摘要:
The invention relates to surface modifying macromolecules (SMMs) having high degradation temperatures and their use in the manufacture of articles made from base polymers which require high temperature processing. The surface modifier is admixed with the base polymer to impart alcohol and water repellency properties.
摘要:
The present invention refers to a resin composition comprising an ester compound and a polymer, wherein the ester compound and the polymer are obtainable by reacting a diene, a dienophile and a carboxylic acid. The invention also refers to adhesive compositions comprising the resin composition.
摘要:
The invention relates to polymer compositions useful as thermoplastic elastomers for extrusion, calendering, blow molding, thermoforming, and foam processing, and to articles made therefrom. Such improved melt strength thermoplastic elastomers include a blend of propylenic resin (A) and elastomer component (B) of styrene or ethylene, wherein the (A) resin is partially branched and/or the (B) elastomer is partially crosslinked by the addition of multifunctional acrylic monomer (C) containing at least three acrylate groups.
摘要:
There is provided a process for producing a modified polymer rubber having modified both ends, which comprises the steps of:
(1) reacting a compound represented by the following formula (1) with an organic alkali metal compound to produce a chemical species,
(2) polymerizing a conjugated diene monomer or a combination of a conjugated diene monomer with an aromatic vinyl monomer in the presence of the chemical species to produce an active polymer having an alkali metal at an end thereof, and (3) reacting the active polymer with a functional group-carrying modifying agent in a hydrocarbon solvent to produce the modified polymer rubber having modified both ends.
摘要:
The present invention provides a pneumatic tire provided with a tread formed from a rubber composition that can achieve balanced improvements in fuel economy and wet-grip performance. The present invention relates to a pneumatic tire provided with a tread formed from a rubber composition, the rubber composition containing a rubber component, silica, and a specific silane coupling agent, the rubber component containing, based on 100% by mass of the rubber component, not less than 5% by mass of a conjugated diene polymer containing a constituent unit based on a conjugated diene and a specific constituent unit, at least one terminal of the polymer being modified with a specific compound, the rubber composition containing the silica in an amount of 5 to 150 parts by mass relative to 100 parts by mass of the rubber component.
摘要:
A polymerization catalyst comprising (a) a specific transition metal compound, (b) either a compound capable of reacting with the compound (a) to form an ionic complex or a specific oxygenic compound, and (c) an alkylating agent as an optional ingredient; and a process for producing polymers using the catalyst. By use of this catalyst, polymers reduced in residual metal content and having a high molecular weight are obtained, and simplication of polymer production processes and a reduction in production cost can be attained.
摘要:
Terpolymers of maleic anhydride, a C1-C5 alkyl vinyl ether and isobutylene or a C12-C14 alpha-olefin, and crosslinked products thereof, are provided herein for use in thickener, denture adhesive, sunscreen, hair spray, and waterproofing compositions. The alpha-olefin comonomer is a hydrophobic, straight chain, unsaturated hydrocarbon such as dodecene or tetradecene, which is present in the terpolymer in predetermined amounts relative to the hydrophilic maleic anhydride component, to provide a terpolymer having a suitable HLB for these applications. The isobutylene comonomer provides hydrophilic terpolymer compositions which are particularly useful as denture adhesives.