Secondary battery
    11.
    发明授权
    Secondary battery 失效
    二次电池

    公开(公告)号:US4119767A

    公开(公告)日:1978-10-10

    申请号:US783700

    申请日:1977-04-01

    IPC分类号: H01M10/06 H01M10/00

    CPC分类号: H01M10/06

    摘要: In a secondary battery employing an aqueous lead salt solution as the electrolyte, salts of manganese, cobalt, nickel, copper, thallium, bismuth and/or antimony are additionally present in concentrations of from 0.1 to 100 mmole/l.

    摘要翻译: 在使用铅酸盐水溶液作为电解质的二次电池中,锰,钴,镍,铜,铊,铋和/或锑的盐的浓度另外存在0.1至100毫摩尔/升。

    Preparation of polyurethane foams modified with melamine-formaldehyde
precondensates
    14.
    发明授权
    Preparation of polyurethane foams modified with melamine-formaldehyde precondensates 失效
    用三聚氰胺 - 甲醛预缩合物改性的聚氨酯泡沫的制备

    公开(公告)号:US4367294A

    公开(公告)日:1983-01-04

    申请号:US266158

    申请日:1981-05-22

    CPC分类号: C08G18/544 C08G12/32

    摘要: A process for the preparation of polyurethane foams modified with melamine-formaldehyde precondensates, in which the precondensates employed are storage-stable, aqueous 40-85% strength by weight resin solutions which are obtained by condensing melamine with formaldehyde in a molar ratio of 1:1.1-1.75 in aqueous solution at a pH which, at least periodically, is above 8, and at from 60 to 130.degree. C., until one part by volume of resin solution can be diluted with from 0.5 to 4 parts by volume of water at 20.degree. C. without causing a persisting cloudiness.

    摘要翻译: 用三聚氰胺 - 甲醛预缩合物改性的聚氨酯泡沫的制备方法,其中使用的预缩合物是储存稳定的40-85%重量的树脂溶液,其通过将三聚氰胺与甲醛以摩尔比1: 在水溶液中,在至少周期性地高于8℃,在60-130℃的pH下,直到一分一份体积的树脂溶液可以用0.5至4体积份的水稀释, 在20℃下,不会引起持续的混浊。

    Process for the manufacture of polyurethane foam
    15.
    发明授权
    Process for the manufacture of polyurethane foam 失效
    制造聚氨酯泡沫的方法

    公开(公告)号:US4310632A

    公开(公告)日:1982-01-12

    申请号:US228120

    申请日:1981-01-26

    IPC分类号: C08G18/18 C08G18/14

    CPC分类号: C08G18/1883 C08G18/1858

    摘要: A process for making a polyurethane which comprises reacting an organic polyisocyanate with a higher molecular weight organic polyhydroxyl compound in the presence of a catalyst having the following formula: ##STR1## wherein X is sulfur or NH and n is a whole number from 2 to 6. Also used is a catalyst which is a combination of the above-mentioned catalyst and an organic tin compound.

    摘要翻译: 一种制备聚氨酯的方法,其包括使有机多异氰酸酯与较高分子量的有机多羟基化合物在具有下式的催化剂存在下反应:其中X为硫或NH,n为2至6的整数 也可以使用上述催化剂和有机锡化合物的组合的催化剂。

    Secondary battery
    18.
    发明授权
    Secondary battery 失效
    二次电池

    公开(公告)号:US4092463A

    公开(公告)日:1978-05-30

    申请号:US703957

    申请日:1976-07-09

    摘要: Secondary batteries with aqueous acid solutions of lead salts as electrolytes and inert electrode base plates also contain redox systems in solution. These systems have a standard potential of from -0.1 to +1.4 V relative to a standard hydrogen reference electrode, do not form insoluble compounds with the electrolytes and are not oxidized or reduced irreversibly by the active compositions applied to the electrode base plates, within their range of operating potentials.

    摘要翻译: 含有铅盐酸溶液作为电解质和惰性电极基板的二次电池在溶液中也含有氧化还原体系。 这些系统相对于标准氢参比电极具有-0.1至+1.4V的标准电位,不与电解质形成不溶性化合物,并且不被施加到电极基板上的活性组合物不可逆地氧化或还原 操作电位范围。