中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

63 records (took 0.021 seconds)

    41.
    发明专利
    未知

    公开(公告)号：DE102004025861A1

    公开(公告)日：2005-12-22

    申请号：DE102004025861

    申请日：2004-05-24

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH ,  ESSER ANTON ,  KANNENGIESER DETLEF

    IPC: D21H21/14 ,  B31F1/12 ,  D21H25/00 ,  D21F11/00

    Abstract: The process for the production of crepe paper by adhesive bonding of a paper web with the aid of an adhesive comprising (i) polyethyleneimine having a molar mass Mw of from 50 000 to 2 million, (ii) reaction products of polyethyleneimine having a molar mass Mw of from 500 to 1 million with at least one C14- to C22-alkyldiketene, a monocarboxylic acid, an ester of a monocarboxylic acid or an acid chloride of a monocarboxylic acid and/or (iii) reaction products of polyalkylenepolyamines having a molar mass of from 300 to 1 million with at least one bischlorohydrogen ether or bisglycidyl ether of a polyalkylene glycol having a molecular weight MN of from 300 to 3000 to a creping cylinder, compression and removal of the crepe paper, as well as the use of the adhesives (i) to (iii) as creping assistants.

    43.
    发明专利
    未知

    公开(公告)号：DE102004013007A1

    公开(公告)日：2005-10-06

    申请号：DE102004013007

    申请日：2004-03-16

    Applicant: BASF AG

    Inventor： ESSER ANTON ,  BLUM RAINER ,  KUHN JOACHIM ,  LEDUC MARC ,  HEMEL RALF

    IPC: D21H17/34 ,  D21H17/37 ,  D21H17/56 ,  D21H21/02 ,  D21H21/10

    Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.

    METHOD FOR PRODUCING PAPER, PAPERBOARD AND CARDBOARD
    49.
    发明专利
    METHOD FOR PRODUCING PAPER, PAPERBOARD AND CARDBOARD 未知

    公开(公告)号：CA2558277C

    公开(公告)日：2013-11-12

    申请号：CA2558277

    申请日：2005-03-14

    Applicant: BASF AG

    Inventor： ESSER ANTON ,  BLUM RAINER ,  KUHN JOACHIM ,  LEDUC MARC ,  HEMEL RALF

    IPC: D21H17/34 ,  D21H17/37 ,  D21H17/56 ,  D21H21/02

    Abstract: The inventive method for producing paper, paperboard and cardboard by removing interfering substance-containing water from a paper pulp in the presence of polymers containing vinylamine units whose mean molecular mass Mw is equal or greater than one million. Said method consists in preparing, at first a high-density pulp, introducing a doses quantity at least of one type polymer which contains vinylamine units and whose mean molecular mass Mw is equal or greater than one million and a degree of hydrolysis ranges from 1 to 20 mol % in the high-density pulp, in diluting said high-density pulp by adding water until a low-density pulp is obtained and in dewatering said low-density pulp. Said invention also relates to the use of homo-or copolymers of N-vinyl carboxylic acid amides having a degree of hydrolysis ranging from 1 to 20 mol % and a mean molecular mass Mw equal or greater than one million for producing paper, paperboard and cardboard in the form of an additive to the high-density pulp containing interfering substances in order to reduce deposits formed in the sieving, pressing and drying areas of paper machines.

    50.
    发明专利
    未知

    公开(公告)号：BRPI0510569A

    公开(公告)日：2007-11-20

    申请号：BRPI0510569

    申请日：2005-05-19

    Applicant: BASF AG

    Inventor： LINHART FRIEDRICH ,  ESSER ANTON ,  KANNENGIESSER DETLER

    IPC: D21H21/14

    Abstract: The process for the production of crepe paper by adhesive bonding of a paper web with the aid of an adhesive comprising (i) polyethyleneimine having a molar mass Mw of from 50 000 to 2 million, (ii) reaction products of polyethyleneimine having a molar mass Mw of from 500 to 1 million with at least one C14- to C22-alkyldiketene, a monocarboxylic acid, an ester of a monocarboxylic acid or an acid chloride of a monocarboxylic acid and/or (iii) reaction products of polyalkylenepolyamines having a molar mass of from 300 to 1 million with at least one bischlorohydrogen ether or bisglycidyl ether of a polyalkylene glycol having a molecular weight MN of from 300 to 3000 to a creping cylinder, compression and removal of the crepe paper, as well as the use of the adhesives (i) to (iii) as creping assistants.

Patent Agency Ranking