Systems and methods for defining a surface contour of a layered charge of material
US-2015352795-A1 · Dec 10, 2015 · US
Semi-IPN polyurethane/polyurea protective films
US9718242B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9718242-B2 |
| Application number | US-201414558431-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 2, 2014 |
| Priority date | Feb 8, 2008 |
| Publication date | Aug 1, 2017 |
| Grant date | Aug 1, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Briefly, the present disclosure provides a film, tape or outer layer of a composite part comprising: a) at least one layer comprising a crosslinked polymer selected from the group consisting of crosslinked polyurethane, crosslinked polyurea, and crosslinked mixed polyurethane/polyurea polymer; and in some embodiments b) an adhesive layer. In some embodiments the layer additionally comprises a non-crosslinked polymer forming a semi-IPN with the crosslinked polymer. In some embodiments the non-crosslinked polymer may be selected from the group consisting of polyurethane, polyurea, and mixed polyurethane/polyurea polymer. In some embodiments the crosslinked polymer may additionally comprise an acrylate-containing component.
First claim
Opening claim text (preview).
We claim: 1. A method of making a part comprising the steps of: a) lining a mold with a film or tape which comprises a semi-interpenetrating network (semi-IPN) of: i) a crosslinked component derived from a urethane acrylate and ii) a non-crosslinked component which is a thermoplastic polyurethane; and b) performing a molding process such that after the molding process the resulting part has an outer surface of the film or tape. 2. The method according to claim 1 wherein the molded part comprises a molded material selected from the group consisting of thermoplastic polymers, thermoset polymers, curable polymers, composites, fiberglass, ceramics and clays. 3. The method according to claim 2 wherein the molded material is a resin matrix composite material. 4. The method according to claim 2 wherein the molded material is a fiber reinforced resin matrix composite material. 5. The method according to claim 1 wherein the molded part comprises a molded material and wherein the molding process comprises curing the molded material. 6. The method according to claim 1 wherein the molded part comprises a molded material and wherein the molding process comprises heat cure of the molded material. 7. The method according to claim 6 wherein the molded material is a resin matrix composite material. 8. The method according to claim 6 wherein the molded material is a fiber reinforced resin matrix composite material. 9. The method according to claim 1 , wherein the urethane acrylate is at least partially miscible in the thermoplastic polyurethane.
Assignees
Inventors
Classifications
Compositions for creating interpenetrating networks · CPC title
Polyureas · CPC title
Three or more layers · CPC title
Polyurethanes · CPC title
- B29C70/78Primary
Moulding material on one side only of the preformed part · CPC title
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Frequently asked questions
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- What does patent US9718242B2 cover?
- Briefly, the present disclosure provides a film, tape or outer layer of a composite part comprising: a) at least one layer comprising a crosslinked polymer selected from the group consisting of crosslinked polyurethane, crosslinked polyurea, and crosslinked mixed polyurethane/polyurea polymer; and in some embodiments b) an adhesive layer. In some embodiments the layer additionally comprises a n…
- Who is the assignee on this patent?
- 3M Innovative Properties Co
- What technology area does this patent fall under?
- Primary CPC classification B29C70/78. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 01 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).