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.

公开(公告)号：US10538057B2

公开(公告)日：2020-01-21

申请号：US15119141

申请日：2015-02-19

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Fengyi Su ,  Jianping Pan ,  Xiaobing Yun ,  Rajen M. Patel ,  Yushan Hu ,  Yong Chen

IPC: B32B7/12 ,  B29C48/00 ,  B29C48/22 ,  B32B27/08 ,  B32B27/32 ,  B29C55/16 ,  B32B37/10 ,  B65D65/38 ,  B29K23/00 ,  B29L31/00

Abstract: Disclosed herein is a multilayered film comprising a first layer and a second layer; and a tie layer; where the tie layer comprises a crystalline block composite and where the tie layer is disposed between the first layer and the second layer; the first layer being disposed on a first surface of the tie layer; the second layer being disposed on a second surface of the tie layer; where the second surface is opposedly disposed to the first surface; where the multilayered film is biaxially oriented. Disclosed herein too is a method of manufacturing the aforementioned multilayer film.

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。