Disclosed are polymers derived from biomass. More specifically described are -pinene-based polymers, copolymers and compositions comprising -pinene-based polymers. Also disclosed are methods of making the same.

All organic, dielectric polymers with high discharge efficiency at elevated operation temperatures are reported.

Provided is a film for a capacitor that can improve dielectric strength retention at high temperatures and can also improve metal vapor deposition properties and formability. The film for a capacitor contains a hydrogenated dicyclopentadiene ring-opened polymer that is crystalline and has a heat shrinkage ratio of not less than 0.01% and not more than 1.0% when heated at 200 C. for 10 minutes, a plane orientation factor of 0.01 or more, a density of 1.0310.sup.6 g/m.sup.3 or more, and a thickness of 15.0 m or less.

Porous compositions such as flexible polymers with side chain porosity are generally provided. In some embodiments, the composition comprises a flexible polymer backbone and a plurality of rigid side chains. In some embodiments, the rigid side chains form pores. In some embodiments, the rigid side chains may comprise two or more [2.2.2] bicyclic cores (e.g., formed by a ring opening metathesis polymerization. The compounds and methods described herein may be useful in various applications including, for example, gas separation.

This invention relates generally to metal carbene olefin metathesis catalyst compounds, to the preparation of such compounds, compositions comprising such compounds, methods of using such compounds, articles of manufacture comprising such compounds, and the use of such compounds in the metathesis of olefins and olefin compounds. The invention has utility in the fields of catalysts, organic synthesis, polymer chemistry, and industrial and fine chemicals industry.

A rubber composition that contains 0.1 to 50 parts by weight of an organic peroxide with respect to 100 parts by weight of a cyclopentene ring-opening polymer.

Described herein are compositions having an eight-membered monocyclic unsaturated hydrocarbon, methods and system to separate the eight-membered monocyclic unsaturated hydrocarbon at from a hydrocarbon mixture including additional nonlinear unsaturated C.sub.8H.sub.2m hydrocarbons with 4?m?8, by contacting the hydrocarbon mixture with a 10-ring pore molecular sieve having a sieving channel with a 10-ring sieving aperture with a minimum crystallographic free diameter greater than 3 ? and a ratio of the maximum crystallographic free diameter to the minimum crystallographic free diameter between 1 and 2, the molecular sieve having a T1/T2 ratio?20:1 wherein T1 is an element independently selected from Si and Ge, and T2 is an element independently selected from Al, B and Ga, the 10-ring pore molecular sieve further having a counterion selected from NH.sub.4.sup.+, Li.sup.+, Na.sup.+, K.sup.+ and Ca.sup.++.

The invention relates to a method of forming an olefin from a first olefin and a second olefin in a metathesis reaction, comprising step (i): (i) reacting the first olefin with the second olefin in the presence of a compound that catalyzes said metathesis reaction such that the molar ratio of said compound to the first or the second olefin is from 1:500 or less, and the conversion of the first or the second olefin to said olefin is at least 50%, characterized in that as compound that catalyzes said metathesis reaction a compound of the following formula is used:

##STR00001## wherein M is Mo or W; R.sup.1 is aryl, heteroaryl, alkyl, or heteroalkyl; optionally substituted; R.sup.2 and R.sup.3 can be the same or different and are hydrogen, alkyl, alkenyl, heteroalkyl, heteroalkenyl, aryl, or heteroaryl; optionally substituted; R.sup.5 is alkyl, alkoxy, heteroalkyl, aryl, heteroaryl, silylalkyl, silyloxy, optionally substituted; and R.sup.4 is a residue R.sup.6X, wherein X=O and R.sup.6 is aryl, optionally substituted; or X=S and R.sup.6 is aryl, optionally substituted; or X=O and R.sup.6 is (R.sup.7, R.sup.8, R.sup.9)Si; wherein R.sup.7, R.sup.8, R.sup.9 are alkyl or phenyl, optionally substituted; or X=O and R.sup.6 is (R.sup.10, R.sup.11, R.sub.12)C, wherein R.sup.10, R.sup.11, R.sup.12 are independently selected from phenyl, alkyl; optionally substituted; and to the catalysts used in the method.

A nanocapsule includes a liquid hydrophobic care including an essential oil, and a shell encapsulating the core. The shell includes a copolymer having repeating units of Formula (I) and (II) wherein X, L.sup.1, R.sup.1, R.sup.2, y, and p are as described herein. A dispersion is also disclosed, wherein the dispersion includes a plurality of nanocapsules. The nanocapsules described herein are particularly useful for the treatment of bacterial biofilms. ##STR00001##

This invention relates to the field of polymers and olefin polymerization, and more specifically olefin metathesis polymerization. Specifically, the present invention provides a polymer comprising rigorously alternating AB subunits and methods of formation of the AB alternating polymers. In the polymers and process of the invention, the A monomer is derived from a cyclobutene derivative, and the B monomer is derived from a cyclohexene derivative. The polymerization takes place in the presence of an olefin metathesis catalyst.