公开(公告)号：US3769265A

公开(公告)日：1973-10-30

申请号：US3769265D

申请日：1972-02-14

Applicant: BAYER AG

Inventor： GROEGLER G ,  KALLERT W ,  MEISERT E

IPC: C08G18/10 ,  C08G18/76 ,  C08G18/78 ,  C08G22/26

CPC classification number: C08G18/7831 ,  C08G18/10 ,  C08G18/7678 ,  C08G18/7818 ,  Y10S528/906 ,  C08G18/3203 ,  C08G18/40

Abstract: A PROCESS IS PROVIDED FOR THE PRODUCTION OF POLYURETHANE ELASTOMERS BY REACTING NAPHTHYLENE-1,5-DIISOCYANATE WITH A DIHYDROXY COMPOUND WHICH HAS A MOLECULAR WEIGHT OF 500 TO 6,000 TO PRODUCE A PREPOLYMER WHICH CONTAINS ISOCYANATE GROUPS AND REACTING THE PREPOLYMER WITH GLYCOLS, CHARACTERIZED IN THAT A MODIFIED NAPHTHYLENE1,5-DIISOCYANATE WHICH CONTAINS 0.02 TO 0.5 MOL, PREFERABLY 0.1 TO 0.25 MOL, OF UREA GROUPS OR BIURET GROUPS PER MOL OF NAPTHYLENE-1,5-DIISOCYANATE IS USED.

公开(公告)号：SE326036B

公开(公告)日：1970-07-13

申请号：SE237968

申请日：1968-02-23

Applicant: BAYER AG

Inventor： KALLERT W ,  IVANVI J ,  MUELLER E

IPC: C08G18/12 ,  C08G18/44 ,  C08G18/67 ,  C08G22/04

Abstract: 1,197,844. Polyurethanes. FARBENFABRIKEN BAYER A.G. 23 Feb., 1968 [28 Feb., 1967], No. 8877/68. Heading C3R. Polyurethanes are prepared by reacting a polyisocyanate, a chain lengthening agent which contains at least two hydrogen atoms which are reactive with isocyanates and a mixture of polyhydroxyl compounds of M.W. greater than 500 comprising at least 70% by weight of 1,6- hexanediol polycarbonate and not more than 30% by weight of a hydroxyl polyester synthesized from at least two glycols and one dicarboxylic acid. The polyurethanes may be prepared by a prepolymer or one-step process. Exemplified are elastomers derived from 1,5- naphthylene diisocyanate, 1,4-butane diol and mixtures of 1,6-hexanediol polycarbonate with polyesters derived from (i) adipic acid and a mixture of ethylene glycol and 1,4-butanediol, and (ii) adipic acid, 1,6-hexanediol and 2,2- dimethyl-1,3-propanediol.

公开(公告)号：SE305753B

公开(公告)日：1968-11-04

申请号：SE290665

申请日：1965-03-05

Applicant: BAYER AG

Inventor： MUELLER E ,  FREYTAG H ,  HEYDKAMP W ,  KALLERT W

IPC: C08G18/08 ,  C08G18/10 ,  C08G18/38 ,  C08G18/67 ,  C08G18/83 ,  C08G18/87

公开(公告)号：SE336467B

公开(公告)日：1971-07-05

申请号：SE1728167

申请日：1967-12-15

Applicant: BAYER AG

Inventor： MUELLER E ,  THOMA W ,  KALLERT W ,  IVANYI J

IPC: C08G18/44 ,  C08G18/56 ,  C08G18/65 ,  C08G18/67 ,  C08G22/04 ,  C08G22/08

公开(公告)号：SE332296B

公开(公告)日：1971-02-01

申请号：SE1404167

申请日：1967-10-13

Applicant: BAYER AG

Inventor： IVANVI J ,  MUELLER F ,  KALLERT W

IPC: C08G18/44 ,  C08G18/66 ,  C08G64/02 ,  C08G22/10

Abstract: 1,149,815. Polyurethanes. FARBENFABRIKEN BAYER A.G. 29 Sept., 1967 [13 Oct., 1966], No. 44436/67. Heading C3R. Polyurethanes are prepared by reacting a linear hydroxyl-group containing polycarbonate having a M.W. of 800 to 3000 which is the reaction product of 1,6-hexanediol and a diaryl carbonate, a diisocyanate and a chain lengthening agent which contains at least two reactive hydrogen atoms and has a M.W. of up to 500. The polyurethanes may be prepared by the "one-shot" or "prepolymer" processes. The polycarbonate is suitably derived from diphenylcarbonate, ditolylcarbonate or dinaphthyl carbonate. Conventional diisocyanates and conventional chain lengthening agents such as glycols, diamines and water may be used. The polyurethanes may be cross-linked by reaction with peroxides, sulphur or formaldehyde. The preparation of polycarbonates from 1,6-hexanediol and diphenyl-carbonate is described. Those described are pale waxed and have OH numbers of 81 and 56.

公开(公告)号：SE339323B

公开(公告)日：1971-10-04

申请号：SE569769

申请日：1969-04-22

Applicant: BAYER AG

Inventor： KALLERT W ,  MUEHLHAUSEN C ,  KOENIG K ,  MUELLER E

IPC: C07C243/34 ,  C08G18/10 ,  C08G18/42 ,  C08G18/44 ,  C08G18/66 ,  C08G18/67 ,  C08G22/04 ,  C08G22/10

公开(公告)号：SE326038B

公开(公告)日：1970-07-13

申请号：SE386068

申请日：1968-03-22

Applicant: BAYER AG

Inventor： MUELLER E ,  KALLERT W ,  IVANYI J ,  THOMA W

IPC: C08G18/12 ,  C08G18/44 ,  C08G22/04 ,  C08G22/08