Non-staining retarder. (Materials).Retarder retarder, n a chemical added to a substance to slow a chemical reaction, prolong the set of the material, and provide more working time. RSF RSF RSF (Rudolph Steiner Foundation) Social Finance RSF Reporters Sans Frontières (French: Reporters Without Borders) RSF Reporteros Sin Fronteras (Spanish: Reporters Without Borders) is a non-staining and non-discoloring retarder for natural and synthetic rubber synthetic rubber: see rubber. compounds. Typical usage varies from 0.50 to 1.3 parts per 100 phr, depending on polymer and accelerator system used. Very effective with sulfenamide systems, Retarder RSF is also said to be effective in thiazole thi·a·zole n. 1. A colorless or pale yellow liquid, C3H3NS, containing a five-member ring composed of a nitrogen atom, a sulfur atom, and three carbon atoms, used in making dyes and fungicides. 2. systems, as well as low sulfur/thiuram cures, according to the company. Also useful for replasticizing of slightly scorched scorch v. scorched, scorch·ing, scorch·es v.tr. 1. To burn superficially so as to discolor or damage the texture of. See Synonyms at burn1. 2. stocks by cold mill mixing, Retarder RSF replaces the company's Retarder SAFE in many applications at a lower cost. When Retarder RSF is used in natural rubber, reversion is said to be minimized. This retarder does not bloom at recommended amounts, and no odor occurs from the use of Retarder RSF. The product does not significantly change the fully cured characteristics of the compound, according to the company. State-of-cure is said to be affected less than with most other retarders. (Akrochem, 255 Fountain St., Akron, OH 44304) Circle 47 on card |
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