Abstract: An aqueous pigment ink composition for writing utensils is provided, which is capable of providing handwritings with good opacifying properties and exhibits little difference in whiteness between handwritings obtained immediately after writing and after drying. When the composition is applied to the inner stick type of writing utensils, an ink having good opacifying properties is passed out. The ink composition comprises, at least, an emulsion of styrene resin-based doughnut-shaped flat particles as a white opacifying agent.

Abstract: There are provided compositions and processes for enhancing the initial and long term shear strength and initial tip stability of process wastes. The process wastes are aqueous dispersions such as the slurry tailings from mining operations. The compositions are comprised of the process waste, cement and a water absorbent polymer which is a mixture of Mannich acrylamide polymers and dimethyldiallyammonium halide polymers.

Abstract: A method for preparing thermo-crosslinkable and/or thermoplastic elastomer blends by mixing the elastomer with plasticizer oil and other additives, said method comprising the steps of:(a) continuously premixing the crushed elastomer in an annular zone mixer with at least part of said plasticizer oil, and optionally with at least part of said other additives, to form a preblend in which said elastomer is decomposed and said additives are embedded in the polymer matrix;and thereafter(b) completing the mixing of said premix, and optionally of the remainder of said additives, in a mixing unit working batchwise or continuously.

Abstract: A fiber-reinforced resin composition having surface smoothness, which comprises(1) 100 parts by weight of a thermoplastic resin composition comprising an aromatic polycarbonate resin and a thermoplastic polyester resin in a weight ratio of from 10/90 to 90/10,(2) from 50 to 100 parts by weight of glass fiber sheet chips having an almost rectangular shape, each side having a length of from 1 to 30 mm, the glass fiber sheet chips being obtained by forming E-glass fibers having an average fiber diameter of 2 .mu.m or less which have been surface-treated with a silane coupling agent, into a sheet by a paper making process and then cutting the resulting sheet, and(3) from 0 to 40 parts by weight of a thermoplastic elastomeric polymer,and an exterior automotive part showing excellent image clarity, obtained by shaping the fiber-reinforced resin composition.

Abstract: A resin composition comprising a polymeleimide compound having two or more maleimide groups in one molecule, a phenol novolac resin of which phenolic hydroxyl groups are epoxidized and allyl-etherified and, as an optional ingredient, a curing agent, or a resin composition comprising a polymaleimide compound having two or more maleimide groups in one molecule, a phenol novolac resin of which phenolic hydroxyl groups are allyl-etherified and an epoxy resin; and a heat resistant composite material comprising cured product of said resin composition as its matrix phase and containing a fiber as its reinforcing material.