摘要:
A novel copolymer resin which has excellent tackifying properties for selected elastomers useful in hot melt and pressure sensitive adhesives is produced by the copolymerization of beta-pinene with other terpenes or hydrocarbon monomers, followed by thermal catalytic isomerization of the resin produced. Typically, beta-pinene and styrene (80/20) are copolymerized at a temperature between 0.degree. to 60.degree. C. under anhydrous conditions with a Lewis acid catalyst in a solvent. After catalyst removal, the copolymer resin is isomerized with iodine as a catalyst at a temperature between 200.degree. to 260.degree. C. Excellent yields of high softening point tackifier resins are produced.
摘要:
Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected null-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.
摘要:
A cycloolefin rubber having a weight average molecular weight of 100,000 to 800,000, having a silyl group at the polymer chain end, and containing a fatty acid ester of a polyvalent alcohol. A cycloolefin rubber excellent in processability at the time of blending and kneading and excellent in low heat buildup property can be provided.
摘要:
A cycloolefin rubber having a weight average molecular weight of 100,000 to 800,000, having a silyl group at the polymer chain end, and containing a fatty acid ester of a polyvalent alcohol. A cycloolefin rubber excellent in processability at the time of blending and kneading and excellent in low heat buildup property can be provided.
摘要:
Process for the preparation of a hydrocarbon polymer comprising two end groups having 2-oxo-1,3-dioxolan-4-yl final parts by ring opening metathesis in the presence of a metathesis catalyst, of a chain transfer agent comprising a carbonate ring and of a compound of formula comprising at least one C6-C16 ring having a carbon-carbon double bond.Hydrocarbon polymer capable of being obtained by this process.Process for the preparation of polyurethanes by reaction of this polymer and of a compound comprising at least one amine group, and polyurethanes thus obtained.
摘要:
This disclosure relates to amphiphilic compounds containing a cyclobutene or cyclobutane moiety. In some embodiments, the compounds are useful for treating infection by Mycobacterium such as Mycobacterium tuberculosis. Cyclobutene containing compounds are also useful as monomers in the preparation of amphiphilic polymers.
摘要:
Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected &agr;-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.
摘要:
Embodiments in accordance with the present invention encompass water soluble polycyclic vinyl addition polymers having a norbornene type repeat unit derived from a norbornene type of monomer that encompasses a saccharide functional moiety. Embodiments in accordance with the present invention also encompass low and high molecular weight polymers with low catalyst loading.