Method of producing sectional strips and sectional sheets
    2.
    发明授权
    Method of producing sectional strips and sectional sheets 失效
    生产剖面条和剖面图的方法

    公开(公告)号:US06189770B1

    公开(公告)日:2001-02-20

    申请号:US08993399

    申请日:1997-12-18

    申请人: Werner Lotz

    发明人: Werner Lotz

    IPC分类号: B23K3102

    CPC分类号: B23K20/04 B23K20/24

    摘要: A method of producing sectional strips and sectional sheets of different thicknesses over the width, in which at least two metal strips or metal sheets of different widths are joined to each other by roll bonded cladding which thins the thickness of the overlaid strips. One strip is wider than the other strip which is narrower. The two strips are arranged symmetrically to the rolling direction center line. The facing surfaces of the two overlaid strips may be prepared for bonding them. The invention also concerns sectional strips or sectional sheets produced by the method.

    摘要翻译: 一种在宽度上制造不同厚度的分段条和截面片的方法,其中至少两个不同宽度的金属条或金属片通过辊压粘合的包层彼此接合,这使得覆盖条的厚度变薄。 一条宽于另一条较窄的条。 两条条对称地设置在轧制方向中心线上。 两个重叠的条带的相对表面可以被制备用于粘合它们。 本发明还涉及通过该方法制造的截面条或截面片。

    Process for tanning leather
    3.
    发明授权
    Process for tanning leather 失效
    鞣制皮革的工艺

    公开(公告)号:US4810252A

    公开(公告)日:1989-03-07

    申请号:US104252

    申请日:1987-10-05

    IPC分类号: C14C3/18

    CPC分类号: C14C3/18

    摘要: Use of a resin mixture of, or of a mixed resin from, a melamine-formaldehyde resin and an anionically modified melamine-formaldehyde resin for tanning leather. The anionic modification of the melamine-formaldehyde resin is obtained by preparing the resin in the presence of alkali metal sulfite, alkali metal hydrogensulfite or alkali metal sulfamate. By partial modification it is possible to obtain a mixed resin, while mixing a modified with an unmodified resin gives a resin mixture.

    摘要翻译: 使用来自三聚氰胺 - 甲醛树脂和阴离子改性的三聚氰胺 - 甲醛树脂的树脂混合物或混合树脂用于鞣皮革。 三聚氰胺 - 甲醛树脂的阴离子改性通过在碱金属亚硫酸盐,碱金属亚硫酸氢盐或碱金属氨基磺酸盐的存在下制备树脂而获得。 通过部分改性,可以获得混合树脂,同时用未改性树脂混合改性树脂混合物。

    Processing for tanning leather
    4.
    发明授权
    Processing for tanning leather 失效
    加工鞣皮革

    公开(公告)号:US4822372A

    公开(公告)日:1989-04-18

    申请号:US95136

    申请日:1987-09-11

    IPC分类号: C14C3/18

    CPC分类号: C14C3/18

    摘要: An improved process for tanning leather by treating animal skins with a water-soluble melamine-formaldehyde resin in the presence of an acid catalyst towards the end is improved by using a melamine-formaldehyde resin which is at least partially etherified with a glycol ether, alkyl glycol ether, or both.

    摘要翻译: 通过使用三聚氰胺甲醛树脂来改善通过在酸催化剂存在下使水溶性三聚氰胺 - 甲醛树脂在末端处理动物皮肤来改善皮革的改进方法,所述三聚氰胺甲醛树脂至少部分地与二醇醚醚化,烷基 乙二醇醚或二者。

    Economy chrome tanning process with aldehyde-acids and keto-acids
    7.
    发明授权
    Economy chrome tanning process with aldehyde-acids and keto-acids 失效
    经济铬鞣制工艺与醛酸和酮酸

    公开(公告)号:US4715861A

    公开(公告)日:1987-12-29

    申请号:US861100

    申请日:1986-05-08

    IPC分类号: C14C1/08 C14C3/06 C14C1/00

    CPC分类号: C14C1/08 C14C3/06

    摘要: Economy chrome tanning process wherein the pelts are pretreated before the tanning with 0.1 to 2% of an aldehyde- or keto-acid, preferably with glyoxylic acid or pyruvic acid, and are then tanned by customary methods. In this pretreatment, which is preferably carried out in the pickle, the tanning requires a chromium supply of only 1.25 to 1.5% of Cr.sub.2 O.sub.3 on weight of pelt. Despite this reduced amount of chrome tannin the results obtained are boil-resistant leathers with uniform chromium distribution, excellent color levelness and very good physical properties.

    摘要翻译: 经济铬鞣制方法,其中皮革在鞣制前用0.1至2%的醛 - 或酮酸,优选用乙醛酸或丙酮酸进行预处理,然后通过常规方法进行鞣制。 在这种优选在酸洗中进行的预处理中,鞣制需要铬含量仅为皮质重量的1.25至1.5%的Cr 2 O 3。 尽管铬单宁的量减少,但是获得的结果是具有均匀的铬分布,优异的颜色水平和非常好的物理性能的耐沸皮革。