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    Modified melamine-formaldehyde resins
    31.
    发明授权
    Modified melamine-formaldehyde resins 失效
    改性三聚氰胺 - 甲醛树脂

    公开(公告)号：US5322915A

    公开(公告)日：1994-06-21

    申请号：US910382

    申请日：1992-07-08

    申请人： Juergen Weiser ,  Wolfgang Reuther ,  Rolf Fikentscher ,  Wolfgang Fath ,  Heinz Berbner ,  Hans D. Zettler ,  Heinz Voelker

    发明人： Juergen Weiser ,  Wolfgang Reuther ,  Rolf Fikentscher ,  Wolfgang Fath ,  Heinz Berbner ,  Hans D. Zettler ,  Heinz Voelker

    IPC分类号： C08G14/09 ,  C08G14/06 ,  C08G14/10

    CPC分类号： C08G14/10

    摘要： A condensation polymer, obtainable by condensation of a mixture containing, as chief components,(A) from 90 to 99.9% molar of a mixture substantially consisting of(a) from 30 to 99% molar of melamine and(b) from 1 to 70% molar of a substituted melamine of the general formula I ##STR1## in which X, X', and X" are selected from the group consisting of --NH.sub.2, --NHR, and --NRR', and only one or two of X, X', and X" denote(s) --NH.sub.2, and R and R' are selected from the group consisting of hydroxy-C.sub.2 -C.sub.10 -alkyl, hydroxy-C.sub.2 -C.sub.4 -alkyl-(oxa-C.sub.2 -C.sub.4 -alkyl).sub.n, where n is an integer from 1 to 5, and amino-C.sub.2 -C.sub.12 -alkyl, or mixtures of melamines I, and(B) from 0.1 to 10% molar, based on (A) and (B), of unsubstituted phenols or phenols substituted by radicals selected from the group consisting of C.sub.1 -C.sub.9 -alkyl and hydroxy, or of C.sub.1 -C.sub.4 -alkanes substituted by two or three phenol groups, di(hydroxyphenyl)sulfones, or mixtures of said phenols,with formaldehyde or formaldehyde-liberating compounds, the molar ratio of melamine to formaldehyde ranging from 1:1.15 to 1:4.5.

    摘要翻译： 缩合聚合物，其可通过以主要组分（A）为90至99.9％摩尔的混合物缩合获得，该混合物基本上由（a）30至99％摩尔的三聚氰胺和（b）1至70 ％摩尔的通式I的取代三聚氰胺（I）其中X，X'和X“选自-NH 2，-NHR和-NRR'，并且只有一个或 X，X'和X“中的两个表示（s）-NH 2，R和R'选自羟基-C 2 -C 10 - 烷基，羟基-C 2 - C 4 - 烷基 - （氧杂-C2 -C 1-4 - 烷基）n，其中n为1至5的整数，氨基-C 2 -C 12 - 烷基或三聚氰胺I和（B）的混合物为0.1至10摩尔％，基于（A）和（ B）的未取代的酚或被选自C 1 -C 9 - 烷基和羟基的基团或被两个或三个苯酚基取代的C 1 -C 4烷烃取代的酚，二（羟基苯基）砜或所述 酚，与甲醛或甲醛释放化合物，摩尔 三聚氰胺与甲醛的比例范围为1：1.15至1：4.5。

    Preparation of alpha-formylamino nitriles
    33.
    发明授权
    Preparation of alpha-formylamino nitriles 失效
    阿尔法 - 甲酰胺硝酸盐的制备

    公开(公告)号：US5077427A

    公开(公告)日：1991-12-31

    申请号：US627021

    申请日：1990-12-13

    申请人： Rolf Fikentscher ,  Michael Kroener

    发明人： Rolf Fikentscher ,  Michael Kroener

    IPC分类号： B01J31/02 ,  B01J31/04 ,  C07B61/00 ,  C07C253/30 ,  C07C255/29

    CPC分类号： C07C255/29

    摘要： A process for preparing .alpha.-formylamino nitriles of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or unsubstituted or substituted, with substituents which are inert under the reaction conditions, aliphatic or heteroaliphatic radicals with 1 to 10, cycloaliphatic or heterocycloaliphatic radicals with 3 to 6, araliphatic radicals with 7 to 12, heteroaraliphatic radicals with 4 to 12, aromatic radicals with 6 to 10 or heteroaromatic radicals with 3 to 10 carbon atoms, by reacting cyanohydrins of the formula II ##STR2## with the formamide III ##STR3## in the presence of acids, entails adding at least one ammonium salt to the reaction mixture.

    摘要翻译： 制备式I的α-甲酰氨基腈的方法，其中R 1和R 2各自为氢或未取代或取代的，具有在反应条件下为惰性的取代基，具有1至10个脂环族或杂环脂族基的脂族或杂脂族基团 具有3至6个具有7至12个芳基的基团，具有4至12个杂芳族脂族基团，具有6至10个芳族基团或具有3至10个碳原子的杂芳族基团的芳基，通过使式II II的氰醇与甲酰胺 在酸存在下III III需要向反应混合物中加入至少一种铵盐。