Mixed dimer and mixed oligomer compositions are disclosed. The mixed dimer compositions comprise a monosulfonated cross-dimer or a salt thereof. The monosulfonated cross-dimer is a reaction product of (a) an alpha-olefin sulfonic acid (AOS acid); and (b) an unsulfonated olefin, an unsulfonated olefin precursor, or a functionalized olefin. The mixed oligomer compositions comprise a mono- or polysulfonated cross-oligomer or a salt thereof. The mono- or polysulfonated cross-oligomer is a reaction product of (a) an AOS acid; and (b) an unsulfonated diolefin or an unsulfonated diolefin precursor. Various methods for making the mixed dimer or oligomer compositions are described. Salts of the mixed dimer and oligomer compositions are useful surfactants for foams used in oilfield and other applications. The foams have improved high-temperature stability when compared with foams from AOS dimer acid salts.
本发明公开了混合二聚体和混合低聚物组合物。混合二聚体组合物包括单磺化交联二聚体或其盐。单磺化交联二聚体是 (a) α-烯烃
磺酸(AOS 酸);和 (b) 未磺化烯烃、未磺化烯烃前体或官能化烯烃的反应产物。混合低聚物组合物包括单磺化或多磺化交叉低聚物或其盐。单磺化或多磺化交叉低聚物是 (a) AOS 酸和 (b) 未磺化二烯烃或未磺化二烯烃前体的反应产物。本文介绍了制造混合二聚体或低聚物组合物的各种方法。混合二聚体和低聚物组合物的盐类是用于油田和其他应用中的泡沫的有用表面活性剂。与来自 AOS
二聚酸盐类的泡沫相比,这些泡沫具有更好的高温稳定性。