Light-curable compositions useful for forming composite materials
US-2022213245-A1 · Jul 7, 2022 · US
Molding process and compositions therefor
US11993004B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11993004-B2 |
| Application number | US-202017641289-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 24, 2020 |
| Priority date | Sep 27, 2019 |
| Publication date | May 28, 2024 |
| Grant date | May 28, 2024 |
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 composition comprises a cyanoacrylate polymer and a protected amine. A method comprises: providing a shaped model comprising a cyanoacrylate polymer; preparing an investment having a cavity that corresponds to the shaped model; and heating the shaped model to sufficient temperature that the cyanoacrylate polymer depolymerizes and volatilizes. A hardenable material may be cast in the investment to provide a replica of the shaped model. A curable composition comprises: a cyanoacrylate monomer; a free-radical photoinitiator; and a protected amine, wherein the curable composition is free of compounds that initiate anionic polymerization of the cyanoacrylate monomer at ambient temperature. A method of curing the curable composition is also disclosed.
First claim
Opening claim text (preview).
What is claimed is: 1. A method comprising: making a shaped model comprising a cyanoacrylate polymer; preparing an investment that has a cavity corresponding to the shaped model; and heating the shaped model to sufficient temperature that the cyanoacrylate polymer depolymerizes and volatilizes, wherein the shaped model is formed by an additive manufacturing process comprising successively curing superposed layers of a curable composition comprising: a cyanoacrylate monomer, a free-radical initiator, and a protected amine, and wherein the curable composition is free of unprotected amine. 2. The method of claim 1 , wherein the additive manufacturing process comprises a stereolithographic process, and wherein the free-radical initiator comprises a free-radical photoinitiator.
Assignees
Inventors
Classifications
- B29C64/124Primary
using layers of liquid which are selectively solidified · CPC title
Processes of additive manufacturing · CPC title
Materials specially adapted for additive manufacturing · CPC title
Products made by additive manufacturing · CPC title
Use of polyacetylene or cyanic ester resins, i.e. polymers having one or more carbon-to-carbon triple bonds or derivatives thereof, as moulding material · 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 US11993004B2 cover?
- A composition comprises a cyanoacrylate polymer and a protected amine. A method comprises: providing a shaped model comprising a cyanoacrylate polymer; preparing an investment having a cavity that corresponds to the shaped model; and heating the shaped model to sufficient temperature that the cyanoacrylate polymer depolymerizes and volatilizes. A hardenable material may be cast in the investmen…
- Who is the assignee on this patent?
- 3M Innovative Properties Company
- What technology area does this patent fall under?
- Primary CPC classification B29C64/124. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 28 2024 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).