Low melting and low viscosity thermoset matrix resins from the Z configuration of polyhydroxy stilbenes
US-10723834-B1 · Jul 28, 2020 · US
Crosslinked polymers with tunable coefficients of thermal expansion
US11739092B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11739092-B2 |
| Application number | US-202117344717-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 10, 2021 |
| Priority date | Jun 15, 2020 |
| Publication date | Aug 29, 2023 |
| Grant date | Aug 29, 2023 |
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- Title
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Abstract
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Curatives and their resulting thermosets and other crosslinked polymers can reduce thermal expansion mismatch between an encapsulant and objects that are encapsulated. This can be accomplished by incorporating a negative CTE moiety into the thermoset resin or polymer backbone. The negative CTE moiety can be a thermal contractile unit that shrinks as a result of thermally induced conversion from a twist-boat to chair or cis/trans isomerization upon heating. Beyond CTE matching, other potential uses for these crosslinked polymers and thermosets include passive energy generation, energy absorption at high strain rates, mechanophores, actuators, and piezoelectric applications.
First claim
Opening claim text (preview).
We claim: 1. A curative comprising a disubstituted-dibenzocyclooctane selected from the group consisting of diamino-dibenzocyclooctane, diepoxide-dibenzocyclooctane, diazido-dibenzocyclooctane, dihydroxy-dibenzocyclooctane, diisocyanate-dibenzocyclooctane, or dianhydride-dibenzocyclooctane wherein the disubstitution consists of a primary amino, epoxide, azido, hydroxy, isocyanate, or anhydride group substituted on each of the benzene rings, respectively. 2. The curative of claim 1 , wherein the diamino-dibenzocyclooctane comprises cis-diamino-dibenzocyclooctane.
Assignees
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Classifications
- C07D471/14Primary
Ortho-condensed systems · CPC title
at least one ring not being six-membered, the other rings being at the most six-membered · CPC title
containing a ring other than a six-membered aromatic ring forming part of at least one of the condensed ring systems · CPC title
- C07D321/12Primary
Eight-membered rings · CPC title
Polyhydroxylic alcohols · CPC title
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- What does patent US11739092B2 cover?
- Curatives and their resulting thermosets and other crosslinked polymers can reduce thermal expansion mismatch between an encapsulant and objects that are encapsulated. This can be accomplished by incorporating a negative CTE moiety into the thermoset resin or polymer backbone. The negative CTE moiety can be a thermal contractile unit that shrinks as a result of thermally induced conversion from…
- Who is the assignee on this patent?
- Nat Tech & Eng Solutions Sandia Llc
- What technology area does this patent fall under?
- Primary CPC classification C07D471/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 29 2023 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).