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公开(公告)号：AU5808886A
公开(公告)日：1986-12-11
申请号：AU5808886
申请日：1986-05-30
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , LEFEVRE PIERRE
Abstract: Baths for chemical polishing of stainless steel surfaces, comprising, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid and nitric acid, ferricyanide complex ions and an additive capable of decomposing nitrous acid. The baths can be used in particular for chemical polishing of heat exchangers with a very large exchange surface.
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公开(公告)号：FI862361A
公开(公告)日：1986-12-04
申请号：FI862361
申请日：1986-06-03
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , LEFEVRE PIERRE
Abstract: Baths for chemical polishing of stainless steel surfaces, comprising, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid and nitric acid, ferricyanide complex ions and an additive capable of decomposing nitrous acid. The baths can be used in particular for chemical polishing of heat exchangers with a very large exchange surface.
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公开(公告)号：FR2476146A1
公开(公告)日：1981-08-21
申请号：FR8003771
申请日：1980-02-20
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , MARECHAL MICHEL
Abstract: A bath for removing a magnetite film from a metal surface comprises an aq. soln. of a mineral acid, alkylpyridinium chloride and an amt. of soluble cyanide complex greater than that required for reaction with all the ferric ions in the film to form an insoluble cpd. Pref. the cyanide complex is present in amt. at least 1.5 (esp. 2-10) times the required amt. The bath is useful for cleaning cast iron or steel installations e.g. carbonation columns in soda and caustic cleaner prodn., sodium bicarbonate crystallisation reactors, boilers, steam generators in nuclear plant and electrolysis cell steel cathodes having worn magnetite coatings. The bath removes magnetite films effectively, even at ambient temp., without attacking the underlying metal and will also remove lime scale and sodium bicarbonate deposits.
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公开(公告)号：NO774074A
公开(公告)日：1978-06-02
申请号：NO774074
申请日：1977-11-28
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , NOEL STEPHANE , CLERBOIS LUCIEN
CPC classification number: C08F2/005
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公开(公告)号：CH596321A5
公开(公告)日：1978-03-15
申请号：CH1248074
申请日：1974-09-13
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , LECLOUX ANDRE , DEGUELDRE LOUIS
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Patent Agency Ranking
公开(公告)号：AT101662T
公开(公告)日：1994-03-15
申请号：AT87202404
申请日：1987-12-03
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , REIGNIER MARIANNE , DUJARDIN FRANCOIS
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公开(公告)号：HUT61608A
公开(公告)日：1993-01-28
申请号：HU203091
申请日：1991-06-18
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , BARTHELEMY NATHALIE
Abstract: Baths for the chemical polishing of stainless steel surfaces which comprise a mixture of hydrochloric acid, nitric acid and phosphoric acid, a substituted or unsubstituted hydroxybenzoic acid and an amine in aqueous solution.
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公开(公告)号：CA1298762C
公开(公告)日：1992-04-14
申请号：CA509956
申请日：1986-05-26
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , LEFEVRE PIERRE
Abstract: L'invention a pour objet des bains pour le polissage chimique de surfaces en acier inoxydable, comprenant, en solution aqueuse, un mélange d'acide chlorhydrique, d'acide phosphorique et d'acide nitrique, des ions complexes ferricyanure et un additif capable de décomposer l'acide nitreux. Ces bains qui sont notamment utilisables pour le polissage chimique d'échangeurs de chaleur à très grande surface d'échange, présentent les avantages d'éviter la mise en oeuvre de multiples additifs et de réaliser des polis d'excellente qualité, spécialement dans le cas où l'aire de la surface à polir est très élevée par rapport à l'espace disponible pour le bain.
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公开(公告)号：NO168716C
公开(公告)日：1992-03-25
申请号：NO862175
申请日：1986-06-02
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , LEFEVRE PIERRE
Abstract: Baths for chemical polishing of stainless steel surfaces, comprising, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid and nitric acid, ferricyanide complex ions and an additive capable of decomposing nitrous acid. The baths can be used in particular for chemical polishing of heat exchangers with a very large exchange surface.
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公开(公告)号：NO168716B
公开(公告)日：1991-12-16
申请号：NO862175
申请日：1986-06-02
Applicant: SOLVAY
Inventor： TYTGAT DANIEL , LEFEVRE PIERRE
Abstract: Baths for chemical polishing of stainless steel surfaces, comprising, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid and nitric acid, ferricyanide complex ions and an additive capable of decomposing nitrous acid. The baths can be used in particular for chemical polishing of heat exchangers with a very large exchange surface.
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