic hydrocarbon group, an optionally substituted divalent aromatic hydrocarbon group, or a group consisting of two or more of these groups which are linked via at least one bond selected from the group consisting of an amide bond, an ester bond, an ether bond, and a sulfide bond; R.sup.1, R.sup.2, R.sup.3 and R.sup.4, independently of each other, represents a hydrogen atom, an optionally substituted aliphatic hydrocarbon group, an optionally substituted alicyclic hydrocarbon group, or an optionally substituted aromatic hydrocarbon group; and X, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 can be arbitrarily combined to form a ring structure).

This disclosure describes polymerization processes and processes for quenching polymerization reactions using reactive particulates, such as high molecular weight functionalized olefin copolymers, as quenching agents, typically in solution or bulk polymerization processes.

A binder composition for a non-aqueous secondary battery electrode contains water and a polymer that includes an aromatic vinyl monomer unit, a conjugated diene monomer unit, and a hydrophilic monomer unit. The polymer has a median diameter of not less than 50 nm and not more than 800 nm, and the proportional content of the hydrophilic monomer unit in the polymer is not less than 4.0 mass % and not more than 20 mass %. Moreover, the polymer has a loss tangent tan of not less than 0.001 and less than 0.40 and a loss modulus G of 1,600 kPa or less.

A binder composition for a non-aqueous secondary battery electrode contains water and a polymer that includes an aromatic vinyl monomer unit, a conjugated diene monomer unit, and a hydrophilic monomer unit. The polymer has a median diameter of not less than 50 nm and not more than 800 nm, and the proportional content of the hydrophilic monomer unit in the polymer is not less than 4.0 mass % and not more than 20 mass %. Moreover, the polymer has a loss tangent tan of not less than 0.001 and less than 0.40 and a loss modulus G of 1,600 kPa or less.

Disclosed is a polypropylene with an MFR of at least 20 g/10 min comprising a homopolypropylene and within a range from 2 wt % to 20 wt % of a propylene--olefin copolymer by weight of the polypropylene, where the homopolypropylene has a MFR within a range from 30 g/10 min to 200 g/10 min, where the propylene--olefin copolymer comprises within a range from 30 wt % to 50 wt % -olefin derived units by weight of the propylene--olefin copolymer, and has an IV within a range from 4 to 9 dL/g. The polypropylene may be obtained by combining a Ziegler-Natta catalyst having two transition metals with propylene in reactors in series to produce the homopolypropylene followed by a gas phase reactor to produce a propylene--olefin copolymer blended with the homopolypropylene.