公开(公告)号：FI57145B

公开(公告)日：1980-02-29

申请号：FI752622

申请日：1975-09-19

Applicant: DEGUSSA

Inventor： BERNDT WILHELM

IPC: D21H19/40 ,  D21H1/22

公开(公告)号：DE2311674C3

公开(公告)日：1978-01-19

申请号：DE2311674

申请日：1973-03-09

Applicant: DEGUSSA

Inventor： BERNDT WILHELM

IPC: D21C5/02

公开(公告)号：FI68684C

公开(公告)日：1985-10-10

申请号：FI793720

申请日：1979-11-27

Applicant: DEGUSSA

Inventor： KRUEGER HORST ,  BERNDT WILHELM ,  WINK JAKOB

IPC: D21C9/16

公开(公告)号：CA1139507A

公开(公告)日：1983-01-18

申请号：CA350593

申请日：1980-04-24

Applicant: DEGUSSA

Inventor： BERNDT WILHELM ,  JUNKERMANN HELMUT ,  KRUEGER HORST ,  HAFNER VOLKER ,  WINK JAKOB

IPC: D21C11/08 ,  C02F1/72

Abstract: The intensely odorous evaporation condensates obtained in the recovery of chemicals in the decomposition of pulp are completely deodorized by the addition of hydrogen peroxide alone, i.e., without the addition of a metallic salt as the activator. They can be used immediately either as wash water in the treatment of decomposition effluents for the recovery of chemicals or passed directly into the main canal.

公开(公告)号：FI810366L

公开(公告)日：1981-08-17

申请号：FI810366

申请日：1981-02-09

Applicant: DEGUSSA

Inventor： KRUEGER HORST ,  BERNDT WILHELM ,  SUESS HANS ULRICH

IPC: D21C9/16 ,  D21C

Abstract: Cellulose is bleached by means of an organic peracid in the acid region and subsequently by means of peroxide in the alkaline region. As peracid there is employed an acid which is produced from the corresponding carboxylic acid by reaction with hydrogen peroxide in the presence of a mineral acid. The peroxide bleaching step which follows the peracid bleaching step is carried out after there is added the necessary amount of aqueous alkali solution for carrying out the peroxide bleaching step of the pulp without intermediate washing of the cellulose. A further addition of peroxide is not carried out.

公开(公告)号：FI792115A

公开(公告)日：1980-03-22

申请号：FI792115

申请日：1979-07-04

Applicant: DEGUSSA

Inventor： KRUGER HORST ,  BERNDT WILHELM ,  SUSS HANS ULRICH

IPC: D21C9/10 ,  D21C

公开(公告)号：FI752622A

公开(公告)日：1976-04-19

申请号：FI752622

申请日：1975-09-19

Applicant: DEGUSSA

Inventor： BERNDT WILHELM

IPC: D21H19/40 ,  D21H

公开(公告)号：IT1129804B

公开(公告)日：1986-06-11

申请号：IT6731880

申请日：1980-02-29

Applicant: DEGUSSA

Inventor： KUHNER GERHARD ,  BERNDT WILHELM ,  ROTHBUHR LOTHAR ,  WAGNER HANS

IPC: C04B14/02 ,  C09C1/00 ,  C09C1/56 ,  C09C1/58 ,  C09D17/00 ,  D21H21/28 ,  C09C

Abstract: Beaded carbon black is disclosed with a water content of 30 to 80% by weight which are used for coloring of paper and concrete. The product has the advantage of dust-free handling and a higher jet black color compared to conventional carbon black powder.

公开(公告)号：NO153342B

公开(公告)日：1985-11-18

申请号：NO792067

申请日：1979-06-20

Applicant: DEGUSSA

Inventor： KRUEGER HORST ,  BERNDT WILHELM ,  SUESS HANS ULRICH

IPC: D21C9/10

公开(公告)号：CA1144711A

公开(公告)日：1983-04-19

申请号：CA370899

申请日：1981-02-13

Applicant: DEGUSSA

Inventor： KRUEGER HORST ,  BERNDT WILHELM ,  SUESS HANS U

IPC: D21C9/16

Abstract: Pulps are bleached by an organic peracid in the acid range and subsequently by peroxide in the alkaline range. An acid produced from the corresponding carboxylic acid by reaction with hydrogen peroxide in the presence of a mineral acid is used as the peracid. The peroxide bleaching stage following the peracid bleaching stage is carried out after adding an amount of aqueous alkali solution required for carrying out the peroxide bleaching stage without intermediate washing of the cellulose of the pulp. No further peroxide is added.