公开(公告)号：DE2509742A1

公开(公告)日：1976-09-23

申请号：DE2509742

申请日：1975-03-06

Applicant: BASF AG

Inventor： ENGLER PETER DIPL ING DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  STOEHR DIETER ING GRAD ,  HELFERT HERBERT DIPL CHEM DR ,  SCHARPENBERG HANS-GEORG DIPL C

IPC: C08J3/05 ,  D21H5/20

Abstract: Aq. dispersions contg. polyolefin fibrids alone or in admixt with cellulose fibres are prepd. by use as dispersing agents of imidazoline derivs. of formula (a) or their salts (b) (where R' = satd. or unsatd. 7-25C alkyl residue R2=OH, -NH2, (where R4 = H or Me; R5 = Me or Et; n=0-50 & m=0-15). R3 = H, 1-5C alkyl residue or where X = -CH2-, -CHOH-, O or S and y = 1-4; and X = Cl, Br, I or OSO3Me). Prepn. of sheet materials, e.g. papers or felts having H2O-resistant properties. Surfactants previously used in prepn. and dispersion of fibrids caused severe foaming both at the prepn. stage and during subsequent sheet making. Use of the new dispersants prevents the occurrence of foaming at both stages of the process.

公开(公告)号：DE2509740A1

公开(公告)日：1976-09-23

申请号：DE2509740

申请日：1975-03-06

Applicant: BASF AG

Inventor： ENGLER PETER DIPL ING DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  STOEHR DIETER ING GRAD ,  HELFERT HERBERT DIPL CHEM DR ,  SCHARPENBERG HANS-GEORG DIPL C

IPC: C08J3/05 ,  D21H5/20

Abstract: Method for prodn. of aq. dispersns. of polyolefin, fibrides by dispersing fibrides of aliphatic olefin polymers, opt. in admixt. with cellulose fibres, in water in the presence of a dispersing agent comprising cpds. of formula (I) or salts (b): (where R' = satd. or olefinically unsatd. C7 to C25 alkyl grp., R2 = OH, NH2, R4 = H, CH3; R5 = CH3, C2H5; n = 0 to 50; m = 0 to 15; x = Cl, Br, I or OSO3CH3). The aqs. dispersions may be used to prod. surface structures similar to paper and textiles. The dispersns. cause almost no foam in paper machines and the bonding between synthetic short fibres and those of cellulose is not disadvantageously influenced.

公开(公告)号：DE2528497A1

公开(公告)日：1977-01-20

申请号：DE2528497

申请日：1975-06-26

Applicant: BASF AG

Inventor： FIKENTSCHER ROLF DIPL CHEM DR ,  GREIF NORBERT DIPL CHEM DR ,  ENGLER PETER DIPL ING DR ,  STOEHR DIETER ING GRAD

IPC: C08J3/05 ,  D01F6/04

Abstract: The dispersions are prepd. by dispersing the fibrous prods in the presence of a dispersant. Dispersant consists of polyoxyalkylated sulphated alcohols contg. 1-6 structural units having formula -C-O- (CH2CH2O)x (CH2CHMeO) SO3M(I) (where x = 0-30; y = 1-35; M = Na, K or NH4+ and Me is methyl). The fibrid dispersions can be processed to paper or textile-like sheets and webs. Used of (I) prevents foaming and agglomeration on distn. of fibrid dispersions and in sheet formation, esp. on paper machines. Fibre-bonding and initial wet-strength of webs obtd. is improved. Small quantities of (I) are sufficient to disperse the hydrophobic fibrids in water. In an example, high density polyethylene fibrids were mixed with sulphite pulp in water. Dispersion was added to a sheet-former contg. water. 1% CH2O 2 - (CH2-CH2O)38(CH2CHMeO)4o (SO3Na)2 was used as dispersant. The sheets obtd. had wt/area 130 g/m2, initial wet strength 70g. Foaming on distn. and sheet-forming was weak. No sheet could be formed in absence of (I).

公开(公告)号：DE2509739A1

公开(公告)日：1976-09-23

申请号：DE2509739

申请日：1975-03-06

Applicant: BASF AG

Inventor： ENGLER PETER DIPL ING DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  UNTERSTENHOEFER LEO DR ,  SCHARPENBERG HANS-GEORG DIPL C

IPC: D21H5/20

Abstract: Aqueous dispersions contg. polyolefine fibrids alone or in admixt. with cellulose fibres are prepd. by use as dispersing agent of a cyclic acetal or ketal of formula Where R' = Me satd. or olefinically unsatd. 2-30C alkyl or aryl, R2 = H or similar to R', R3 = (a)alkyl or (b) R4 = H, CH2OH or (b) and x = 10-50, y = 0-50. Used for prepn. of sheet materials, e.g. papers or felts having water-resistant properties. Surfactants previously used for prepn. of fibrid dispersions caused severe foaming both during dispersion prepn. and subsequent sheet making, necessitating the addn. of antifoam agents in amts. sufficient to adversely affect the H2O-resistance of the final sheet. Use of the new dispersants prevents the occurrence of foaming at both stages of the process.

公开(公告)号：DE2440210A1

公开(公告)日：1976-03-04

申请号：DE2440210

申请日：1974-08-22

Applicant: BASF AG

Inventor： ENGLER PETER DIPL ING DR ,  FIKENTSCHER ROLF DIPL CHEM DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  UNTERSTENHOEFER LEO DR

IPC: D01F6/04 ,  D01F11/04

Abstract: Aqs. suspensions of polyolefin short fibres are prepd. using a di- or polyurethane dispersing agent of formula: (where m is 1-5, n is 10-150, X is 1-13C alkylene or arylene; and Y is the rest of a block polyether copolymer contg. at least one block A and one block B where A is of formula -(CH2CH2O)-p and p is 10-150 and B is of formula -(CH2CH2CH2-O)-r and r is 10-150). The dispersing agent causes less foaming or paper making machines and the wet strength of the paper is not badly affected. The block polyether segment Y is pref. of the form A-B-A. B-A-B, A'-B-A-B-A' or B'-A-B-A-B' where A and A' and B and B' may be the same or different. The polyolefin suspension may also contain cellulose fibres.

公开(公告)号：DE2828725A1

公开(公告)日：1980-01-03

申请号：DE2828725

申请日：1978-06-30

Applicant: BASF AG

Inventor： ZETTLER HANS DIETER DIPL ING ,  FLOHR JOACHIM DIPL ING ,  ENGLER PETER DIPL ING DR ,  SAPPOK REINHARD DIPL CHEM DR ,  SCHNEIDER WOLFGANG DIPL ING DR ,  THIELE HEINO DIPL ING DR ,  KRAUSE HANS-JOACHIM DIPL CHEM ,  HOFFMANN HELMUT

IPC: B01F23/47 ,  C09D7/80 ,  B01F3/10 ,  B01F11/00 ,  C09D7/14

Abstract: Thick liquids are blended and homogenised by continuous passage through varying shear field. Here they are subjected to a shear frequency of 5 to 1000 Hz with a shear stress of >=103 N/m2. The portion of liquid subjected to shear at any moment should not exceed a total volume of 1-40%. The high shearing follows a zone of relaxation. The ratio of through put to shearing surface is 5.103 to 25.103 kg/m2h. The viscous liquid can contain up to 80% wt. of dispersed solids, and chemical reactions or crystallisation can occur during the process.

公开(公告)号：DE2551352A1

公开(公告)日：1977-05-26

申请号：DE2551352

申请日：1975-11-15

Applicant: BASF AG

Inventor： ZETTLER HANS DIETER ,  ENGLER PETER DIPL ING DR ,  GRUHN HEINZ ING GRAD ,  IMMEL WOLFGANG DIPL ING DR ,  SCHMITT WERNER

IPC: B29C48/395 ,  B29B1/10

Abstract: Continuous prodn. of homogeneous mixts. of (A) a low viscosity component of 1-1000 Ns/m2 viscosity and (B) a high viscosity component with viscosity 102-104 Ns/m2 higher than (A), with (A) being 70-99 wt. % of the total by passing (B) through a screw extruder with L/D ratio 30-60 (40-50) and adding (A) in up to 4 separate stages, in amounts of 30-60, 80-130, 400-550 and 800-1200 wt. % w.r.t. initial amount of (B) at each stage. Used for prepn. of sealants, adhesives, rubber solns. multi-grade lubricating oils, etc. in which (B) is a polymer e.g. synthetic or natural rubber, polyiso-butylene, polyvinyl ether etc. and (A) is oil bitumen, polyisobutylene polyethylene wax, paraffin wax etc. Homogeneous mixts. free from undsipersed high-viscosity material are obtd. in a continuous process, without laborious multi-stage batch mixing using incremental addns. of (A).

公开(公告)号：DE2509741A1

公开(公告)日：1976-09-23

申请号：DE2509741

申请日：1975-03-06

Applicant: BASF AG

Inventor： ENGLER PETER DIPL ING DR ,  OPPENLAENDER KNUT DIPL CHEM DR ,  STOEHR DIETER ING GRAD ,  SCHARPENBERG HANS-GEORG DIPL C

IPC: C08J3/05 ,  D21H5/20

Abstract: Aqueous dispersion contg. polyolefin fibrids alone or in admixt. with cellulose fibres are prepd. by use of a quat. NH4 cpd. as dispersing agent having the general formula (where R' = 9-18C alkyl, R2=R3=Me, (OCH2.CH2), (OCH2CHMe)b or (O.CHMeCH2)b, X = O, S, CH2, CHOH or N.R2R3 --- Y- and Y- = Cl-, Br- or MeOSO3-, a = 1 or 2, b = 1-6 and n = 1-4). Used for prepn. of sheet materials, e.g. uppers or felts having H2O-resistant properties.