公开(公告)号：JPS54104457A

公开(公告)日：1979-08-16

申请号：JP1147578

申请日：1978-02-06

Applicant: TORAY INDUSTRIES

Inventor： SHIBAHARA TERUROU ,  SUGII KENJI ,  IMAMURA SHINZOU

IPC: C23G1/06 ,  C23G1/10

Abstract: PURPOSE:To provide the title inhibitor contg. N-(2-hydroxyimino-cyclohexyl)- thioureas as principal components and having a good corrosion inhibiting action independently of the kinds of metal and acid. CONSTITUTION:The inhibitor contains N-(2-hydroxyimino-cyclohexyl)-thioureas, as principal components, represented by the formula (where R is 1-8 C alkyl, phenyl or benzyl). These thioureas are obtd. e.g. by reacting 2-amino-cyclohexanone oxime with thiocyanates. The inhibitor is applicable to mild steel, Al and copper. It is added in an amt. of 0.001-0.5, pref. 0.002-0.2% to a pickling soln. of mineral acids such as hydrochloric and sulfuric acids, and org. acids such as acetic and citric acids. A known inhibitor may be added. The inhibitor of this invention shows a superior corrosion inhibiting effect independently of the kind of acid.

公开(公告)号：JPS54104456A

公开(公告)日：1979-08-16

申请号：JP1147478

申请日：1978-02-06

Applicant: TORAY INDUSTRIES

Inventor： SHIBAHARA TERUROU ,  SUGII KENJI ,  IMAMURA SHINZOU

IPC: C23G1/06 ,  C23G1/10

Abstract: PURPOSE:To provide the title inhibitor contg. 4, 5, 6, 7-tetrahydro-benzimidazoline- 2-thion derivatives as principal components and having a superior corrosion inhibiting effect independently of the kinds of metal and acid. CONSTITUTION:The inhibitor contains one or more kinds of 4, 5, 6, 7-tetrahydro- benzimidazoline-2-thion derivatives, as principal components, represented by the formula (where R is H or 1-8 C alkyl and R is 1-8 C alkyl, allyl or aralkyl). A known inhibitor may be added. The inhibitor of this invention shows a superior effect independently of the kind of acid and is applicable to mild steel, Al and copper. It is added to a pickling soln. in an amt. of 0.001-0.5, pref. 0.002-0.2%. 2-mercapto-4, 5, 6, 7-tetrahydro-benzimidazole derivatives are considered to be the same cpds. as the derivatives of the formula.

公开(公告)号：JPS5288554A

公开(公告)日：1977-07-25

申请号：JP503276

申请日：1976-01-21

Applicant: TORAY INDUSTRIES

Inventor： NAKADA MINORU ,  SUGII KENJI

IPC: C23F11/04 ,  C23F11/14