stabilized rubbers google patents at brazil
Stabilization of halogenated rubber
Halogenated rubbery polymers are stabilized against discoloration with a weak base such as 100 to 500 ppm sodium bicarbonate. The additive is added to the rubbery polymers after dewatering in the finishing step of their manufacture. The curability of the stabilized rubbers is not adversely affected by the sodium bicarbonate additive.
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BR102016022898A2
dregs treatment process, treated dregs, their use, rubber vulcanization process, and vulcanized rubber. The invention relates to a method of treating dregs for its application as a vulcanization activator of rubbers, terminating this waste generated in the pulp industry and providing vulcanized rubbers with similar or improved properties than those already known.
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Stabilized halogenated butyl rubber
A stabilized halogenated butyl rubber composition comprises halogenated butyl rubber, an alkali metal or alkaline earth metal carboxylate, an ether and an oxide or hydroxide of a Group IIA metal as exemplified by halogenated butyl rubber containing both bromine and chlorine stabilized with a composition comprising calcium stearate, polyethoxylated adducts of sorbitol esterified with from 1 to ...
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US2380299A - Stabilized rubber compositions
US2380299A US434254A US43425442A US2380299A US 2380299 A US2380299 A US 2380299A US 434254 A US434254 A US 434254A US 43425442 A US43425442 A US 43425442A US 2380299 A US2380299 A US 2380299A Authority US United States Prior art keywords rubber unvulcanized nickel oven sulfide Prior art date 1942-03-11 Legal status (The legal status is an assumption and is not a legal conclusion.
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US9394028B2 - Rubber mounted drivetrain ...
A stabilized rubber mounted drivetrain includes a standard rubber mounted drivetrain, further comprising a swingarm pivotal axle, rubber isolators, support brackets; and swingarm stabilizers, which each further include a stabilizer cap, a thrust bearing, and a spacer, such that a swingarm stabilizer is mounted to both ends of the swingarm pivot axle.
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US4104218A - Stabilized halobutyl rubber
A stabilized halobutyl rubber composition comprises (1) a halobutyl rubber e.g. chlorobutyl, (2) an alkali metal carboxylate or an alkaline earth metal carboxylate e.g. calcium stearate and (3) an ether, e.g. a polyether. With this stabilization system during the drying process in the halobutyl plant hydrogen halide evolution is strongly delayed and even if some hydrogen halide is evolved ...
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EP0822204A3
Nitrile rubber can be synthesized by copolymerizing acrylonitrile and 1,3-butadiene in an aqueous emulsion. After these monomers have been polymerized, it is, of course, necessary to recover the polymer from the aqueous emulsion. The present invention discloses an improved method for the recovery of nitrile rubber from a nitrile rubber containing emulsion, said method comprising the steps of ...
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Stabilized molded rubber keyboards
This invention relates to stabilized molded rubber keyboards. BACKGROUND OF THE INVENTION. Molded rubber keyboards have been used in combination with underlying printed circuit boards to provide a keyboard structure much less expensive than those where each key requires a separate push button member separately mounted in a frame.
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Chemical Patents now includes US published applications and patents through at least the end of 2007. Chemical engineers have added a filter to the advanced search form that allows you to retrieve only issued patents or applications. However, there are …
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