Method for the preparation of hardenable urea formaldehyde resins
    3.
    发明授权
    Method for the preparation of hardenable urea formaldehyde resins 失效
    制备可硬化脲醛树脂的方法

    公开(公告)号:US4113701A

    公开(公告)日:1978-09-12

    申请号:US793315

    申请日:1977-05-03

    CPC分类号: C08G12/34

    摘要: A method for the preparation of solutions of hardenable urea-formaldehyde resins which are suitable for impregnating paper supports used for coating wood-based panels wherein urea and formaldehyde are first mixed in specific mole ratios and reacted for a period of time to a given viscosity, an aminosulfonic acid is then added and the pH is controlled with ammonia to further react the mixture and finally, additional ammonia and urea are added to produce the final viscosity product wherein a portion of the initial urea is replaced with a melamine which results in significant improvements in the temperature and pH control of the process.

    摘要翻译: 一种用于制备可硬化脲醛树脂溶液的方法,其适用于浸渍用于涂布木质板的纸支架,其中脲和甲醛首先以特定摩尔比混合并反应一定时间至给定粘度, 然后加入氨基磺酸,并用氨控制pH以进一步使混合物反应,最后加入另外的氨和尿素以产生最终粘度产物,其中一部分初始尿素被三聚氰胺代替,导致显着改善 在温度和pH值控制过程中。

    Quaternary imidazole compounds as microbicides
    4.
    发明授权
    Quaternary imidazole compounds as microbicides 失效
    第四纪咪唑化合物作为杀菌剂

    公开(公告)号:US4062965A

    公开(公告)日:1977-12-13

    申请号:US664273

    申请日:1976-03-05

    摘要: This invention relates to novel compounds having the formula: ##STR1## wherein R.sup.1 is a straight-chain alkyl group having 8 to 18 carbon atoms, R.sup.2 is a straight-chain alkyl group having 1 to 3 carbon atoms, R.sup.3 is a straight-chain alkyl group having 8 to 16 carbon atoms, and X is chlorine or bromine. The invention further relates to novel microbiocidal compositions containing the novel compounds, and also to a process for preparing the novel compounds.

    摘要翻译: 本发明涉及具有下式的新化合物:其中R 1是具有8至18个碳原子的直链烷基,R 2是具有1至3个碳原子的直链烷基,R 3是直链 具有8至16个碳原子的烷基,X是氯或溴。 本发明还涉及含有新化合物的新型杀微生物组合物,还涉及制备新化合物的方法。

    Process for making carrier sheets containing hardenable polyester resins
    5.
    发明授权
    Process for making carrier sheets containing hardenable polyester resins 失效
    制造含有可硬化聚酯树脂的载体片的方法

    公开(公告)号:US4002781A

    公开(公告)日:1977-01-11

    申请号:US213225

    申请日:1971-12-28

    摘要: This invention relates to a process for making carrier sheets containing hardenable polyester resins by treating the carrier sheets with solutions or emulsions of polyester resins, which comprisesA. impregnating the carrier sheet with an aqueous solution of a hardenable water-soluble polyester resin,B. substantially drying the carrier sheet containing the aqueous solution of the hardenable polyester resin,C. applying a polymerizable unsaturated compound onto the resin-containing carrier sheet in a quantity sufficient for subsequent cross-linking,D. coating the treated resin-containing carrier sheet with a solution or an aqueous dispersion of a water-insoluble hardenable polyester resin containing a cross-linking agent, andE. substantially drying the resultant product of the process.

    摘要翻译: 本发明涉及通过用聚酯树脂的溶液或乳液处理载体片材来制备含有可硬化聚酯树脂的载体片材的方法,其包括A.用可溶性水溶性聚酯树脂的水溶液印刷载体片材B. 大量干燥含有可饱和聚酯树脂的水溶液的载体片材C.将可聚合的不饱和化合物在含有树脂的载体片材上用于后续交联的数量有限的D.将含有树脂的载体片材涂布于 一种溶液或含有交联剂的水不溶性可再生聚酯树脂的水分散体,以及E.大量干燥该方法的结果产物。

    Process for the preparation of heat-curable silicone resins usable
especially as electrical insulating resins
    6.
    发明授权
    Process for the preparation of heat-curable silicone resins usable especially as electrical insulating resins 失效
    制备可用作电绝缘树脂的可热固化的有机硅树脂的方法

    公开(公告)号:US4408031A

    公开(公告)日:1983-10-04

    申请号:US343185

    申请日:1982-01-27

    摘要: The invention relates to a process for the preparation of heat-curable resins, usable especially as electrically insulating resins, by the reaction of alkoxy siloxanes of the formula ##STR1## in which OR.sup.1 represents an alkoxy group of primary or secondary aliphatic alcohols with 1 to 4 carbon atoms,R.sup.2 represents an alkyl or a phenyl group,a has a value of 1.0 to 1.5,b has a value of 0.1 to 1.0; witha mixture of low molecular weight, multihydric alcohols consisting of(a) 25 to 95 mole percent of neopentylglycol hydroxypivalate, and(b) 75 to 5 mole percent of a low molecular weight, at least trihydric alcoholat temperatures of 80.degree. to 200.degree. C. The resins thus prepared can be utilized advantageously for the insulation of generators, transformers and the like. They possess high elasticity and excellent adhesion.

    摘要翻译: 本发明涉及一种制备可热固化树脂的方法,特别是电绝缘树脂,通过式“IMAGE”的烷氧基硅氧烷的反应,其中OR 1表示伯或仲脂族醇的烷氧基,其中1至 4个碳原子,R 2表示烷基或苯基,a的值为1.0〜1.5,b为0.1〜1.0的值。 与(a)25至95摩尔%的新戊二醇羟基新戊酸酯和(b)75至5摩尔%的低分子量,至少三元醇在80至200℃的温度下混合的低分子量多元醇 因此制备的树脂可有利地用于发电机,变压器等的绝缘。 它们具有高弹性和优异的附着力。

    Process for the preparation of thermosettable urea-formaldehyde resins
and method for use thereof
    8.
    发明授权
    Process for the preparation of thermosettable urea-formaldehyde resins and method for use thereof 失效
    制备可热固脲醛树脂的方法及其使用方法

    公开(公告)号:US4247433A

    公开(公告)日:1981-01-27

    申请号:US42202

    申请日:1979-05-24

    摘要: A method for preparing thermosettable urea-formaldehyde resins having a urea to formaldehyde molar ratio of 1:1 to 1:1.5 wherein urea and formaldehyde are first reacted in an aqueous solution at a molar ratio of 1:1.5 to 1:4 in the pH range between 7.5 to 10, and then condensing the reactants in a pH range from 4 to 6 to a precipitation number of 1:1.5 to 1:10, thereafter adjusting the pH to 7 to 10 and adding the remaining urea to obtain a molar ratio of 1:1 to 1:1.5 and continuing the reaction until a precipitation number of 1:0.5 to 1:3 is obtained. The products obtained have a uniform molecular weight and good penetration properties when used to impregnate supporting webs for coating wood-based panels.

    摘要翻译: 制备尿素与甲醛摩尔比为1:1至1:1.5的可热固脲醛树脂的方法,其中尿素和甲醛首先在水溶液中以1:1.5至1:4的摩尔比在pH 范围在7.5至10之间,然后将反应物在4至6的pH范围内缩合至沉淀数为1:1.5至1:10,此后将pH调节至7至10,并加入剩余的尿素以获得摩尔比 为1:1至1:1.5,并继续反应直到获得1:0.5至1:3的沉淀数。 当用于浸渍用于涂覆木质面板的支撑纤维网时,获得的产品具有均匀的分子量和良好的渗透性能。