会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Modified melamine-formaldehyde resins
    • 改性三聚氰胺 - 甲醛树脂
    • US5322915A
    • 1994-06-21
    • US910382
    • 1992-07-08
    • Juergen WeiserWolfgang ReutherRolf FikentscherWolfgang FathHeinz BerbnerHans D. ZettlerHeinz Voelker
    • Juergen WeiserWolfgang ReutherRolf FikentscherWolfgang FathHeinz BerbnerHans D. ZettlerHeinz Voelker
    • C08G14/09C08G14/06C08G14/10
    • C08G14/10
    • 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.
    • 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。
    • 6. 发明授权
    • Preparation of N-hydroxypyrazoles
    • N-羟基吡唑的制备
    • US4945166A
    • 1990-07-31
    • US367053
    • 1989-06-16
    • Ulf BausWolfgang ReutherRolf Fikentscher
    • Ulf BausWolfgang ReutherRolf Fikentscher
    • C07D231/12C07D231/16C07D231/54C07D231/56C07D521/00
    • C07D249/08C07D231/12C07D231/16C07D231/56C07D233/56
    • N-hydroxypyrazoles of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen, alkyl, halogen or aryl, or R.sup.1 and R.sup.2 or R.sup.2 and R.sup.3 together with the carbon atoms carrying these radicals form an aromatic or nonaromatic ring of 5 or 6 carbon atoms are prepared by a process in which(A) a pyrazole of the general formula II ##STR2## is converted in a conventional manner with an alkali metal hydroxide, alkali metal hydride or alkali metal carbonate into one of its metal salts of the general formula III ##STR3## where ME.sym. is a cation of an alkali metal, and (B) the resulting metal salt of the general formula III is reacted with dibenzoyl peroxide in an inert organic solvent or in a 2-phase system, in the presence or absence of a phase transfer catalyst.
    • 通式I的N-羟基吡唑(I)其中R 1,R 2和R 3可以相同或不同,各自为氢,烷基,卤素或芳基,或R 1和R 2或R 2和R 3与携带的碳原子一起 这些基团形成5或6个碳原子的芳族或非芳族环是通过以下方法制备的:其中(A)通式II的吡唑(II)以常规方式用碱金属氢氧化物,碱 金属氢化物或碱金属碳酸盐转化成其通式III(III)的金属盐之一,其中ME(+)是碱金属的阳离子,和(B)所得到的通式III的金属盐是 在相转移催化剂存在或不存在下,在惰性有机溶剂或2-相体系中与二苯甲酰基过氧化物反应。