Definition: The term "unsulphonated" refers to a material that does not contain any of the common unsaturated hydrocarbons found in natural products such as ethyl, propyl, and butyl. These are typically considered unsaturated because they do not have saturated carbon atoms like ethylene (C2H4), propene (C5H10), or butane (C4H10). Unsulphonated materials are often used in the production of synthetic polym
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