摘要:
An adhesion-promoting system for a rubber composition, wherein the system comprises a novolac resin prepared by reaction of an aldehyde A1 with a phenolic compound; and an organic manganese salt.
摘要:
An adhesive for a tennis ball of the present disclosure includes base rubber and a filler. The base rubber contains, as a main component thereof, liquid rubber having a number average molecular weight of not less than 10,000. The filler has an average nitrogen specific surface area of not less than 40 m 2 /g. A tennis ball of the present disclosure includes a hollow core made of a rubber material. The core includes two hemispherical half cores. The two half cores are adhered to each other by using the adhesive for a tennis ball.
摘要:
[Problem] To provide an adhesive sheet in which the adhesive strength of an adhesive layer to other adherends is low, adhesive layers can be firmly bonded to each other, the adhesive layers will not be destroyed even if the adhesive layers are peeled after having once been bonded, and sufficient bonding strength is obtained even if the adhesive layers are re-bonded. [Solution] An adhesive sheet in which an intermediate layer containing methyl methacrylate-grafted natural rubber is provided on a substrate containing a vinyl chloride resin and a plasticizer, and an adhesive layer comprising an adhesive containing the plasticizer and a rubber component containing natural rubber and methyl methacrylate-grafted natural rubber is provided on the intermediate layer, wherein a degree of swelling of the rubber component with respect to the plasticizer is by a factor of 1.5 to 4.5.
摘要:
A continuous process for making a pressure-sensitive adhesive is disclosed. A mixture comprising natural rubber having a Mooney viscosity of 85 to 100, a tackifier, a filler, and 0.1 to 5 wt.% of an added C 12 -C 24 fatty acid based on the amount of mixture is masticated in a first section of a single- or twin-screw extruder. Mastication of the mixture continues in at least one subsequent extruder section in the presence of additional tackifier. The product is a homogeneous, reduced-viscosity pressure-sensitive adhesive. The minor proportion of added C 12 -C 24 fatty acid aids mastication of the rubber and enables high throughput without addition of peptizers. Duct tapes made from the adhesives display improved adhesion to steel, better adhesion bond strength, and enhanced seven-day clean removability from even difficult substrates such as marble or ceramic tile.
摘要:
Provided is a polyvinyl chloride (PVC) adhesive tape less susceptible to cracking at low temperatures even with thin PVC film. The pressure-sensitive adhesive (PSA) tape provided by the present invention comprises a PVC film and a PSA layer placed on at least one face of the PVC film. The PSA tape shows a tensile elongation at break of 80 % or higher at -20 °C.
摘要:
A composition includes a curable material component with a backbone of a completely or substantially completely hydrogenated hydrocarbon based rubber material which is completely or substantially free of carbon-carbon double and triple bonds, a photoinitiator component, and an inert filler. The composition, when cured, is stable at 250C and is low outgassing. A method milling a photoinitiator component and an inert filler with a curable material component to form a precurable mixture and at least partially curing the precurable mixture by ultraviolet light. An apparatus includes a spool, a pressurizer, and an ultraviolet lamp. The spool is configured for releasing a polymer film. The pressurizer is configured to release an adhesive onto the polymer film to form a pre-photo curable adhesive-backed polymer film. The ultraviolet lamp is configured to at least partially cure the pre-photo curable adhesive-backed polymer film.