Polybutene is an organic polymer made from a mixture of 1-butene, 2-butene, and isobutylene. C4 hydrocarbons, produced during ethylene steam cracking in oil processing, are also used as supplemental feed for polybutene. It is similar to polyisobutylene (PIB), which is produced from essentially pure isobutylene made in a C4 complex of a major refinery. The presence of isomers other than isobutylene can have several effects including: lower reactivity due to steric hindrance at the terminal carbon in, for example in polyisobutenylsuccinic anhydride (PIBSA) dispersant manufacture; and in the mole
Polybutene is an organic polymer made from a mixture of 1-butene, 2-butene, and isobutylene. C4 hydrocarbons, produced during ethylene steam cracking in oil processing, are also used as supplemental feed for polybutene. It is similar to polyisobutylene (PIB), which is produced from essentially pure isobutylene made in a C4 complex of a major refinery. The presence of isomers other than isobutylene can have several effects including: lower reactivity due to steric hindrance at the terminal carbon in, for example in polyisobutenylsuccinic anhydride (PIBSA) dispersant manufacture; and in the molecular weight–viscosity relationships of the two materials may also be somewhat different.
==Applications== Industrial product applications include sealants, adhesives, extenders for putties used for sealing roofs and windows, coatings, polymer modification, tackified polyethylene films, personal care products, and polybutene emulsions. Hydrogenated polybutenes are used in a wide variety of cosmetic preparations, such as lipstick and lip gloss. It is used as an adhesive in bird and squirrel repellents and is ubiquitous as the active agent in mouse and insect sticky traps.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).