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1. 发明授权

US3627830A Production of pure-n-dimethylacylamides 失效
标题翻译：纯N-二甲基酰胺的生产
公开(公告)号：US3627830A
公开(公告)日：1971-12-14
申请号：US3627830D
申请日：1969-02-03
申请人： BASF AG
发明人： KERBER HORST , HOHENSCHUTZ HEINZ , RAUCH KONRAD
IPC分类号： C08K5/20 , C07C103/00
CPC分类号： C08K5/20
摘要： Production of pure N-dimethylacylamides having from two to four carbon atoms in the acyl radical by reaction of an excess of dimethylamine with an aliphatic carboxylic acid having two to four carbon atoms at elevated temperature and distillation of the N-dimethylacylamide formed, the distillation being carried out continuously in a column. Dimethylamine and the carboxylic acid in the molar ratio from 1.1:1 to 5:1 are introduced at from 80* to 220* C. and from 0.1 to 2 atmospheres in the absence of any catalyst into a mixture of N-dimethylacylamide and its carboxylic acid, the carboxylic acid content of the mixture corresponding at least to the amount of carboxylic acid present in the azeotropic mixture of the N-dimethylacylamide and its carboxylic acid. Ndimethylacylamides are used as solvents for polymers.

2. 发明授权

US3528891A Purification of n-alkanols having four to five carbon atoms 失效
标题翻译：具有四个碳原子的N-烷醇的纯化
公开(公告)号：US3528891A
公开(公告)日：1970-09-15
申请号：US3528891D
申请日：1967-10-09
申请人： BASF AG
发明人： RAUCH KONRAD , SCHMEIDMEIR WALTER
IPC分类号： C07C29/82 , B01D3/36 , C07C27/30
CPC分类号： C07C29/82 , C07C31/12

3. 发明授权

US3496144A Production of hydrolysis-resistant polyurethane elastomers based on adipic acid; 1,6-hexanediol; 2,2,4-trimethyl-1,3-pentanediol polyesters 失效
标题翻译：基于ADIPIC生产抗水性聚氨酯弹性体; 1,6-HEXANEDIOL; 2,2,4-三甲基-1,3-苯二酚聚酯
公开(公告)号：US3496144A
公开(公告)日：1970-02-17
申请号：US3496144D
申请日：1966-11-29
申请人： BASF AG
发明人： KUNDE JOACHIM , WILHELM HANS , DOERFEL HELMUT , RAUCH KONRAD
IPC分类号： C08G18/10 , C08G18/42 , C08G22/10
CPC分类号： C08G18/4238 , C08G18/10 , Y10S528/903 , Y10S528/906 , C08G18/30

4. 发明专利

FR1501665A 未知
公开(公告)号：FR1501665A
公开(公告)日：1967-11-10
申请号：FR85230
申请日：1966-11-28
申请人： BASF AG
发明人： KUNDE JOACHIM , WILHELM HANS , DOERFEL HELMUT , RAUCH KONRAD
IPC分类号： C08G18/10 , C08G18/42

5. 发明专利

CA960696A PRODUCTION OF FORMALDEHYDE 未知
公开(公告)号：CA960696A
公开(公告)日：1975-01-07
申请号：CA117560
申请日：1971-07-06
申请人： BASF AG
发明人： HOHENSCHUTZ HEINZ , DIEM HANS , SCHMIDT JOHANNES E , MATTHIAS GUENTER , RAUCH KONRAD , ZINKE-ALLMANG HELMUT
IPC分类号： C07C45/38

6. 发明专利

CA839848A PRODUCTION OF ELASTOMERS CONTAINING URETHANE GROUPS 未知
公开(公告)号：CA839848A
公开(公告)日：1970-04-21
申请号：CA839848D
申请人： BASF AG
发明人： KUNDE JOACHIM , RAUCH KONRAD , WILHELM HANS , DOERFEL HELMUT

7. 发明专利

GB1158270A Production of Elastomers Containing Urethane Groups. 未知
公开(公告)号：GB1158270A
公开(公告)日：1969-07-16
申请号：GB5407866
申请日：1966-12-02
申请人： BASF AG
发明人： KUNDE JOACHIM , WILHELM HANS , DOERFEL HELMUT , RAUCH KONRAD
IPC分类号： C08G18/10 , C08G18/42
摘要： 1,158,270. Polyesterurethanes. BADISCHE ANILIN- & SODA-FABRIK A.G. 2 Dec., 1966 [4 Dec., 1965], No. 54078/66. Heading C3R. Polyesterurethanes are prepared by reacting an hydroxyl group containing polyester of M.W. 500 to 5,000 which has been prepared by reacting adipic acid with a mixture of 45 to 90% by weight of 1,6-hexanediol and 10 to 55% by weight of 2,2,4-trimethylpentanediol -1,3, first with a stoichiometric excess of an organic polyisocyanate followed by reaction with a chain extender which is preferably a diamine, hydrazine, a hydrazide or a glycol. If desired the reactions are carried out in the presence of an inert polar solvent such as dimethylformamide, dimethylacetamide, tetramethylurea or dimethyl sulphoxide. Up to 50% by weight of 2,2,4-trimethylpentanediol-1,3 may be replaced by 2,2-dimethylhexanediol-1,3. Suitable polyisocyanates are 4,4 1 -diphenylmethane diisocyanate; 2,4-toluylene diisocyanate; p-phenylene diisocyanate; 1,5-naphthylene diisocyanate; 1,6-hexane diisocyanate and 4,4 1 -diphenyl (thio) ether diisocyanates. The chain extenders may be ethylene diamine; propylene diamine; n-xylylene diamine; hydrazine; carbodihydrazide; adipodihydrazide; ethylene glycol and 1,4-butane diol. The resulting polymers may be used in the production of fibres or films. The preparation of polyesters from adipic acid and a diol mixture of 45 to 90% by weight of hexanediol-1,6 and 10 to 55% by weight of 2,2,4-trimethylpentanediol- 1,3 is described in the examples. In Example 1, the ratio of hexanediol-1,6 to 2,2,4-trimethylpentanediol-1,3 is 76À4: 23À6 and in Example 2 86À6: 13À4.

8. 发明专利

FR1417459A 未知
公开(公告)号：FR1417459A
公开(公告)日：1965-11-12
申请号：FR995946
申请日：1964-11-23
申请人： BASF AG
发明人： RAUCH KONRAD , SCHEIDMEIR WALTER
IPC分类号： C07C29/80

9. 发明专利

FI750372A 未知
公开(公告)号：FI750372A
公开(公告)日：1975-08-16
申请号：FI750372
申请日：1975-02-12
申请人： BASF AG
发明人： RAUCH KONRAD , KIEFER HANS , HESSE DIETER , STROHMEYER MAX , HOHENSCHUTZ HEINZ
IPC分类号： C07C53/02 , C07C51/00 , C07C51/44 , C07C67/00 , C07C
摘要： Formic acid is isolated from mixtures containing formic acid, methyl formate, methanol and water by fractional distillation, the mixture being fed into the upper half of the distillation column and 5 to 15 theoretical plates being maintained above the feed point and 10 to 25 theoretical plates below the feed point. The formic acid is withdrawn at the bottom end of the column as an azeotrope with water, the azeotrope being in the liquid state or preferably in the vapor state.

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