IP Library Granted Patent US 11,149,237
Granted Patent B2
US 11,149,237 · App. 16/335,295 · Granted Oct 19, 2021

Detergent bars

Inventors: Saugata Nad (Mumbai, IN); Ravi Rao (Pune, IN); Robert Krasnansky (Le Rouret, FR)
Assignee: Dow Global Technologies LLC
C11D17/0065C11D3/225C11D3/3707C11D3/3761C11D11/0017C11D11/0023
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Quick Facts
Patent No.
US 11,149,237
App. No.
16/335,295
Granted
Oct 19, 2021
Kind
B2
Abstract

A detergent bar comprising from 0.01 to 1 wt % polyethylene glycol having a molecular weight of at least 100,000 and at least one of: (a) from 0.01 to 5 wt % polyacrylic acid having a molecular weight from 1,000 to 20,000; (b) from 0.01 to 1 wt % hydroxypropyl methylcellulose; and (c) from 0.01 to 1 wt % hydroxyethyl cellulose.

Claims (26)

1. A detergent bar comprising from 0.05 to 0.8 wt % polyethylene glycol having a molecular weight of at least 1,000,000 and at least one of:

(a) from 0.01 to 5 wt % polyacrylic acid having a molecular weight from 1,000 to 20,000;

(b) from 0.01 to 1 wt % hydroxypropyl methylcellulose; and

(c) from 0.01 to 1 wt % hydroxyethyl cellulose.

2. The detergent bar of claim 1 , wherein the polyethylene glycol has a molecular weight of at least 3,000,000 and no more than 8,000,000.

3. The detergent bar of claim 2 , wherein the detergent bar comprises 0.4 to 4.5 wt % polyacrylic acid having M w , from 1,500 to 15,000.

4. The detergent bar of claim 3 , wherein the detergent bar comprises 0.05 to 0.6 wt % hydroxypropyl methylcellulose.

5. The detergent bar of claim 4 , wherein the detergent bar comprises 0.15 to 0.9 wt % hydroxyethyl cellulose.

6. The detergent bar of claim 5 in which the hydroxypropyl methylcellulose has a methoxyl content between 15 and 30 wt % and a hydroxypropoxyl content between 10 and 30%; and the hydroxyethylcellulose has an ethylene oxide molar substitution from 0.5 to 5.

7. The detergent bar of claim 1 , wherein the detergent bar contains no more than 1 wt % of any cellulose derivative other than hydroxypropyl methylcellulose and hydroxyethyl cellulose.

8. The detergent bar of claim 1 , wherein the detergent bar contains 0.09 to 0.5 wt % of the polyethylene glycol.

9. A detergent bar comprising 5 to 24 wt % surfactant;

75 to 95 wt % minerals;

0.05 to 0.8 wt % polyethylene glycol having a molecular weight of 3,000,000 to 8,000,000;

0.4 to 4.5 wt % polyacrylic acid having a molecular weight of 1,500 to 15,000;

0.05 to 0.6 wt % hydroxypropyl methylcellulose; and

0.15 to 0.9 wt % hydroxyethyl cellulose.

10. The detergent bar of claim 9 , wherein the surfactant is an anionic surfactant.

11. The detergent bar of claim 10 , wherein the surfactant is linear alkylbenzene sulfonate.

12. The detergent bar of claim 9 , wherein the detergent bar contains no more than 1 wt % of any cellulose derivative other than hydroxypropyl methylcellulose and hydroxyethyl cellulose.

13. The detergent bar of claim 12 , wherein the hydroxypropyl methylcellulose has a methoxyl content of 15 and 30 wt % and a hydroxypropoxyl content of 10 and 30%; and the hydroxyethylcellulose has an ethylene oxide molar substitution of 0.5 to 5.

14. The detergent bar of claim 13 , wherein the hydroxypropyl methyl cellulose has a weight average molecular weight of 700,000 to 2,500,000.

15. The detergent bar of claim 14 , wherein the hydroxypropyl methyl cellulose has a weight average molecular weight of 800,000 to 2,500,000.

16. The detergent bar of claim 15 , wherein the detergent bar contains 0.09 to 0.5 wt % of the polyethylene glycol.

17. The detergent bar of claim 9 , wherein the minerals are selected from metal salts of carbonate, silicate, sulfate and bicarbonate; and clay.

18. The detergent bar of claim 9 , wherein the minerals are selected from metal salts of carbonate, silicate, sulfate and bicarbonate.

Assignments (6)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2021
From: KRASNANSKY, ROBERT
To: ROHM AND HAAS COMPANY
Reel/Frame 057424/0922 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2021
From: ROHM AND HAAS COMPANY
To: DOW GLOBAL TECHNOLOGIES LLC
Reel/Frame 057425/0099 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2021
From: NAD, SAUGATA; RAO, RAVI
To: DOW CHEMICAL INTERNATIONAL PVT. LTD.
Reel/Frame 057425/0354 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2021
From: DOW CHEMICAL INTERNATIONAL PVT. LTD.
To: DOW INTERNATIONAL TECHNOLOGY CORPORATION
Reel/Frame 057425/0903 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2021
From: DOW INTERNATIONAL TECHNOLOGY CORPORATION
To: THE DOW CHEMICAL COMPANY
Reel/Frame 057426/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2021
From: THE DOW CHEMICAL COMPANY
To: DOW GLOBAL TECHNOLOGIES LLC
Reel/Frame 057426/0059 →
Priority Claims (1)
IN 201611033456 · Sep 30, 2016 · national
Continuity (1)
Related Publication 20200017804A1 · Jan 16, 2020