Non-hazardous water-based polyurethane dispersion
US-12110373-B2 · Oct 8, 2024 · US
A binder composition
US2023174703A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023174703-A1 |
| Application number | US-202017998435-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 11, 2020 |
| Priority date | May 11, 2020 |
| Publication date | Jun 8, 2023 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present disclosure generally provides binder compositions and more specially polyfunctional isocyanate binder compositions which can be used in the preparation of composite wood panels, wherein the binder composition comprising (a) a polyfunctional isocyanate or an isocyanate prepolymer, wherein the isocyanate prepolymer is obtained by reacting a polyfunctional isocyanate with a polyfunctional polyol; (b) a tackifier; and (c) a phosphate ester. The compositions have high tack capability and improved mold releasing capability.
First claim
Opening claim text (preview).
1 . A binder composition comprising: (a) a polyfunctional isocyanate or an isocyanate prepolymer, wherein the isocyanate prepolymer is obtained by reacting a polyfunctional isocyanate with a polyfunctional polyol; (b) a tackifier; and (c) a phosphate ester. 2 . The binder composition of claim 1 wherein the polyfunctional isocyanate is a polymeric MDI or an MDI isomer mixture or a mixture thereof. 3 . The binder composition of claim 1 wherein the molecular weight of the tackifier is in an amount ranging from about 10000 to about 2000000. 4 . The binder composition of claim 1 wherein the tackifier is a homopolymer of vinyl acetate or a copolymer of vinyl acetate or a mixture thereof. 5 . The binder composition of claim 1 wherein the phosphate ester is an alkylether phosphate or a mixture of alkyl phosphate and alkylether phosphate. 6 . The binder composition of claim 1 wherein the molecular weight of the phosphate ester is in an amount ranging from about 200 to about 2000, preferably from about 300 to about 1000. 7 . The binder composition of claim 1 wherein the weight ratio of the tackifier to the phosphate ester is in the range from about 30:1 to about 20000:1. 8 . The binder composition of claim 1 wherein the binder composition further comprises a wax. 9 . A process for making the binder composition of claim 1 , comprising mixing the tackifier and the phosphate ester in a first step and then adding the polyfunctional isocyanate or the isocyanate prepolymer in a second step. 10 . A composite wood comprising the binder composition of claim 1 .
Assignees
Inventors
Classifications
Phosphate compounds · CPC title
- C08G18/10Primary
Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step · CPC title
- C08G18/7664Primary
containing alkylene polyphenyl groups · CPC title
Polyurethanes · CPC title
Polyurethanes · CPC title
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Frequently asked questions
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- What does patent US2023174703A1 cover?
- The present disclosure generally provides binder compositions and more specially polyfunctional isocyanate binder compositions which can be used in the preparation of composite wood panels, wherein the binder composition comprising (a) a polyfunctional isocyanate or an isocyanate prepolymer, wherein the isocyanate prepolymer is obtained by reacting a polyfunctional isocyanate with a polyfunctio…
- Who is the assignee on this patent?
- Huntsman Int Llc
- What technology area does this patent fall under?
- Primary CPC classification C08G18/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jun 08 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).