Anti-redeposition additive for laundry detergent
US-2021363471-A1 · Nov 25, 2021 · US
Anti-redeposition additive for laundry detergent
US11326133B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11326133-B2 |
| Application number | US-201916975591-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 21, 2019 |
| Priority date | Apr 10, 2018 |
| Publication date | May 10, 2022 |
| Grant date | May 10, 2022 |
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Abstract
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A laundry detergent composition comprising an anti-redeposition agent, a surfactant, and optionally a builder, wherein the anti-redeposition agent is a polymer comprising polymerized units of: (a) from 5 to 40 wt % of at least one nitrogen-containing ethylenically unsaturated monomer having at least one pKa value from 6 to 11.5, and (b) from 60 to 95 wt % of at least one ethylenically unsaturated carboxylic acid monomer.
First claim
Opening claim text (preview).
The invention claimed is: 1. A laundry detergent composition comprising an anti-redeposition agent, a surfactant, and optionally a builder, wherein the anti-redeposition agent is a polymer comprising polymerized units of: (a) from 8 to 15 wt % of at least one di-(C 1-4 alkyl)aminoethyl or di-(C 1-4 alkyl)aminopropyl (meth)acrylate or (meth)acrylamide having at least one pKa value from 7 to 11, and (b) from 85 to 92 wt % of at least one (meth) acrylic acid; wherein the polymer has no more than 0.1 wt % of polymerized monomer units of alkylene oxide and wherein the polymer comprises no more than 0.01 wt % of polymerized units of multiethylenically unsaturated monomer. 2. The composition of claim 1 in which the polymer has M w from 5,000 to 70,000. 3. The composition of claim 2 in which the polymer comprises polymerized units of from 7 to 30 wt % of at least one di-(C 1 -C 4 alkyl)aminoethyl or di-(C 1 -C 4 alkyl)aminopropyl (meth)acrylate or (meth)acrylamide and from 70 to 93 wt % of at least one (meth)acrylic acid. 4. The composition of claim 3 in which the surfactant comprises at least one anionic surfactant which is a sulfate or sulfonate. 5. The composition of claim 4 in which the di-(C 1 -C 4 alkyl)aminoethyl or di-(C 1 -C 4 alkyl)aminopropyl (meth)acrylate or (meth)acrylamide is 2-(dimethylamino)ethyl methacrylate or N-[3-(dimethylamino)propyl]methacrylamide.
Assignees
Inventors
Classifications
Sulfuric acid esters · CPC title
(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines · CPC title
- C11D3/0036Primary
Soil deposition preventing compositions; Antiredeposition agents · CPC title
(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions · CPC title
in liquid compositions · CPC title
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- What does patent US11326133B2 cover?
- A laundry detergent composition comprising an anti-redeposition agent, a surfactant, and optionally a builder, wherein the anti-redeposition agent is a polymer comprising polymerized units of: (a) from 5 to 40 wt % of at least one nitrogen-containing ethylenically unsaturated monomer having at least one pKa value from 6 to 11.5, and (b) from 60 to 95 wt % of at least one ethylenically unsaturat…
- Who is the assignee on this patent?
- Rohm & Haas, Union Carbide Corp
- What technology area does this patent fall under?
- Primary CPC classification C11D3/0036. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 10 2022 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).