公开(公告)号：US20230078847A1

公开(公告)日：2023-03-16

申请号：US17899255

申请日：2022-08-30

Applicant: ECOLAB USA INC.

Inventor： Mingli WEI ,  Heqing HUANG ,  David Steven JORDAN ,  Weiguo CHENG ,  Mei LIU ,  Zhi CHEN ,  J. Matthew CHUDOMEL ,  Meng ZHANG

IPC: D21H17/00 ,  D21H21/18 ,  D21H17/67 ,  D21H17/38 ,  D21H23/04

Abstract: Compositions and colloidal particles are provided that may be used to improve a papermaking process. The compositions and colloidal particles may include a polymer and an inorganic salt. A papermaking process carried out using the presently disclosed compositions and colloidal particles may produce a paper product that has increased strength properties.

公开(公告)号：US20230313467A1

公开(公告)日：2023-10-05

申请号：US18004445

申请日：2021-07-07

Applicant: ECOLAB USA INC.

Inventor： David Steven JORDAN ,  Heqing HUANG ,  Weiguo CHENG ,  Mingli WEI ,  Mei LIU ,  William Arthur GRANGER

IPC: D21H21/18 ,  D21H23/28 ,  D21H17/42 ,  D21H23/50 ,  D21H27/30 ,  D21H17/44

CPC classification number: D21H21/18 ,  D21H17/42 ,  D21H17/44 ,  D21H23/28 ,  D21H23/50 ,  D21H27/30

Abstract: The present disclosure provides methods and compositions for strengthening paper. The methods may include a step of spraying an anionic polymer onto a paper sheet to increase the strength of the paper sheet. The anionic polymer may have amino groups, amide groups, or a combination of amino groups and amide groups. These groups may be functionalized with an aldehyde. Methods may also include a step of adding a wet end composition to a wet end of the papermaking process.