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
US10131746B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10131746-B2 |
| Application number | US-201414912160-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 15, 2014 |
| Priority date | Aug 15, 2013 |
| Publication date | Nov 20, 2018 |
| Grant date | Nov 20, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
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 tetravalent 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 four 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 an acrylic polyol in the presence of at least one catalyst selected from the group consisting of Titanium(IV) isopropoxide, Zr(IV) acetylacetonate, and Zirconium (IV) 2-ethylhexanoate, wherein the process exhibits equal to or greater than 50% hydroxyl conversion at a reaction time from 10 to 20 hours and a reaction temperature from 138-142° C., to form a polycarbamate polymer, and separating a solid reaction product wherein the solid reaction product contains less than 2.5 wt % combined amounts of biuret, cyanuric acid and polyallophanate. 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. 4. A polycarbamate produced according to the process of claim 1 , wherein said polycarbamate includes less than 2.5 wt % of combined amounts of biuret, cyanuric acid and polyallophanate. 5. A coating comprising the polycarbamate according to claim 1 . 6. The polycarbamate of claim 4 , wherein a 100% solids product of the polycarbamate comprises less than 1 wt % of total biuret, cyanuric acid, and polyallophanate.
Assignees
Inventors
Classifications
from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group · CPC title
acyclic · CPC title
acyclic · CPC title
Polyurethanes · CPC title
- C08G71/04Primary
Polyurethanes · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10131746B2 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 tetravalent 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 four eq…
- 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 Nov 20 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).