公开(公告)号：US3900608A

公开(公告)日：1975-08-19

申请号：US29929772

申请日：1972-10-20

Applicant: BAYER AG

Inventor： DIERKES HUBERT ,  SCHONOL KARL ,  WALTER JOACHIM ,  MULLER FRIEDHELM

IPC: C09B67/42 ,  D06L3/12 ,  C09K3/00

CPC classification number: C09B67/0071 ,  D06L4/636 ,  D06L4/664

Abstract: Preparations of optical brighteners, for the whitening of fiber materials and coating mixtures for paper, which contain the solution of a dispersion brightener (a) in such a colourless organic liquid (b) which is immiscible with water, the boiling point of which is above 150*C and in which the brightener exhibits a minimum solubility of 0.3 g per litre at room temperature, with the solution optionally also containing an emulsifier (c); furthermore a process for the whitening of fiber materials and coating mixtures for paper wherein said solutions are applied.

公开(公告)号：US3907758A

公开(公告)日：1975-09-23

申请号：US50455874

申请日：1974-09-09

Applicant: BAYER AG

Inventor： SACKMANN GUNTER ,  KOLB GUNTER ,  MULLER FRIEDHELM

IPC: B01D21/01 ,  D21H17/00 ,  D21H17/37 ,  D21H17/45 ,  C08F220/00 ,  C08G75/00 ,  D21D3/00

CPC classification number: D21H17/455 ,  D21H17/00 ,  D21H17/37 ,  Y10S526/923

Abstract: Additives used for increasing the retention of fibers and fillers in the production of paper and in the treatment of sewage, the additives being copolymers of 85-95 % by weight of Mannichbases of (meth)acrylamide carrying at least one hydroxyalkyl group or being derived from heterocyclic sec. amines and 15-5 % by weight of tertiary or quaternary aminoalkyl(meth)acrylates.

Abstract translation: 用于增加纤维和填料在纸的生产和污水处理中的保留的添加剂，添加剂是85-95重量％的含有至少一个羟基烷基的（甲基）丙烯酰胺的曼尼希伯碱的共聚物或衍生自 杂环秒 胺和15-5重量％的叔或季氨基烷基（甲基）丙烯酸酯。

公开(公告)号：US3901857A

公开(公告)日：1975-08-26

申请号：US41364673

申请日：1973-11-07

Applicant: BAYER AG

Inventor： SACKMAN GUNTER ,  BALLE GERHARD ,  KOLB GUNTER ,  MULLER FRIEDHELM

IPC: B01D21/01 ,  C08F4/00 ,  C08F4/40 ,  C08F20/00 ,  C08F20/34 ,  C08F20/52 ,  C08F220/00 ,  D21H17/45 ,  C08F15/02

CPC classification number: D21H17/455 ,  C08F20/52 ,  D21H17/45 ,  Y10S526/915 ,  Y10S526/923

Abstract: High molecular weight cationic copolymers of (meth)acrylamide and tertiary or quaternary aminoalkyl(meth)acrylates are produced by copolymerization of said monomers in the presence of a redox system of a water-soluble percompound and of a compound containing at least one primary amine group or a water-soluble salt thereof in aqueous oxygen-free solution at a temperature of from 10* to 40*C.