Functionalized zwitterionic and mixed charge polymers, related hydrogels, and methods for their use
US-10828398-B2 · Nov 10, 2020 · US
Detergent formulation containing mixed-charge polymers and nonionic surfactant
US11118142B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11118142-B2 |
| Application number | US-201816630969-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 20, 2018 |
| Priority date | Jul 24, 2017 |
| Publication date | Sep 14, 2021 |
| Grant date | Sep 14, 2021 |
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- Title
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Abstract
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A detergent formulation comprises 0.5 to 10 weight-percent mixed-charge polymer and one to 10 weight-percent nonionic surfactant, where weight-percent is relative to total detergent formulation weight, and wherein the mixed-charge polymer comprises quaternary ammonium groups and carboxylate groups extending as pendant side groups from the polymer backbone.
First claim
Opening claim text (preview).
The invention claimed is: 1. A detergent formulation comprising 0.5 to 10 weight-percent mixed-charge polymer and one to 10 weight-percent nonionic surfactant, where weight-percent is relative to total detergent formulation weight, and wherein the mixed-charge polymer comprises multiple independent pendant quaternary ammonium functionalities and carboxylate functionalities and wherein the pendant quaternary ammonium group has the structure of Formula I with A attached to the backbone of the polymer: where A is selected from a group consisting of CH 2 and C═O, B is selected from a group consisting of hydrogen, an acetoyl group, and a propionyl group; and C is selected from a group consisting of Formula II and Formula III, where Formula II is where R 1 , R 2 and R 3 are independently selected from a group consisting of C 1 -C 12 alkyl or arylalkyl groups; and Formula III is where R 4 -R 8 are independently selected from a group consisting of hydrogen and C 1 -C 12 alkyl groups. 2. The detergent formulation of claim 1 , wherein the weight-average molecular weight of the mixed-charge polymer is between 2,000 and 100,000 daltons as determined by gel permeation chromatography. 3. The detergent formulation of claim 1 , wherein the detergent formulation contains less than one wt % chloride relative to detergent weight. 4. The detergent formulation of claim 1 , wherein the detergent formulation further comprises 20-60 weight-percent inorganic builder relative to total detergent formulation weight. 5. The detergent formulation of claim 1 , wherein the detergent formulation further comprises 1-30 weight-percent anionic surfactant based on total detergent formulation weight.
Assignees
Inventors
Classifications
- C11D3/3796Primary
Amphoteric polymers or zwitterionic polymers · CPC title
Monomers containing nitrogen · CPC title
(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines · CPC title
Other compounding ingredients characterised by their effect · CPC title
Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof · CPC title
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- What does patent US11118142B2 cover?
- A detergent formulation comprises 0.5 to 10 weight-percent mixed-charge polymer and one to 10 weight-percent nonionic surfactant, where weight-percent is relative to total detergent formulation weight, and wherein the mixed-charge polymer comprises quaternary ammonium groups and carboxylate groups extending as pendant side groups from the polymer backbone.
- Who is the assignee on this patent?
- Rohm & Haas, Union Carbide Corp
- What technology area does this patent fall under?
- Primary CPC classification C11D3/3796. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 14 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).