Cross-linkable coating composition and method of producing the same
US-9604721-B2 · Mar 28, 2017 · US
Process to produce polycarbamate, polycarbamate produced thereby and a coating composition comprising the polycarbamate
US10000610B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10000610-B2 |
| Application number | US-201414912161-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 15, 2014 |
| Priority date | Aug 15, 2013 |
| Publication date | Jun 19, 2018 |
| Grant date | Jun 19, 2018 |
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Abstract
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A process to prepare polycarbamate comprising adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of compounds having the following formula M m Z n ; wherein M is a divalent metal, and Z is an anionic functionality or a functionality capable of forming a covalent bond with M and wherein n times a valence number of Z equals X and m times two equals Y wherein the absolute value of X equals the absolute value of Y is provided. Also provided are a polycarbamate produced according to the process and a coating composition comprising the polycarbamate.
First claim
Opening claim text (preview).
We claim: 1. A process to prepare polycarbamate comprising: adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of Zn 2-ethylhexanoate, Zn acetylacetonate, Mn(II) acetylacetonate wherein the process exhibits equal to or greater than 45% hydroxyl conversion at a reaction time from 10 to 25 hours and a reaction temperature from 130 to 145° C.; recovering a solid product comprising polycarbamate and less than 2 wt % polyallophanate based on a total weight of the solid product. 2. The process according to claim 1 , wherein a second catalyst selected from the group consisting of carbamylation catalysts is present. 3. The process according to claim 2 , wherein the second catalyst is dibutyltin oxide and/or dibutyltin acetate.
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Classifications
acyclic · CPC title
from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group · CPC title
- C08G71/04Primary
Polyurethanes · CPC title
acyclic · CPC title
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- What does patent US10000610B2 cover?
- A process to prepare polycarbamate comprising adding urea to a polyol in the presence of at least one catalyst selected from the group consisting of compounds having the following formula M m Z n ; wherein M is a divalent metal, and Z is an anionic functionality or a functionality capable of forming a covalent bond with M and wherein n times a valence number of Z equals X and m times two equals…
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C08G71/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 19 2018 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).