# US 2014/0155254 A1 · Robust Promoter Catalyst System

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- Number: US 2014/0155254 A1
- Document ID: US20140155254A1
- Status: Published application
- Kind: A1
- Application number: 14/145,529
- Filed: 2013-12-31
- Published: 2014-06-05
- Earliest claimed: 2011-05-02
- Assignees: Sabic Innovative Plastics IP B.V.
- Applicants: SABIC Innovative Plastics IP B.V.
- Inventors: Umesh Krishna Hasyagar; Rathinam Jothi Mahalingam; Kishan Gurram; Paul Eijsbouts
- Web page: https://patentgrep.com/patent/US20140155254A1

## CPC

- B01J 31/08: Ion-exchange resins
- B01J 31/0235: {Nitrogen containing compounds}
- B01J 31/10: sulfonated
- C07C 37/20: using aldehydes or ketones
- Y02P 20/582: Recycling of unreacted starting or intermediate materials
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A modified ion exchange resin catalyst having an attached dimethyl thiazolidine promoter is disclosed. Also disclosed is a process for catalyzing condensation reactions between phenols and ketones, wherein reactants are contacted with a modified ion exchange resin catalyst having an attached dimethyl thiazolidine promoter. Also disclosed is a process for catalyzing condensation reactions between phenols and ketones that does not utilize a bulk promoter.

## Claims

### Claim 1

A catalyst system comprising a cross-linked, sulfonated ion exchange resin catalyst and a dimethyl thiazolidine promoter.

### Claim 2 (depends on 1)

The catalyst system of claim 1, wherein the cross-linked, sulfonated ion exchange resin catalyst comprises a plurality of sulfonic acid groups and has a degree of cross-linking of from about 1% to about 4%.

### Claim 3 (depends on 1)

The catalyst system of claim 1, wherein the cross-linked, sulfonated ion exchange resin catalyst has a degree of cross-linking of from about 1.5% to about 2.5%.

### Claim 4 (depends on 1)

The catalyst system of claim 1, wherein the cross-linked, sulfonated ion exchange resin catalyst has a degree of cross-linking of about 2%.

### Claim 5 (depends on 1)

The catalyst system of claim 1, wherein the dimethyl thiazolidine promoter is at least partially bound to the cross-linked, sulfonated ion exchange resin catalyst.

### Claim 6 (depends on 1)

The catalyst system of claim 1, wherein at least a portion of the dimethly thiazolidine promoter is covalently bound to the cross-linked, sulfonated ion exchange resin catalyst.

### Claim 7 (depends on 1)

The catalyst system of claim 1, wherein at least a portion of the dimethyl thiazolidine promoter is ionically bound to the cross-linked, sulfonated ion exchange resin catalyst.

### Claim 8 (depends on 2)

The catalyst system of claim 2, wherein the dimethyl thiazolidine promoter is bound to from about 18% to about 25% of the sulfonic acid groups of the cross-linked, sulfonated ion exchange resin catalyst.

### Claim 9 (depends on 2)

The catalyst system of claim 2, wherein the dimethyl thiazolidine promoter is bound to from about 20% to about 24% of the sulfonic acid groups of the cross-linked, sulfonated ion exchange resin catalyst.

### Claim 10 (depends on 2)

The catalyst system of claim 2, wherein the dimethyl thiazolidine promoter is bound to about 22% of the sulfonic acid groups of the cross-linked, sulfonated ion exchange resin catalyst.

### Claim 11 (depends on 1)

The catalyst system of claim 1, wherein the cross-linked, sulfonated ion exchange resin catalyst comprises a polystyrene based ion exchange resin.

### Claim 12 (depends on 1)

The catalyst system of claim 1, wherein the cross-linked, sulfonated ion exchange resin catalyst comprises a polystyrene based ion exchange resin having a degree of cross-linking of from about 1% to about 4%, and wherein at least a portion of the dimethyl thiazolidine promoter is ionically bound to the polystyrene based ion exchange resin.

### Claim 13 (depends on 1)

The catalyst system of claim 1, wherein the cross-linked, sulfonated ion exchange resin catalyst comprises a polysiloxane based ion exchange resin.

### Claim 14 (depends on 1)

The catalyst system of claim 1, wherein the cross-linked, sulfonated ion exchange resin catalyst comprises a polysiloxane based ion exchange resin having a degree of cross-linking of from about 1% to about 4%, and wherein at least a portion of the dimethyl thiazolidine promoter is ionically bound to the polysiloxane based ion exchange resin.

### Claim at position 15

-41. (canceled)