# US 4,391,649 A · Process for regenerating a strongly acidic cation exchange resin

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- Number: US 4,391,649 A
- Document ID: US4391649A
- Status: Granted
- Kind: A
- Application number: 06/279,217
- Filed: 1981-06-30
- Granted: 1983-07-05
- Earliest claimed: 1980-09-26
- Assignees: Japan Organo Co., Ltd.
- Inventors: Hiroshi Shimizu; Sigeo Sakai; Fumihiko Matsuda; Reiko Matsumoto
- Web page: https://patentgrep.com/patent/US4391649A

## CPC

- B01J 49/53: for cationic exchangers
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

This invention relates to a process for regenerating a strongly acidic cation exchange resin which has used for a desalting treatment or partition chromatographic separation of a sugar liquid which lowers its separation capability, by means of contacting said strongly acidic cation exchange resin with an enzyme solution.

## Claims

### Claim 1

A process for regenerating a strongly acidic cation exchange resin having organic matter deposited on surfaces thereof comprising contacting said strongly acidic cation exchange resin with an enzyme solution whereby said organic matter is removed from the surfaces of said resin.

### Claim 2 (depends on 1)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 1, wherein said resin is contacted with the enzyme solution at a temperature of 30.degree. to 100.degree. C. for at least two hours.

### Claim 3 (depends on 1)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 1, wherein the enzyme solution is a solution of amylase.

### Claim 4 (depends on 1)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 1, wherein the enzyme solution is a solution of protease.

### Claim 5 (depends on 1)

A process for regenerating a strongly acidic cation exchange resin as claimed is claim 1, wherein the enzyme solution is a solution of a mixture of amylase and protease.

### Claim 6 (depends on 1)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 1, wherein the enzyme solution is held in contact with a layer of said resin for a predetermined period.

### Claim 7 (depends on 1)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 1, wherein the enzyme solution is recycled through a layer of said resin for a predetermined period.

### Claim 8 (depends on 1)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 1 wherein the cation exchange resin having organic matter deposited on surfaces thereof is obtained by contacting a strongly acidic cation exchange resin with a sugar liquid obtained by the saccharification of starch.

### Claim 9

A process for regenerating a strongly acidic cation exchange resin having polysaccharides and/or proteins deposited on surfaces thereof comprising contacting said strongly acidic cation exchange resin with an enzyme solution whereby each of said polysaccharides and/or proteins is removed from the surfaces of said resin.

### Claim 10 (depends on 9)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 9 wherein the cation exchange resin having polysaccharides and/or proteins deposited on surfaces thereof is obtained by contacting a strongly acidic cation exchange resin with a sugar liquid obtained by the saccharification of starch.

### Claim 11 (depends on 9)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 9, wherein said resin is contacted with the enzyme solution at a temperature of 30.degree. to 100.degree. C. for at least two hours.

### Claim 12 (depends on 9)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 9 wherein the enzyme solution is a solution of amylase.

### Claim 13 (depends on 9)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 9, wherein the enzyme solution is a solution of protease.

### Claim 14 (depends on 9)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 9, wherein the enzyme solution is a solution of a mixture of amylase and protease.

### Claim 15 (depends on 9)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 9, wherein the enzyme solution is held in contact with a layer of said cation exchange resin.

### Claim 16 (depends on 9)

A process for regenerating a strongly acidic cation exchange resin as claimed in claim 9, wherein the enzyme solution is recycled through a layer of said cation exchange resin for a predetermined period.