Abstract:
A wet mix elastomer composite comprising carbon black dispersed in an elastomer including a blend of a natural rubber and styrene-butadiene rubber. When the wet mix elastomer composite is processed with CTV Method 1, the vulcanized wet mix elastomer composite exhibits a resistivity that A) has a natural logarithm satisfying the equation ln(resistivity)≧−0.1(loading)+x, where x is 14, or B) is at least 2.9 times greater than the resistivity of a vulcanized dry mix elastomer composite having the same composition and prepared using Comparative CTV Method 1.
Abstract:
An emulsion comprising the following (A), (B) and (C): (A) an olefinic copolymer comprising a structural unit derived from ethylene and/or a linear α-olefin and a structural unit derived from a vinyl compound represented by the formula (I):
CH 2 =CH-R (I)
wherein R represents a secondary alkyl group, a tertiary alkyl group or a alicyclic hydrocarbon group, or a polymer obtained by graft polymerizing an α,β-unsaturated carboxylic acid anhydride to the olefinic copolymer, (B) an acrylic resin comprising a structural unit derived from an a, α,β-unsaturated carboxylic acid and a structural unit derived from an α,β-unsaturated carboxylic acid ester, (C) water.
Abstract:
Fatty esters of oligoesters of a dicarboxylic acid and a polyol retaining at least one free hydroxyl group, particularly of the formula (I): R1-[OR2O-C (O)-R3-(O)C-]m-R4 (I), where R1 is H, a monocarboxylic acid group, or R6O-[C(O)-R3-(O)C]-; R2s are residues of polyols having at least one substituent free hydroxyl; R3s are hydrocarbylene; R4 is -OH, -OM where M is a salt forming metal, amine or ammonium, -OR6, or -OR2O-R7; R5 is C7 to C21 hydrocarbyl; R6 is C8 to C22 hydrocarbyl; R7 is H, or -C(O)R5; and m is 1 to 20; provided that at least one of R1 and R4 is or includes a C8 to C22 group, are surfactants. A range of surfactant properties can be obtained by varying the molecules within these ranges. Especially where R2 is derived from a higher polyol e.g. sorbitol, R3 is C2 to C6, and the fatty terminal group is C8 to C14, the products can be highly water soluble and effective oil in water emulsifiers.
Abstract:
A biodegradable copolymer with a core block comprising bioresorbable hydrophobic polyester segment and from 3 to 10 shell blocks comprising hydrophilic polyethylene glycol segment. The hydrophobic polyester segment and each of the hydrophilic polyethylene glycol segments are linked by a urethane linkage. A polymeric micelle composition containing the copolymer is also provided. The copolymer forms micelles when the concentration of the copolymer in a dispersing medium reaches or exceeds the critical micelle concentration. The micelles possess good drug and bioactive agent delivery characteristics and are suitable for use in drug delivery or cosmetic applications.
Abstract:
A dispersant is prepared by mixing in water by weight (i) 1.0 to 1.9 parts of polyvinyl alcohol saponified to less than 96% (preferably at least 70%) with (ii) 1.0 to 3.0 parts of a polyoxyethylene non-ionic surfactant, of HLB 16.5 to 17.5 to make a solution (D) containing 2.5 to less than 5.0 parts of dispersant; and a reducing agent part of a redox catalyst; 40 to 90% of 100 parts of the vinyl acetate (VA) to be polymerized is added to (D) and stirred to make a dispersion stable for at least 10 hours, and a polymerization is performed by subjecting the dispersion to ethylene at pressure of 98 - 980 Pa at 30 - 80 DEG C and adding the remaining 10 to 60% of the VA and an oxidizing agent part of the catalyst; optionally up to 30% of the dispersant (D) is added in this step. A third monomer having a functional group may be copolymerized in amount of 10 to 100 parts by weight of the VA. There is obtained an aqueous dispersion ("emulsion") of particles of not larger than 0.9 mu m of a copolymer of ethylene and vinyl acetate together with said dispersant; the dispersion has a good properties as an adhesive on a variety of substrates.
Abstract:
A printing ink composition is prepared containing a pigment and a polymer emulsion which comprises a first polymer network which is intertwined on a molecular scale with a second polymer network. Paper and paper board coating compositions are also described.
Abstract:
A stable blend of a vinyl halide latex and an acrylic latex is prepared by adjusting pH of the latexes to below about 6, adding a surfactant containing nitrogen having attached thereto alkyleneoxy groups to one or both of the latexes, and mixing the latexes, the surfactant is selected from cationic-nonionic surfactants, and amount thereof should be sufficient to maintain the latex blend stable for at least one month at 20°C.