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    • 6. 发明申请
    • USE OF HYPERBRANCHED POLYCARBONATES AS A DISPERSING AGENT FOR PIGMENTS
    • 超级聚碳酸酯作为颜料分散剂的用途
    • US20090093589A1
    • 2009-04-09
    • US12299323
    • 2007-05-15
    • Bernd BruchmannAndres Carlos Garcia EspinoMatthias KlugleinWolfgang BestJoachim JesseBenno Sens
    • Bernd BruchmannAndres Carlos Garcia EspinoMatthias KlugleinWolfgang BestJoachim JesseBenno Sens
    • C08L69/00C08G64/02
    • C09B67/0063C08G64/0216C09B67/0066C09B67/009
    • Use of high functionality hyperbranched polycarbonates obtainable bya) preparing one or more different condensation products (K) either bya1) reacting at least one organic carbonate (A) of the general formula RO[(CO)O]nR with at least one aliphatic, aliphatic/aromatic or aromatic alcohol (B) having at least 3 OH groups by elimination of alcohols ROH, where each R is independently a straight chain or branched aliphatic, aromatic-aliphatic or aromatic hydrocarbyl radical having 1 to 20 carbon atoms and the R radicals may also be bonded to each other to form a ring comprising the grouping —O[(CO)O]n—, where n is an integer from 1 to 5,ora2) reacting phosgene, diphosgene or triphosgene with the aliphatic, aliphatic/aromatic or aromatic alcohol (B) to liberate hydrogen chloride,the quantitative ratio of the alcohols (B) to the carbonates (A) or to the phosgenes in the reaction mixture being so chosen that the condensation products (K) comprise on average either one carbonate or carbamoyl chloride group and more than one OH group or one OH group and more than one carbonate or carbamoyl chloride group,andb) intermolecularly reacting the condensation products (K) from step a),as a dispersant for a pigment.
    • 通过a)制备一种或多种不同的缩合产物(K)的高官能度超支化聚碳酸酯的使用,通过a1)使通式RO [(CO)O] n R的至少一种有机碳酸酯(A)与至少一种脂族 ,通过消除醇ROH具有至少3个OH基团的脂族/芳族或芳族醇(B),其中每个R独立地是具有1至20个碳原子的直链或支链脂族,芳族 - 脂族或芳族烃基,R 自由基也可以彼此键合以形成包含分组-O [(CO)O] n - 的环,其中n是1至5的整数,或a2)使光气,双光气或三光气与脂族,脂族 /芳族或芳香族醇(B)以释放氯化氢,反应混合物中醇(B)与碳酸酯(A)或光气体的定量比被选择为使得缩合产物(K)平均包含 一个碳酸盐或卡巴莫 多于一个OH基团或一个OH基团和多于一个碳酸酯或氨基甲酰氯基团,和b)使来自步骤a)的缩合产物(K)与颜料分散反应。