公开(公告)号：US4243797A

公开(公告)日：1981-01-06

申请号：US971187

申请日：1978-12-20

申请人： Harro Petersen ,  Kurt Fischer ,  Hans Klug ,  Werner Trimborn ,  Horst Schmidt

发明人： Harro Petersen ,  Kurt Fischer ,  Hans Klug ,  Werner Trimborn ,  Horst Schmidt

IPC分类号： C08G12/00 ,  C08G12/02 ,  C08G12/10 ,  C08G12/12 ,  C08G12/14 ,  C09D161/20 ,  C09D161/24

CPC分类号： C08G12/12 ,  C09D161/24

摘要： A process for the preparation of soft and hard resins, and their use in surface-coating binders are disclosed. According to the invention, soft and hard resins are prepared from a urea, formaldehyde and a CH-acidic aldehyde by reacting a urea of the general formula (I) or (II) ##STR1## where R.sup.1 and R.sup.2 are hydrogen or identical or different alkyl, A is alkylene and X is oxygen or sulfur, with formaldehyde and a CH-acidic aldehyde of the general formula (III) ##STR2## where R.sup.3 and R.sup.4 are identical or different alkyl, aryl or alkylaryl wherein the urea, formaldehyde and CH-acidic aldehyde are employed in a mole ratio of from 1:2:2 to 1:4:4, at from 60.degree. to 150.degree. C., in the presence of an acid and in the presence or absence of a solvent and/or diluent, and then treating the product with a base in an anhydrousmedium.

摘要翻译： 公开了一种用于制备软和硬树脂的方法及其在表面涂层粘合剂中的用途。 根据本发明，通过使通式（I）或（II）的脲与（II）的脲反应，由尿素，甲醛和CH-酸性醛制备软和硬的树脂，其中 R 1和R 2是氢或相同或不同的烷基，A是亚烷基，X是氧或硫，与通式（III）的甲醛和CH-酸醛形成，其中R 3和R 4是相同或不同的烷基，芳基 或烷基芳基，其中使用的脲，甲醛和CH-酸性醛的摩尔比为1:2:2至1:4:4，在60-150℃，在酸的存在下， 溶剂和/或稀释剂的存在或不存在，然后用无水介质中的碱处理产物。

公开(公告)号：US4220751A

公开(公告)日：1980-09-02

申请号：US969664

申请日：1978-12-15

申请人： Harro Petersen ,  Kurt Fischer ,  Hans Klug ,  Werner Trimborn

发明人： Harro Petersen ,  Kurt Fischer ,  Hans Klug ,  Werner Trimborn

IPC分类号： C08G12/00 ,  C08G12/02 ,  C08G12/12 ,  C09D161/20 ,  C09D161/24

CPC分类号： C08G12/12 ,  C09D161/24

摘要： A process for the preparation of soft and hard resins, and their use in surface-coating binders.According to the invention, soft and hard resins are prepared from a urea and a CH-acidic aldehyde by reacting a urea of the general formula (I) ##STR1## where X is oxygen or sulfur and R.sup.1 and R.sup.2 are hydrogen or identical or different alkyl, aryl or aralkyl, or may be an alkyleneurea radical, with at least 2 moles of a CH-acidic aldehyde of the general formula (II) ##STR2## where R.sup.3 is hydrogen and R.sup.4 is alkyl, aryl or aralkyl, or R.sup.3 and R.sup.4 are identical or different alkyl, aryl or aralkyl, in the presence of a strong acid, to give a condensation product, and then treating the latter with a base in an anhydrous medium.These soft and hard resins are used, in combination with other film-forming agents, as surface-coating binders.

摘要翻译： 用于制备软和硬树脂的方法及其在表面涂层粘合剂中的应用。 根据本发明，通过使通式（I）的脲（I）其中X是氧或硫，R 1和R 2是氢或通式 具有至少2摩尔的通式（II）的II型的酸式醛，其中R 3是氢和R 4是烷基，芳基，芳基或芳烷基，或可以是亚烷基脲基， 或芳烷基，或者R3和R4是相同或不同的烷基，芳基或芳烷基，在强酸存在下，得到缩合产物，然后用无水介质中的碱处理后者。 这些软和硬树脂与其它成膜剂一起用作表面涂层粘合剂。