Provided is a resin material for forming an underlayer film which is used to form a resist underlayer film used in a multi-layer resist process, the resin material including a cyclic olefin polymer (I), in which a temperature at an intersection between a storage modulus (G) curve and a loss modulus (G) curve in a solid viscoelasticity of the resin material for forming an underlayer film which is as measured under conditions of a measurement temperature range of 30 C. to 300 C., a heating rate of 3 C./min, and a frequency of 1 Hz in a nitrogen atmosphere in a shear mode using a rheometer is higher than or equal to 40 C. and lower than or equal to 200.

The present invention provides efficient processes for preparing brush polymers. In general, the process comprises three distinct reaction steps utilizing two separate catalysts. In the first step, the initiating compound comprising norbornene is contacted with a silane in the presence of a catalyst, thereby forming a silated intermediate. This silated intermediate is then contacted with a monomer in the presence of a catalyst via Group Transfer Polymerization (GTP). The resulting compound from GTP is contacted with a ring opening metathesis polymerization (ROMP) catalyst to prepare the brush polymer. Surprisingly, the brush polymers obtained from the above process are accessed in an efficient and rapid GTP methodology as compared to prior methods.

The invention relates to a hydrocarbon polymer comprising two exo-vinylene cyclic carbonate terminal groups, of formula (1), production method thereof and use of same for the production of coating, mastic and adhesive compositions.

The present invention provides:

a copolymer (A) which is a copolymer obtained by copolymerizing one or plural cycloolefin monomers and one or plural acyclic olefin monomers, or a copolymer obtained by copolymerizing two or more cycloolefin monomers, wherein the glass transition temperature (Tg) of the copolymer is 100 C. or higher, the refractive index of the copolymer is 1.545 or higher, and the Abbe's number of the copolymer is 50 or larger, and at least one of the cycloolefin monomers is a deltacyclene.

A cyclopentene ring-opening copolymer having a branch structure contains a structure in which at least four cyclopentene ring-opening polymer chains are linked via a branch-structural unit. At least part of the cyclopentene ring-opening polymer chains is terminally modified.

A liquid cyclopentene ring-opened copolymer includes a monomer unit derived from cyclopentene and a monomer unit derived from a norbornene compound, the monomer unit derived from cyclopentene being present in an amount of 60 to 95 wt %, the liquid cyclopentene ring-opened copolymer having a hydroxyl group-terminated copolymer chain and having a melt viscosity at 25 C. of less than 500 Pa.Math.s, which is measured using a B-type viscometer.

The present disclosure generally relates to interfaces and techniques for media playback on one or more devices. In accordance with some embodiments, an electronic device includes a display, one or more processors, and memory. A proximity between the electronic device and a second device is detected and in response to detecting the proximity between the electronic device and the second device, the media playback status of the electronic device and/or the second device is modified.

Provided is a phase difference film formed of a resin containing a polymer having crystallizability, and having an NZ factor of less than 1. A production method of the phase different film includes: bonding a second film to one or both surfaces of a first film formed of a resin containing the polymer having crystallizability and having a glass transition temperature Tg ( C.) and a melting point Tm ( C.), to obtain a third film, the second film having a shrinkage percentage in at least one direction at (Tg+30) C. of 5% or more and 50% or less; heating the third film to Tg C. or higher and (Tg+3) C. or lower to obtain a fourth film; and heating the fourth film to (Tg+50) C. or higher and (Tm40) C. or lower.

A polypentenamer-silica composite can include a surface-modified silica compound and a polypentenamer chain grafted onto the surface-modified silica compound. The polypentenamer has physical properties similar to natural rubber. The polypentenamer-silica composite is recyclable. As such, the polypentenamer-silica composite can be used for manufacturing recyclable tires.

Hydrocarbon copolymer P comprising 2 alkoxysilane end groups F.sup.1 and F.sup.2 of formulae: F.sup.1 : (RO).sub.3-tR.sub.tSiRNHC(O)O(CH.sub.2)g.sub.1 and F2: (CH.sub.2).sub.d1OC(O)NHRSiR.sub.tOR).sub.3-t; or F.sup.1: (RO).sub.3-tR.sub.tSiRNRC(O)NH(CH.sub.2).sub.g1 and F.sup.2: (CH.sub.2).sub.d1NHC(O)NRRSiR.sub.t(OR).sub.3-t; or F1: (RO).sub.3-tR.sub.tSiRNRC(O)(CH.sub.2).sub.g2 and F.sup.2: (CH.sub.2).sub.d2C(O)NRRSiR.sub.t(OR).sub.3-t; wherein t is 0, 1 or 2; g1 and d1 are 1, 2 or 3; g2 and d2 are 0, 1, 2 or 3; R and R represent a C.sub.1-C.sub.4 alkyl; R is a C.sub.1-C.sub.4 alkylene radical; R is method for producing the copolymer, by heating a statistical bipolymer A: poly(butadiene-isoprene), poly(butadiene-myrcene) or poly(butadiene-farnesene); and heating the formed product, in the presence of a chain transfer agent of formula (C) and adhesive composition of the copolymer and a crosslinking catalyst.