摘要:
The present invention relates to a rubber modified thermoplastic resin composition comprising a discontinuous elastomeric phase dispersed in a rigid thermoplastic phase, wherein at least a portion of the rigid thermoplastic phase is grafted to the elastomeric phase, which is prepared by a method comprising the steps of: (a) polymerizing a mixture of monomers in a first stage in the presence of the elastomeric phase, at least one of which monomers is selected from the group consisting of vinyl aromatic monomers and at least one of which monomers is selected from the group consisting of monoethylenically unsaturated nitrile monomers, followed by (b) polymerizing one or more monomers in at least one subsequent stage in the presence of the elastomeric phase from (a), wherein the one or more monomers comprise at least one monomer selected from the group consisting of (C1-C12)alkyl- and aryl-(meth)acrylate monomers. The method is also provided.
摘要:
A binder composition for aqueous coatings that exhibit high gloss and superior corrosion resistance when applied to metal substrates comprising an aqueous emulsion copolymer, the copolymer including as polymerized units, at least one ethylenically unsaturated monomer and an ethylenically unsaturated strong acid monomer, such as phosphorus containing monomers, particularly phosphoethylmethacrylate; or salts thereof. Also provided is a method for achieving high gloss and superior corrosion resistance of metal substrates by coating a substrate with an aqueous coating composition comprising the binders of the present invention and drying, or allowing to dry, the aqueous composition.
摘要:
A toughened cyanoacrylate adhesive composition including a cyanoacrylate monomer and an elastomeric copolymer soluble in the monomer, the copolymer being the reaction product of an olefin C2-20 and a (meth)acrylate ester. The invention further discloses novel elastomeric copolymers which do not contain additives or functional groups which can interfere with the cure rate or stability of the adhesive composition in which they are included. Benefits of the copolymers include improved toughness of the cured adhesive composition as measured by Dynamic Mechanical Analysis.
摘要:
An object of the present invention is to provide cationic hollow crosslinked polymer particles that maintain a cationic property over a wide pH range, has adequate strength, and is favorable for use in filled paper, pigments for coating paper, additives for paints, fillers for resins, rubbers, and the like. Another object of the present invention is to provide a method of producing the abovementioned cationic hollow crosslinked polymer particles with excellent characteristics in a stable manner. The hollow crosslinked polymer particles of the present invention are characterized in that (I) the zeta potential as measured in an aqueous medium of pH 2 to 9 is in the range of +5 to +100 mV, (II) the volume hollowness is in the range of 1 to 80%, and (III) the average particle diameter is in the range of 0.03 to 10 &mgr;m. This hollow crosslinked polymer particles are produced by a method that (a) 1 to 99.99 weight % of a crosslinking monomer, (b) 0.01 to 15 weight % of a cationic monomer, and (c) 0 to 98.99 weight % of a copolymerizable monomer that is non-crosslinking and nonionic (the total amount of the monomers being 100 weight %) are polymerized under the presence of polymer particles that are swellable by at least one of the above monomers. This hollow crosslinked cationic polymer particles are utilized for paint composition, cationic electrodeposition paint composition, resin composition, filled paper, paper coating composition, and coated paper, and the like.
摘要:
The present invention is directed to a release coating composition comprising a polymer of butadiene, styrene, acrylonitrile polymer having a Tg from 0° C. to about 75° C. The present invention is also directed to an article of manufacture having a release coating comprising the polymer for pressure sensitive adhesives.
摘要:
Process for forming a modified polymer having unsaturated carbon/carbon bonds including taking or making a colloidal dispersion of the polymer in an aqueous medium, swelling the polymer in the colloidal particles with at least one polymerizable monomer having a solubility in water of less than 10−3 molar, and inducing a free-radical polymerization of the monomer(s) within the swollen colloidal particles of the polymer such that the monomer enters into a grafting reaction with the polymer. The process is particularly appropriate for preparation of modified natural rubber latex.
摘要:
An objective of the present invention is to provide an unsaturated nitrile-conjugated diene-typed rubber capable of giving a vulcanized rubber which exhibits is well-balanced in terms of the mechanical strength, the oil resistance and the like, as well as a process for the production of the same, and a rubber composition which is containing such rubber and exhibits an excellent processability as well as a process for the production of the same. The unsaturated nitrile-conjugated diene-typed rubber in the invention is produced by polymerizing using certain amounts of an olefinically unsaturated nitrile monomer such as acrylonitrile and a conjugated diene monomer such as butadiene at first, and continuing by supplying a remainder of the monomers at a certain ratio continuously or stepwise to proceed the polymerization. The unsaturated nitrile-conjugated diene-typed rubber is constituted 55 to 80 wt % of an olefinically unsaturated nitrile monomer unit as a repeating unit and 20 to 45 wt % of a conjugated diene monomer unit as a repeating unit based on 100 wt % of total of the monomer units. Glass transition temperature is null15 to 30null C. and the extrapolated temperature of the termination of the glass transition is preferably 70null C. or less.
摘要:
A binder composition for aqueous coatings that exhibit high gloss and superior corrosion resistance when applied to metal substrates comprising an aqueous emulsion copolymer, the copolymer including as polymerized units, at least one ethylenically unsaturated monomer and an ethylenically unsaturated strong acid monomer, such as phosphorus containing monomers, particularly phosphoethylmethacrylate; or salts thereof Also provided is a method for achieving high gloss and superior corrosion resistance of metal substrates by coating a substrate with an aqueous coating composition comprising the binders of the present invention and drying, or allowing to dry, the aqueous composition.
摘要:
Mass-continuous process for the production of vinylaromatic polymers which comprises feeding a reaction mixture containing at least one vinylaromatic monomer to at least one tubular reactor of the PFR type and operating with a recycling ratio, referring to the recycling flow-rate/feeding flow-rate, of less than 4.
摘要:
A thermosensitive recording medium having a support, a thermosensitive layer provided on the support and capable of forming a color image when heated imagewise, and a protecting layer provided on the thermosensitive layer and containing a pigment and a core-shell resin obtained by polymerizing a vinyl monomer in an emulsion containing acrylonitrile-containing polymer seeds such that a polymer of the vinyl monomer is copolymerized on each of the seeds to form a shell surrounding a core of the seed, wherein the core-shell resin meets with at least one of the following criteria (a) and (b):(a) the glass transition point Tg of the core is at least 15.degree. C.; and(b) the glass transition point Tg of the shell is at least 150.degree. C. The vinyl monomer contains acrylamide and/or methacrylamide.