中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

6 records (took 0.012 seconds)

    Chrome-free leather retanning
    4.
    发明授权
    Chrome-free leather retanning 有权

    公开(公告)号：US09970070B2

    公开(公告)日：2018-05-15

    申请号：US14514582

    申请日：2014-10-15

    Applicant: Rohm and Haas Company

    Inventor： Caiyun Li ,  Fengyi Su ,  Yin Xue

    IPC: C14C3/16 ,  C14C3/22 ,  C14C3/24 ,  C14C3/26 ,  C14C3/28

    CPC classification number: C14C3/22 ,  C14C3/16 ,  C14C3/26 ,  C14C3/28

    Abstract: A method for forming chrome-free retanned leather including: (a) contacting wet white with from 1% to 8%, by solids weight, based on the wet weight of wet white, retanning agent selected from the group consisting of: i) an aqueous emulsion polymer including, as copolymerized units, from 2% to 35%, by weight, based on the weight of the emulsion polymer, ethylenically-unsaturated monomer bearing at least one epoxy group, the emulsion polymer having a weight average molecular weight of from 2,000 to 100,000; ii) a compound selected from the group comprising piperazine, piperazine hydrates, salts of piperazine, and combinations thereof; and iii) combinations of i) and ii); (b) heating the contacted wet white; and (c) drying the contacted, heated wet white is provided. The present application also relates to chrome-free retanned leather formed by the method of the invention.

    CHROME-FREE LEATHER RETANNING
    6.
    发明申请
    CHROME-FREE LEATHER RETANNING 有权
    无铬皮革返修

    公开(公告)号：US20150107028A1

    公开(公告)日：2015-04-23

    申请号：US14514582

    申请日：2014-10-15

    Applicant: Rohm and Haas Company

    Inventor： Caiyun Li ,  Fengyi Su ,  Yin Xue

    IPC: C14C3/22 ,  C14C3/26 ,  C14C3/28

    CPC classification number: C14C3/22 ,  C14C3/16 ,  C14C3/26 ,  C14C3/28

    Abstract: A method for forming chrome-free retanned leather including: (a) contacting wet white with from 1% to 8%, by solids weight, based on the wet weight of wet white, retanning agent selected from the group consisting of: i) an aqueous emulsion polymer including, as copolymerized units, from 2% to 35%, by weight, based on the weight of the emulsion polymer, ethylenically-unsaturated monomer bearing at least one epoxy group, the emulsion polymer having a weight average molecular weight of from 2,000 to 100,000; ii) a compound selected from the group comprising piperazine, piperazine hydrates, salts of piperazine, and combinations thereof; and iii) combinations of i) and ii); (b) heating the contacted wet white; and (c) drying the contacted, heated wet white is provided. The present application also relates to chrome-free retanned leather formed by the method of the invention.

    Abstract translation: 一种形成无铬复鞣革的方法，其包括：（a）基于潮湿白色复鞣剂的湿重，将湿白色与1％至8％的固体重量相接触，所述湿白色复鞣剂选自：i） 水乳液聚合物，其包含基于乳液聚合物的重量比为2％至35％的共聚单元，所述烯属不饱和单体具有至少一个环氧基，所述乳液聚合物的重均分子量为 2,000至100,000; ii）选自哌嗪，哌嗪水合物，哌嗪盐及其组合的化合物; 和iii）i）和ii）的组合; （b）加热接触的湿白色; 和（c）提供干燥接触的加热的湿白色。 本申请还涉及通过本发明的方法形成的无铬鞣革。

Patent Agency Ranking