Systems and methods for producing superabsorbent polymers

A manufacturing system, superabsorbent technology, applied in the field of superabsorbent polymers

Inactive Publication Date: 2018-11-23
NOVOMER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Major manufacturers vary considerably in their approach to manufacturing SAP

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  • Systems and methods for producing superabsorbent polymers
  • Systems and methods for producing superabsorbent polymers
  • Systems and methods for producing superabsorbent polymers

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Embodiment Construction

[0021] The following description sets forth exemplary methods, parameters, etc. It should be appreciated, however, that the description is not intended as a limitation on the scope of the invention, but rather is provided as a description of illustrative embodiments.

[0022] Provided herein are systems and methods for making superabsorbent polymers ("SAPs") from beta-propiolactone ("BPL"). For example, ethylene oxide ("EO") can be carbonylated, for example, with carbon monoxide ("CO") in the presence of a carbonylation catalyst to produce BPL. BPL can be polymerized in the presence of a polymerization catalyst to produce polypropiolactone ("PPL"). In addition, PPL can be thermally decomposed to produce acrylic acid "AA", including, for example, glacial acrylic acid "GAA". BPL, PPL, AA or combinations thereof can be used to make SAP.

[0023] refer to figure 1 , depicting an exemplary system for making SAP from carbon monoxide and ethylene oxide. Carbon monoxide ("CO") s...

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Abstract

Provided herein are systems, and methods of using such systems, for producing superabsorbent polymers from ethylene oxide and carbon monoxide. The production systems have various unit operations, including, for example, a beta-propiolactone production system configured to produce beta-propiolactone from ethylene oxide and carbon monoxide and a superabsorbent polymer production system configured toproduce superabsorbent polymers from beta-propiolactone and / or acrylic acid.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 311,275, filed March 21, 2016, which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to the manufacture of superabsorbent polymers using ethylene oxide ("EO") and carbon monoxide ("CO") as starting materials. More specifically, the present invention relates to the manufacture of superabsorbent polymers from beta-propiolactone ("BPL") using unit operations, such as reactive distillation. Background technique [0004] Superabsorbent polymers ("SAPs") are polymers that can absorb many times their own weight in liquid. Since the main characteristic of SAP is its ability to absorb and retain high levels of liquid, its main use is in hygiene products, such as diapers and the like. As such, SAP plays an important role in everyday life. [0005] SAP can be synthesized from a variety of mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/09C07C51/10C07C57/04C07C57/20C08G63/02C08G63/08C08G63/12C08L33/02C08L33/08
CPCC08G63/78C08G63/785C08F220/06C08G63/08Y02P20/10C07D305/12C08G63/90B01D3/009B01D61/027B01J19/246B01J19/248C08K3/22C08K5/0025C08K5/098
Inventor 萨德什·H·苏克拉杰
Owner NOVOMER INC
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