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1. 发明授权

US4481345A Process for the production of combinations of organic polyisocyanates and at least partly blocked polyamines, the combinations obtainable by this process and their use for the production of lacquers, coating or sealing compositions 失效
标题翻译：用于生产有机多异氰酸酯和至少部分封闭的多胺的组合的方法，可通过该方法获得的组合及其用于生产漆，涂料或密封组合物的用途
公开(公告)号：US4481345A
公开(公告)日：1984-11-06
申请号：US583918
申请日：1984-02-27
申请人： Klaus Nachtkamp , Manfred Bock , Reinhard Halpaap , Josef Pedain
发明人： Klaus Nachtkamp , Manfred Bock , Reinhard Halpaap , Josef Pedain
IPC分类号： C09K3/10 , C08G18/10 , C08G18/32 , C08G18/65 , C09D175/00 , C09D175/02 , C09D175/04 , C08G18/38
CPC分类号： C08G18/3256 , C08G18/10
摘要： Process for the production of water-hardenable compositions of organic polyisocyanates and polyamines containing at least partly blocked amino groups present as ketimines, the combinations essentially representing mixtures and optionally reaction products containing urea groups by mixing the organic polyisocyanates with the polyamines in such quantities that the equivalent ratio of isocyanate groups to blocked and free amino groups is between about 0.9:1 and 4:1 and reacting any free amino groups present with some of the isocyanate groups in the polyisocyanate to form ureas, characterized in that the polyamines containing at least partly blocked amino groups used are mixtures comprising(a) from about 50 to 95 amine equivalent percent of organic compounds which are free from primary and secondary amino groups and which contain at least two ketimine groups corresponding to the following formula ##STR1## in which R.sup.1 represents an alkyl or cycloalkyl radical and R.sup.2 represents hydrogen or an alkyl or cycloalkyl radical or in which R.sup.1 and R.sup.2 form a cycloaliphatic hydrocarbon radical together with the two carbon atoms of the ketimine group and(b) from about 5 to 40 amine equivalent percent of organic compounds which are free from primary and secondary amino groups and which contain at least two ketimine groups of which one corresponds to the formula ##STR2## in which R.sup.1 and R.sup.2 are as defined above, the other ketimine group(s) present correspond(s) to the formula shown in (a).
摘要翻译：用于生产有机多异氰酸酯和含有至少部分封闭的胺基的多胺的水可硬化组合物作为酮亚胺存在的方法，所述组合基本上代表混合物和任选的含有尿素基团的反应产物，通过将有机多异氰酸酯与多胺混合，异氰酸酯基与封端和游离氨基的当量比为约0.9:1至4:1，并使与多异氰酸酯中存在的一些异氰酸酯基团存在的任何游离氨基反应形成脲，其特征在于，含有至少部分使用的封闭氨基是包含（a）约50至95胺当量百分比的不含伯和仲氨基并且含有至少两个对应于下式的酮亚胺基的有机化合物的混合物：其中R 1表示烷基或环烷基，R 2表示氢或a n烷基或环烷基，或其中R1和R2与酮亚胺基团的两个碳原子一起形成脂环族烃基，和（b）约5至40胺当量百分比的不含伯和仲氨基的有机化合物并且其包含至少两个酮亚胺基，其中一个对应于式（Ia）其中R 1和R 2如上所定义的式“IMAGE”，其它酮亚胺基与（a）所示的式表示。

2. 发明授权

US4777220A Process for the production of prepolymers containing isocyanate groups, prepolymers produced by this process and their use 失效
标题翻译：用于生产含异氰酸酯基团的预聚物的方法，通过该方法制备的预聚物及其用途
公开(公告)号：US4777220A
公开(公告)日：1988-10-11
申请号：US151866
申请日：1988-02-03
申请人： Reinhard Halpaap , Manfred Bock , Josef Pedain , Gerhard Klein , Dieter Arlt
发明人： Reinhard Halpaap , Manfred Bock , Josef Pedain , Gerhard Klein , Dieter Arlt
IPC分类号： C08G18/10 , C08G18/12 , C08G18/42 , C08G18/65 , C08G18/66 , C08G18/73 , C08G18/75 , C09D175/00 , C09D175/06
CPC分类号： C08G18/756 , C08G18/10 , C08G18/12 , C08G18/42 , C08G18/4202 , C08G18/664 , C08G18/735
摘要： The present invention is directed to a process for the production of prepolymers containing free tertiary isocyanate groups by reacting(a) an organic diisocyanate containing one isocyanate group attached to a primary aliphatic carbon atom and an isocyanate group attached to a tertiary aliphatic or cycloaliphatic carbon atom with(b) a polyester polyol having a molecular weight of 800 to 12,000 and a hydroxyl functionality of 2 to 6 at an NCO/OH equivalent ratio of 1.6:1 to 2:1 to provide prepolymers having a molecular weight of about 1000 to 3000 and an NCO content of about 4 to 12%.The present invention is also directed to the prepolymers containing free isocyanate groups obtained by this process and to their use for the production of polyurethane lacquers and coatings.
摘要翻译：本发明涉及通过使（a）含有连接到伯脂肪族碳原子上的一个异氰酸酯基团和连接到叔脂族或脂环族碳原子上的异氰酸酯基团的有机二异氰酸酯反应生产含游离叔异氰酸酯基团的预聚物的方法与（b）分子量为800〜12000，羟基官能度为2〜6，聚酯多元醇的NCO / OH当量比为1.6:1〜2:1，得到分子量约为1000〜3000的预聚物 NCO含量约为4〜12％。本发明还涉及通过该方法获得的含有游离异氰酸酯基团的预聚物及其用于生产聚氨酯漆和涂料的用途。

3. 发明授权

US4373081A Coating compositions and process for the production of polyurethane coatings 失效
标题翻译：涂料组合物和生产聚氨酯涂料的方法
公开(公告)号：US4373081A
公开(公告)日：1983-02-08
申请号：US325242
申请日：1981-11-27
申请人： Klaus Nachtkamp , Manfred Bock , Gerhard Mennicken , Josef Pedain
发明人： Klaus Nachtkamp , Manfred Bock , Gerhard Mennicken , Josef Pedain
IPC分类号： C08G18/00 , C08G18/10 , C08G18/42 , C08G18/80 , C09D175/00 , C09D175/06
CPC分类号： C08G18/8093 , C08G18/10 , Y10T428/31551 , Y10T428/31605
摘要： The present invention relates to thermally cross-linkable coating compositions which are liquid and stable in storage at room temperature and which contain combinations of dialkyl-malonate-blocked polyisocyanates and organic polyhydroxyl compounds as binders and, optionally, auxiliaries and additives, being characterized in that the binder comprises:(a) a polyisocyanate component containing dialkyl-malonate-blocked isocyanate groups and a content of blocked isocyanate groups, expressed as NCO, based on the weight of the polyisocyanate component excluding the weight of the blocking agent, of from about 3 to 33.6% by weight, comprising(aa) at least one dialkyl-malonate-blocked, optionally alkyl-substituted diisocyanato-diphenyl methane and/or(ab) at least one dialkyl-malonate-blocked NCO-prepolymer based on excess quantities of optionally alkyl-substituted diisocyanatodiphenyl methane and organic compounds containing at least two hydroxyl groups and(b) a polyol component having an average hydroxyl functionality of greater than 2 and a content of alcoholic hydroxyl groups of from about 1.5 to 8% by weight, comprising at least one polyester polyol in quantities corresponding to an equivalent ratio of blocked isocyanate groups to hydroxyl groups of from about 0.6:1 to 2:1.The present invention also relates to a process for the production of coatings by coating heat-resistant substrates of any type with these coating compositions and subsequently hardening the coating at about 90.degree. to 220.degree. C.
摘要翻译：本发明涉及在室温下储存的液体和稳定的可热交联的涂料组合物，其含有二烷基 - 丙二酸酯封端的多异氰酸酯和有机多羟基化合物作为粘合剂和任选的助剂和添加剂的组合，其特征在于粘合剂包括：（a）含有二烷基 - 丙二酸酯封端的异氰酸酯基团的多异氰酸酯组分和封端异氰酸酯基团的含量，基于除了封闭剂重量以外的多异氰酸酯组分的重量，表示为NCO，为约3 包含（aa）至少一种二烷基 - 丙二酸酯封端的，任选的烷基取代的二异氰酸根合二苯基甲烷和/或（ab）至少一种二烷基 - 丙二酸酯封闭的NCO-预聚物，烷基取代的二异氰酸二苯二甲烷和含有至少两个羟基的有机化合物和（b）具有av的多元醇组分包括至少一种聚酯多元醇，其数量对应于封端异氰酸酯基与羟基的当量比为约0.6:1，其中羟基官能度大于2，醇羟基含量为约1.5至8重量％至2：1。本发明还涉及通过用这些涂料组合物涂覆任何类型的耐热基材并随后在约90℃至220℃硬化涂层来生产涂料的方法。

4. 发明授权

US6100326A Use of special isocyanates for preparing aqueous polyurethane coatings 失效
标题翻译：使用特殊的异氰酸酯制备水性聚氨酯涂料
公开(公告)号：US6100326A
公开(公告)日：2000-08-08
申请号：US225762
申请日：1999-01-05
申请人： Frank Richter , Michael Sonntag , Reinhard Halpaap , Manfred Bock
发明人： Frank Richter , Michael Sonntag , Reinhard Halpaap , Manfred Bock
IPC分类号： C08G18/00 , C08G18/10 , C08G18/70 , C08G18/72 , C08G18/73 , C08G18/79 , C09D175/04 , C08J3/00 , C08K3/20 , C08L75/00
CPC分类号： C08G18/73 , C08G18/706 , C08G18/722 , C08G18/725 , C09D175/04
摘要： The invention relates to the use of 4-isocyanatomethyloctane 1,8-diisocyanate isocyanatononane, (TIN) and TIN-containing mixtures for preparing polyurethane lacquers and coatings which can be applied from an aqueous medium.
摘要翻译：本发明涉及4-异氰酸甲酯甲辛烷-1,8-二异氰酸酯异氰酸钠盐（TIN）和含TIN的混合物用于制备可从水性介质中施用的聚氨酯漆和涂料的用途。

5. 发明授权

US5510444A Powder coating compositions and their use for coating heat-resistant substrates 失效
标题翻译：粉末涂料组合物及其用于涂覆耐热基材的用途
公开(公告)号：US5510444A
公开(公告)日：1996-04-23
申请号：US390393
申请日：1995-02-16
申请人： Reinhard Halpaap , Hans-Ulrich Meier-Westhues , Christian Wamprecht , Manfred Bock , Wolfgang Schultz , Lothar Kahl
发明人： Reinhard Halpaap , Hans-Ulrich Meier-Westhues , Christian Wamprecht , Manfred Bock , Wolfgang Schultz , Lothar Kahl
IPC分类号： C09D5/03 , C08G18/38 , C08G18/40 , C08G18/42 , C08G18/62 , C08G18/64 , C08G18/79 , C08G18/80 , C09D5/46 , C09D175/00 , C09D175/04
CPC分类号： C08G18/6415 , C08G18/3831 , C08G18/40 , C08G18/42 , C08G18/6229 , C08G18/6258 , C08G18/792 , C08G18/8009 , C08G2150/20 , Y10T428/31547
摘要： A powder coating composition for the production of non-yellowing, flexible coatings which contains a mixture of a polyisocyanate component which contains one or more lacquer polyisocyanates having free (unblocked) isocyanate groups bound to primary and/or secondary carbon atoms and a polyol component containing one or more polyhydroxyl compounds selected from polyhydroxy polyurethanes, polyhydroxy polyacrylates and polyhydroxy polyesters, wherein at least 50% of the hydroxyl groups are bound to secondary or tertiary carbon atoms; and its use for coating heat-resistant substrates, in particular as clear coating compositions for automobiles.
摘要翻译：一种用于生产非黄变柔性涂层的粉末涂料组合物，其含有多异氰酸酯组分的混合物，所述多异氰酸酯组分含有一个或多个具有与伯和/或次碳原子结合的游离（未封端）异氰酸酯基团的多元醇多异氰酸酯和含有一种或多种选自多羟基聚氨酯，多羟基聚丙烯酸酯和多羟基聚酯的多羟基化合物，其中至少50％的羟基与仲或叔碳原子结合; 以及其用于涂覆耐热基材，特别是作为汽车的透明涂料组合物的用途。

6. 发明授权

US5981653A Process for the production of aqueous stoving coating compositions 失效
标题翻译：用于生产水性烘烤涂料组合物的方法
公开(公告)号：US5981653A
公开(公告)日：1999-11-09
申请号：US844815
申请日：1997-04-22
申请人： Oswald Wilmes , Lothar Kahl , Bernd Klinksiek , Christian Wamprecht , Manfred Bock , Klaus Nachtkamp
发明人： Oswald Wilmes , Lothar Kahl , Bernd Klinksiek , Christian Wamprecht , Manfred Bock , Klaus Nachtkamp
IPC分类号： C08J3/02 , B01J13/04 , C08G18/08 , C08G18/63 , C08G18/79 , C08G18/80 , C08J3/03 , C08J3/12 , C09D5/46 , C09D175/04 , C08G18/40 , C08L75/04
CPC分类号： C08J3/03 , C08G18/0866 , C08G18/631 , C08G18/792 , C08G18/8061 , C08G2150/20 , C08J2375/04
摘要： The present invention relates to a process for the production of aqueous dispersions which form powder coatings at room temperature, have an average particle size of 0.1 to 10 .mu.m, contain polyols and blocked polyisocyanate crosslinking agents, and, after stoving, yield coatings with improved water and solvent resistance, in particular on metallic substrates.
摘要翻译：本发明涉及一种在室温下形成粉末涂料的水性分散体的制备方法，平均粒径为0.1-10μm，含有多元醇和封端的多异氰酸酯交联剂，并且在烘烤后，产率增加了耐水和耐溶剂性，特别是在金属基材上。

7. 发明授权

US5852101A Powder coating compositions and their use for coating heat-resistant substrates 失效
标题翻译：粉末涂料组合物及其用于涂覆耐热基材的用途
公开(公告)号：US5852101A
公开(公告)日：1998-12-22
申请号：US958227
申请日：1997-10-27
申请人： Reinhard Halpaap , Christian Wamprecht , Hans-Joachim Kreuder , Wolfgang Schultz , Manfred Bock , Rainer Rettig
发明人： Reinhard Halpaap , Christian Wamprecht , Hans-Joachim Kreuder , Wolfgang Schultz , Manfred Bock , Rainer Rettig
IPC分类号： C08G18/62 , C08G18/75 , C08G18/78 , C08G18/80 , C09D5/03 , C09D5/46 , C09D175/00 , C09D175/04 , C08J3/00 , C08F8/30 , C08K3/00 , C08L75/00
CPC分类号： C08G18/8074 , C08G18/6229 , C08G18/6254 , C08G18/758 , C08G18/8016 , C08G2150/20 , Y10T428/31551
摘要： The present invention relates to a powder coating composition for the production of non-yellowing flexible coatings which is solid below 30.degree. C. and liquid above 120.degree. C. and contains a mixture of A) a polyisocyanate component which i) has a content of blocked isocyanate groups (expressed as NCO, molecular weight=42) of 3.0 to 14.0% by weight, ii) has a functionality, based on the blocked isocyanate groups, of 1.9 to 2.3 and iii) and contains at least one .epsilon.-caprolactam-blocked polyisocyanate based on the reaction product of 4,4'-diisocyanatodicyclohexyl methane with a polyol component having an average molecular weight of 90 to 400 and containing at least 50% by weight, based on the weight of the polyol component, of one or more (cyclo)aliphatic diols containing 4 to 12 carbon atoms, B) a polyol component containing at least one polyhydroxy polyacrylate having an OH number of 40 to 120 and C) an organotin catalyst for the reaction between hydroxyl groups and blocked isocyanate groups, wherein components A) and B) are present in quantities which correspond to an equivalent ratio of blocked polyisocyanate groups to hydroxyl groups of 0.5:1 to 1.2:1. The present invention also relates to the a heat-resistant substrate which is coated with this powder coating composition.
摘要翻译：本发明涉及一种粉末涂料组合物，用于生产低于30℃的固体和高于120℃的液体的非黄变柔性涂层，并且含有A）多异氰酸酯组分的混合物，i）多异氰酸酯组分的含量封闭的异氰酸酯基团（表示为NCO，分子量= 42）为3.0至14.0重量％，ii）基于封端异氰酸酯基团的官能度为1.9至2.3和iii）并且包含至少一个ε-己内酰胺 - 封端的多异氰酸酯基于4,4'-二异氰酸二环己基甲烷与平均分子量为90至400的多元醇组分的反应产物和基于多元醇组分重量的至少50重量％的一种或多种含有4至12个碳原子的（环）脂族二醇，B）含有至少一种羟值为40至120的多羟基聚丙烯酸酯的多元醇组分，C）用于羟基与封端异氰酸酯反应的有机锡催化剂 te基团，其中组分A）和B）以对应于封端多异氰酸酯基团与羟基的当量比为0.5:1至1.2:1的量存在。本发明还涉及涂覆有该粉末涂料组合物的耐热基材。

8. 发明授权

US5208291A Powder coating compositions, a process for their production and their use for coating heat-resistant substrates 失效
标题翻译：粉末涂料组合物，其制备方法及其用于涂覆耐热基材的方法
公开(公告)号：US5208291A
公开(公告)日：1993-05-04
申请号：US941498
申请日：1992-09-08
申请人： Christian Wamprecht , Reinhard Halpaap , Hans-Joachim Kreuder , Manfred Bock , Jurgen Meixner , Rainer Rettig , Wolfgang Schultz
发明人： Christian Wamprecht , Reinhard Halpaap , Hans-Joachim Kreuder , Manfred Bock , Jurgen Meixner , Rainer Rettig , Wolfgang Schultz
IPC分类号： B05D7/24 , C08G18/62 , C08G18/78 , C08G18/79 , C08G18/80 , C08J3/12 , C09D5/03 , C09D5/46 , C09D175/00 , C09D175/04
CPC分类号： C08G18/6229 , C08G18/6254 , C08G18/78 , C08G18/7831 , C08G18/792 , C08G18/8077 , C08G2150/20 , Y10S524/904
摘要： The present invention relates to a process for the production of powder coating compositions having a glass transition temperature of 20.degree. to 80.degree. C. bya) homogeneously dissolving in an inert solvent or solvent mixture having a boiling point or range between 50.degree. and 150.degree. C.A) a polyol component having a hydroxyl value of 30 to 155 and a glass transition temperature of 30.degree. to 120.degree. C. and containing at least one hydroxy-functional copolymer of olefinically unsaturated monomers,B) a polyisocyanate component containing blocked isocyanate groups, having a glass transition temperature of -45.degree. to +45.degree. C. and containing at least one ketoxime-blocked polyisocyanate andC) a catalyst component containing at least one catalyst for the reaction between blocked isocyanate groups and hydroxyl groups components, wherein components A) and B) are present in an amount which is sufficient to provide an equivalent ratio of blocked isocyanate groups to hydroxyl groups of 0.5:1 to 1.5:1,b) freeing the resulting solution from the solvent andc) simultaneously and/or subsequently converting the solid obtained into powder form.The present invention also relates to the powder coating compositions obtained by this process and their use for the production of coatings of heat-resistant substrates.
摘要翻译：本发明涉及通过以下方法生产具有玻璃化转变温度为20-80℃的粉末涂料组合物的方法：a）均匀溶于沸点或范围为50至150℃的惰性溶剂或溶剂混合物中 A）多元醇组分，其羟基值为30至155，玻璃化转变温度为30至120℃，并含有至少一种烯属不饱和单体的羟基官能共聚物，B）含有封端的多异氰酸酯组分异氰酸酯基团，玻璃化转变温度为-45℃至+ 45℃，并含有至少一种酮肟封端的多异氰酸酯和C）含有至少一种用于封端异氰酸酯基团和羟基组分之间反应的催化剂的催化剂组分，其中组分A）和B）以足以提供封端异氰酸酯基与羟基的当量比为0.5:1至1的量存在 b）将所得溶液从溶剂中释放，以及c）同时和/或随后将获得的固体转化为粉末形式。本发明还涉及通过该方法获得的粉末涂料组合物及其用于生产耐热基材的涂层的用途。

9. 发明授权

US5852106A Coating compositions for glass substrates 失效
标题翻译：玻璃基材用涂料组合物
公开(公告)号：US5852106A
公开(公告)日：1998-12-22
申请号：US848948
申请日：1997-05-01
申请人： Oswald Wilmes , Beate Baumbach , Klaus Nachtkamp , Eberhard Konig , Randall Dearth , Manfred Bock , Wolfhart Wieczorrek
发明人： Oswald Wilmes , Beate Baumbach , Klaus Nachtkamp , Eberhard Konig , Randall Dearth , Manfred Bock , Wolfhart Wieczorrek
IPC分类号： C03C17/32 , C08G18/08 , C08G18/12 , C08G18/64 , C08G18/75 , C08G18/79 , C08G18/80 , C09D175/04 , C08J3/00 , B32B27/00 , C08K3/20 , C08L75/00
CPC分类号： C08G18/807 , C03C17/322 , C08G18/0819 , C08G18/12 , C08G18/758 , C08G18/8058 , Y10T428/31551
摘要： The present invention relates to aqueous polyurethane coating compositions wherein the binder contains a) a polyol component, which is soluble or dispersible in water and is the reaction product of a polyisocyanate component containing 50 to 100 wt. % of 4,4'-diisocyanatodicyclohexylmethane, a polyol component containing one or more polyether polyols and having an OH number of 25 to 350 mg KOH/g solids and an isocyanate-reactive component containing at least one group capable of salt formation and b) a polyisocyanate component, which is soluble or dispersible in water, has blocked isocyanate groups and is the reaction product of a polyisocyanate having an isocyanurate group content of 2 to 30 wt. %, a reversible, monofunctional blocking agent for isocyanate groups, a nonionic hydrophilic component and a stabilizing component which has 1 to 2 hydrazide groups and a molecular weight of 70 to 300, wherein the equivalent ratio of blocked isocyanate groups of component b) to hydroxyl groups of component a) is at least 0.8:1. The present invention also relates to the use of the binders for coating any glass surfaces, especially glass bottles.
摘要翻译：本发明涉及水性聚氨酯涂料组合物，其中粘合剂包含a）多元醇组分，其可溶于或分散于水中，并且是含有50-100重量份的多异氰酸酯组分的反应产物。％的4,4'-二异氰酸根合二环己基甲烷，含有一种或多种聚醚多元醇并且OH数为25至350mg KOH / g固体的多元醇组分和含有至少一个能够形成盐的基团的异氰酸酯反应性组分，以及b）可溶于或分散于水中的多异氰酸酯组分具有封闭的异氰酸酯基团，并且是异氰脲酸酯基团含量为2-30重量％的多异氰酸酯的反应产物。％，用于异氰酸酯基团的可逆的单官能封端剂，非离子亲水组分和具有1至2个酰肼基和分子量为70至300的稳定组分，其中组分b）的封端异氰酸酯基团与羟基的当量比组分a）的组分至少为0.8:1。本发明还涉及粘合剂用于涂覆任何玻璃表面，特别是玻璃瓶的用途。

10. 发明授权

US4146559A Cycloaliphatic diamines 失效
标题翻译：循环泵
公开(公告)号：US4146559A
公开(公告)日：1979-03-27
申请号：US827767
申请日：1977-08-25
申请人： Manfred Bock , Rudolf Braden , Josef Pedain
发明人： Manfred Bock , Rudolf Braden , Josef Pedain
IPC分类号： C07C215/14 , C07C67/00 , C07C209/00 , C07C209/26 , C07C209/52 , C07C211/36 , C07C213/00 , C07C217/08 , C07D295/02 , C08G18/10 , C08G18/32 , C07C87/40 , C07C87/28
CPC分类号： C07D295/02 , C08G18/10 , C08G18/3234
摘要： Compounds are disclosed which correspond to the general formula: ##STR1## in which N AND M WHICH ARE THE SAME OR DIFFERENT HAVE THE VALUES 0, 1 OR 2,R, r.sub.1 and R.sub.2 which are the same or different, represent hydrogen or CH.sub.3 -groupsAnd either(a) R.sub.3 and R.sub.5 represent hydrogen and R.sub.4 and R.sub.6 represent hydrogen, a C.sub.1 -C.sub.18 alkyl group, or a cycloalkyl group with 5 to 8 carbon atoms,Or(b) R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently represent C.sub.1 -C.sub.18 alkyl groups, or cycloalkyl groups containing 5 to 8 carbon atoms,Or(c) R.sub.3 and R.sub.4 together and R.sub.5 and R.sub.6 together, in conjunction with the nitrogen atom, form a heterocyclic C.sub.4 -C.sub.6 ring which may be interrupted by oxygen and/or nitrogen and which may be substituted by alkyl groups and/or hydroxyl alkyl groups with 1 to 4 carbon atoms.These compounds are produced by hydrogenating the corresponding diketones in the presence of ammonia or a primary or secondary aliphatic or cycloaliphatic amine.

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