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US-11991912-B2 · May 21, 2024 · US
Process for bonding hydrophobic surfaces having cationic guar-containing primer coating thereon
US11028282B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11028282-B2 |
| Application number | US-201615769425-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 20, 2016 |
| Priority date | Oct 20, 2015 |
| Publication date | Jun 8, 2021 |
| Grant date | Jun 8, 2021 |
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- Title
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- Abstract
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Abstract
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The instant invention relates to primary coating compositions that comprises a cationic polysaccharide, to be applied on a hydrophobic surface before a subsequent application of a polar or water based coating composition, such a as a paint or an adhesive.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for bonding two hydrophobic surfaces, the process comprising: (E1) contacting the two surfaces at least on certain zones with a primary coating composition consisting essentially of a cationic polysaccharide, wherein the cationic polysaccharide is a cationic guar, and wherein the composition is free of ionic surfactant, whereby a coating based on said cationic polysaccharide is obtained on said zones of the surfaces, (E2) injecting an aqueous composition, wherein the aqueous composition is an adhesive, between all or part of the zones of the surfaces covered by the cationic polysaccharide, as obtained in step (E1). 2. The process according to claim 1 , wherein the cationic guar has a molecular weight between 20,000 and 5,000,000 g/mol. 3. The process according to claim 1 , wherein the cationic guar is guar modified by quaternary ammonium cationic groups. 4. The process according to claim 3 , wherein the quaternary ammonium cationic groups are ammonium groups carrying three radicals which are identical or different and selected from the group consisting of hydrogen and alkyl radical having from 1 to 22 carbon atoms. 5. The process according to claim 4 , wherein the quaternary ammonium cationic groups are trialkylammonium. 6. The process of claim 1 , wherein the adhesive is a waterborne adhesive.
Assignees
Inventors
Classifications
Ethers · CPC title
- C09D101/288Primary
substituted with nitrogen containing radicals · CPC title
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title
water-based adhesive · CPC title
characterised by using adhesives · CPC title
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Frequently asked questions
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- What does patent US11028282B2 cover?
- The instant invention relates to primary coating compositions that comprises a cationic polysaccharide, to be applied on a hydrophobic surface before a subsequent application of a polar or water based coating composition, such a as a paint or an adhesive.
- Who is the assignee on this patent?
- Rhodia Operations
- What technology area does this patent fall under?
- Primary CPC classification C09D101/288. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 08 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).