Recycling of cured aminoplast resins
    41.
    发明授权
    Recycling of cured aminoplast resins 失效
    固化的氨基塑料树脂的回收

    公开(公告)号:US5356938A

    公开(公告)日:1994-10-18

    申请号:US196493

    申请日:1994-02-15

    摘要: Cured aminoplast resins are recycled by a process in which said resins, which may contain fillers, are treated with an aqueous sulfite, hydrogen sulfite or disulfite solution and the resulting low molecular weight degradation products are used in chemical processes. The resulting low molecular weight degradation products of cured aminoplast resins are used for coating moldings, for tanning leather and skins and for the production of moldings which contain cured aminoplast resins or consist thereof.

    摘要翻译: 固化的氨基塑料树脂通过其中可以含有填料的所述树脂用亚硫酸氢盐,亚硫酸氢盐或二亚硫酸盐溶液处理的方法再循环,并且所得到的低分子量降解产物用于化学方法。 所得到的固化的氨基塑料树脂的低分子量降解产物用于涂布模制品,用于鞣制皮革和皮肤,以及用于生产包含固化的氨基塑料树脂或由其组成的模制品。

    Modified melamine-formaldehyde resins
    43.
    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

    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 N-alkyl- and N,N-dialkyldiaminoethanes
    45.
    发明授权
    Preparation of N-alkyl- and N,N-dialkyldiaminoethanes 失效
    N-烷基和N,N-二烷基二氨基甲烷的制备

    公开(公告)号:US5158974A

    公开(公告)日:1992-10-27

    申请号:US597047

    申请日:1990-10-15

    CPC分类号: C07C209/60

    摘要: A process is described for the preparation of an N-alkyl- or N,N-dialkyl-1,2-diaminoethane of the general formula I ##STR1## where R.sup.1 is hydrogen or methyl, R.sup.2 is C.sub.1 - to C.sub.5 -alkyl, and R.sup.3 is hydrogen or C.sub.1 - to C.sub.5 -alkyl, with the proviso that the total number of carbon atoms in R.sup.2 and R.sup.3 is an integer from 1 to 6, by reacting an imine of the general formula II ##STR2## with an amine of the general formula III ##STR3## where R.sup.1, R.sup.2 and R.sup.3 are as defined above, which comprises carrying out the reaction in the presence of carbon dioxide at from 10.degree. to 150.degree. C. and at from 0.5 to 50 bar.

    摘要翻译: 描述了制备通式I(I)的N-烷基 - 或N,N-二烷基-1,2-二氨基乙烷的方法,其中R1是氢或甲基,R2是C1-至C5- 烷基,并且R 3是氢或C 1至C 5 - 烷基,条件是R 2和R 3中的碳原子总数为1至6的整数,通过使通式II的亚胺(II) )与通式III(III)的胺反应,其中R 1,R 2和R 3如上定义,其包括在二氧化碳存在下在10-150℃下进行反应 0.5至50巴。

    Hydroxyoxaalkylmelamines
    47.
    发明授权
    Hydroxyoxaalkylmelamines 失效
    羟基氧杂烷基三聚氰胺

    公开(公告)号:US4886882A

    公开(公告)日:1989-12-12

    申请号:US897261

    申请日:1986-08-18

    摘要: Hydroxyoxaalkylmelamines of the general formula I ##STR1## where the radicals R may be identical or different and are each hydrogen or a radical of the general formula IIH--(--O--CHR'--CHR'--)--.sub.n (II)where the radicals R' may be indentical or different and are each hydrogen or C.sub.1 -C.sub.4 -alkyl and n is 2 or 3, and mixtures of these, are useful intemediates for the preparation of urethanes and for modifying aminoplast resins.

    摘要翻译: 其中基团R可以相同或不同并且各自为氢或通式IIH - ( - O-CHR'-CHR' - ) - n(II)的基团的通式I的羟基氧代烷基三聚氰胺(I) ),其中基团R'可以是不连续的或不同的,并且各自是氢或C 1 -C 4 - 烷基,n是2或3,并且它们的混合物是制备氨基甲酸酯和修饰氨基塑料树脂的有用的中间体。