Thiokol (polymer)
Thiokol is a trade mark for various organic polysulfide polymers.[1] Thiokol polymers are used as an elastomer in seals and sealants. The distinction between the polymers first commercialized by the Thiokol Chemical Company and subsequent polysulfide materials is often unclear.[2]
Preparation and structure
A variety of thiokols are recognized. Typically they are prepared by the combination of
1,2,3-trichloropropane. An idealized polymer is represented by this formula HS(CH2CH2OCH2OCH2CH2SS)nCH2CH2OCH2OCH2CH2SH. Thiol-terminated resins can be cured oxidatively.[2]
History and etymology
In 1838, Swiss chemists reported the preparation of hydrophobic rubbery materials by the alkylation of sodium polysulfide with 1,2-dichloroethane.solid rocket fuel, a commercial success.
Its name is a
glue
(κόλλα "kolla"), an allusion to the company's initial product.
References
- ISBN 978-0-412-60870-4.
- ^ ISBN 9780471238966.
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