公开(公告)号：FR2582675A1

公开(公告)日：1986-12-05

申请号：FR8508440

申请日：1985-06-03

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  LEFEVRE PIERRE

IPC: C23F3/00 ,  C23F3/06 ,  C23F1/28

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.

公开(公告)号：CA1213398A

公开(公告)日：1986-10-28

申请号：CA259250

申请日：1976-08-17

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  CLERBOIS LUCIEN ,  NOEL STEPHANE

IPC: C08F14/00 ,  C08F2/00 ,  C08F2/44 ,  C08F14/06

Abstract: : La présente invention concerne un procédé pour la polymérisation dans un réacteur en dispersion aqueuse du chlorure de vinyle à l'intervention d'initiateurs de polymérisation radicalaire oléosolubles. On utilise comme inhibiteurs de croûtage des ions bromures ou iodures provenant de la dissociation dans l'eau des bromures et des iodures des métaux alcalins.

公开(公告)号：PT82125A

公开(公告)日：1986-04-01

申请号：PT8212586

申请日：1986-03-03

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  LEFEVRE PIERRE ,  MARECHAL MICHEL

IPC: C23F3/06 ,  C23F3/00 ,  C23F1/00 ,  C23G1/00

Abstract: The chemical polishing of steel surfaces is carried out by bringing the latter into contact with a bath comprising, in aqueous solution, hydrochloric acid, phosphoric acid, nitric acid and ferricyanide complex ions. The invention is in particular applicable to the polishing of vessels of large dimensions made from stainless steel alloyed with chromium and with nickel.

公开(公告)号：CA1101490A

公开(公告)日：1981-05-19

申请号：CA298295

申请日：1978-03-03

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  DEGOLS ALBERT

IPC: G01N27/00

Abstract: Process and device for monitoring the corrosive, erosive and/or encrusting nature of a liquid with respect to a metallic installation. The process comprises the steps of immersing a metallic probe into the liquid whereby a double layer is created at the interface between the probe and the liquid; immersing an auxiliary electrode into the liquid near the probe so that the auxiliary electrode is electrically insulated from the probe and measuring the differential capacitance of the double layer and the electrical resistance between the probe and the auxiliary electrode, which are representative of the surface condition of the probe. The device comprise an electrochemical measuring cell comprising the probe and the auxiliary electrode, and a component connected to the cell for measuring the differential capacitance and the electrical resistance previously mentionned.

公开(公告)号：FR2457315A1

公开(公告)日：1980-12-19

申请号：FR7913556

申请日：1979-05-25

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  ROCHUS RAYMOND ,  MARECHAL MICHEL

IPC: C23F1/18 ,  C23F3/04 ,  C23F3/06 ,  C09K13/06

公开(公告)号：AU3104377A

公开(公告)日：1979-06-28

申请号：AU3104377

申请日：1977-11-29

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  NOEL STEPHANE ,  CLERBOIS LUCIEN

IPC: C08F14/00 ,  C08F2/00 ,  C08F2/18 ,  C08F14/06

Abstract: Process for polymerizing in a reactor containing a polymerization mixture, and in aqueous suspension, a halogen-containing vinyl monomer, using a lipo-soluble initiator which generates free radicals, in the presence of an effective amount of an inhibitor of crust formation derived from a sulfur-containing organic compound, wherein the inhibitor of crust formation consists of anions derived from at least one arylsulfonic acid.

公开(公告)号：PT67337B

公开(公告)日：1979-04-26

申请号：PT6733777

申请日：1977-11-29

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  NOEL STEPHANE ,  CLERBOIS LUCIEN

IPC: C08F2/18

公开(公告)号：FI773580A

公开(公告)日：1978-06-02

申请号：FI773580

申请日：1977-11-25

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  NOEL STEPHANE ,  CLERBOIS LUCIEN

IPC: C08F14/00 ,  C08F2/00 ,  C08F2/18 ,  C08F

Abstract: Process for polymerizing in a reactor containing a polymerization mixture, and in aqueous suspension, a halogen-containing vinyl monomer, using a lipo-soluble initiator which generates free radicals, in the presence of an effective amount of an inhibitor of crust formation derived from a sulfur-containing organic compound, wherein the inhibitor of crust formation consists of anions derived from at least one arylsulfonic acid.

公开(公告)号：FI762308A

公开(公告)日：1977-02-19

申请号：FI762308

申请日：1976-08-12

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  CLERBOIS LUCIEN ,  NOEL STEPHANE

IPC: C08F14/00 ,  C08F2/00 ,  C08F2/44 ,  C08F

公开(公告)号：ES2062977T3

公开(公告)日：1995-01-01

申请号：ES87202404

申请日：1987-12-03

Applicant: SOLVAY

Inventor： TYTGAT DANIEL ,  REIGNIER MARIANNE ,  DUJARDIN FRANCOIS

IPC: C23G1/08 ,  C23F1/28 ,  C23F3/00 ,  C23F3/06

Abstract: Baths comprising, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid, nitric acid and sulphosalicylic acid and at least one abietic compound.