公开(公告)号：DE19648716A1

公开(公告)日：1997-12-11

申请号：DE19648716

申请日：1996-11-25

Applicant: HOECHST AG

Inventor： STANKOWIAK ACHIM DR ,  BECKER WILFRIED DR

IPC: C07C53/06 ,  C07C53/10 ,  C09K3/18

Abstract: The invention relates to a defrosting agent comprising substantially: (a) 87 to 99.45 wt % of an alkali metal acetate or an alkali metal formate or a mixture thereof; (b) 0.5 to 10 wt % of an alkali metal silicate; and (c) 0.05 to 3 wt % of an alkali metal phosphate. Said agent can be used in the form of a solid (powder, granules and the like) or in the form an aqueous solution, and provides a short thawing period and protection against corrosion, in particular with respect to magnesium.

公开(公告)号：DE19546856C1

公开(公告)日：1997-06-26

申请号：DE19546856

申请日：1995-12-15

Applicant: HOECHST AG

Inventor： BECKER WILFRIED DR

IPC: G01N33/28 ,  G01N33/26

Abstract: The water content of the hydraulic fluid under test is first adjusted to between 3 and 20 wt % relative to the water-containing fluid and the water-containing fluid is then mixed with at least an equal volume of tetrahydrofurane or monoethylene glycol dimethyl ether. The formation or non-formation of precipitate is then determined.

公开(公告)号：DE4342447C1

公开(公告)日：1994-10-13

申请号：DE4342447

申请日：1993-12-13

Applicant: HOECHST AG

Inventor： BECKER WILFRIED DR

IPC: C07C67/08 ,  C07C69/653 ,  C07C67/54

Abstract: Fluorinated alcohols which are sparingly soluble in water can be esterified directly with (meth)acrylic acid while removing the water of reaction by using an excess of the alcohol as an entrainer for the water.

公开(公告)号：DE4215836A1

公开(公告)日：1993-11-18

申请号：DE4215836

申请日：1992-05-14

Applicant: HOECHST AG

Inventor： BECKER WILFRIED DR

IPC: C11D7/30 ,  C11D7/26 ,  C11D7/28 ,  C11D7/50

公开(公告)号：ES2085088T3

公开(公告)日：1996-05-16

申请号：ES93115932

申请日：1993-10-02

Applicant: HOECHST AG

Inventor： GISSER ALFONS ,  VON WERNER KONRAD DR ,  NAUMANN JOACHIM DIPL-ING ,  DEBRODT HEINER DR ,  BECKER WILFRIED DR

IPC: C09K5/08 ,  C09K5/04

公开(公告)号：DE4218966A1

公开(公告)日：1993-12-16

申请号：DE4218966

申请日：1992-06-10

Applicant: HOECHST AG

Inventor： BECKER WILFRIED DR

IPC: C11D7/30 ,  C11D7/50 ,  C11D7/60 ,  C23G5/032 ,  C11D7/26

公开(公告)号：DE4410551A1

公开(公告)日：1995-09-28

申请号：DE4410551

申请日：1994-03-26

Applicant: HOECHST AG

Inventor： BECKER WILFRIED DR ,  WERNER KONRAD VON DR

IPC: C07C17/26 ,  C07C17/361 ,  C07C19/08

Abstract: The prodn. of perfluoroalkyl iodides of formula (I: n 4) with cpds. of formula (I: n

公开(公告)号：DE59301504D1

公开(公告)日：1996-03-07

申请号：DE59301504

申请日：1993-10-02

Applicant: HOECHST AG

Inventor： GISSER ALFONS ,  VON WERNER KONRAD DR ,  NAUMANN JOACHIM DIPL ING ,  DEBRODT HEINER DR ,  BECKER WILFRIED DR

IPC: C09K5/08 ,  C09K5/04

公开(公告)号：DE4342448C1

公开(公告)日：1994-09-08

申请号：DE4342448

申请日：1993-12-13

Applicant: HOECHST AG

Inventor： BECKER WILFRIED DR

IPC: C07C67/08 ,  C07C69/653 ,  C07C67/54 ,  C07C67/62

Abstract: The direct esterification of acrylic acid and methacrylic acid with fluorinated alcohols is carried out in the presence of a fluorinated ether as an entraining agent for the water of reaction, which dissolves the starting materials, but is immiscible with water.

公开(公告)号：DE4305239A1

公开(公告)日：1994-08-25

申请号：DE4305239

申请日：1993-02-20

Applicant: HOECHST AG

Inventor： BECKER WILFRIED DR

IPC: C09K5/08 ,  C07C43/12 ,  C09K5/04 ,  F25B1/00 ,  H01L23/427 ,  H01L23/473 ,  F28F23/00 ,  H01L23/42