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31.发明授权Bitumen and polyvalent metal hydrocarbon oil sulfonate composition and process of making same 失效沥青和多价金属烃油磺酸盐组合物及其制备方法
公开(公告)号：US2669525A
公开(公告)日：1954-02-16
申请号：US10842849
申请日：1949-08-03
Applicant: STANDARD OIL CO
Inventor： BRANSKY DAVID W , BOLT JOHN A , STACY MAURICE W , MORRIS FELLER
IPC: C08K5/42
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