Methods and apparatus for hygromorphic shape control
US-2016121546-A1 · May 5, 2016 · US
Hygromorphic polymers and copolymers having humidity-driven motility
US9932445B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9932445-B2 |
| Application number | US-201615076810-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 22, 2016 |
| Priority date | Mar 11, 2016 |
| Publication date | Apr 3, 2018 |
| Grant date | Apr 3, 2018 |
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Abstract
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New diamine monomers bearing sulfone terminated pendant groups, as well as methods for making the same, are provided. The diamine monomers are useful toward making polyamide, polyimide, and poly(amide-imide) polymers and copolymers, which possess hygromorphic properties and demonstrate humidity driven motility.
First claim
Opening claim text (preview).
What is claimed is: 1. An aryl diamine monomer comprising a sulfone moiety and having a general chemical formula: wherein W is selected from the group consisting of NH and NR 1 , wherein R 1 and R 2 are independently selected from the group consisting of substituted or unsubstituted C1-C7 alkyl groups and substituted or unsubstituted phenyl groups. 2. The aryl diamine monomer of claim 1 , wherein R 1 is a methyl group or an unsubstituted phenyl group. 3. The aryl diamine monomer of claim 2 , wherein R 1 is a methyl group; and wherein R 2 is a methyl group or an unsubstituted phenyl group. 4. The aryl diamine monomer of claim 1 , wherein R 2 is an unsubstituted C2-C7 alkyl groups methyl group or an unsubstituted phenyl group. 5. A method of synthesizing the aryl diamine monomer of claim 1 , comprising: reducing a 3,5-dinitrobenzoic acid derivative comprising a sulfone moiety and having a general chemical formula: 6. The method of claim 5 , further comprising: reacting 3,5-dinitrobenzoic acid or 3,5-dinitrobenzoic acid halide with a sulfonyl ethyl moiety having a general chemical formula: 7. The method of claim 6 , wherein the sulfonyl ethyl moiety is selected from the group consisting of 2-(methylsulfonyl)ethanol, 2-(methylsulfonyl)ethylamine,2-(methylsulfonyl)-N-methyl-ethylamine, 2-(methylsulfonyl)-N-phenyl-ethylamine, and salts thereof.
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Classifications
with amino and carboxyl groups bound in ortho-position · CPC title
Preparation of sulfones; Preparation of sulfoxides · CPC title
- C08G73/14Primary
Polyamide-imides · CPC title
from aromatic diamines and aromatic dicarboxylic acids with both amino and carboxylic groups aromatically bound · CPC title
comprising halogen-containing substituents · CPC title
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- What does patent US9932445B2 cover?
- New diamine monomers bearing sulfone terminated pendant groups, as well as methods for making the same, are provided. The diamine monomers are useful toward making polyamide, polyimide, and poly(amide-imide) polymers and copolymers, which possess hygromorphic properties and demonstrate humidity driven motility.
- Who is the assignee on this patent?
- Us Gov Air Force, Us Air Force
- What technology area does this patent fall under?
- Primary CPC classification C08G73/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 03 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).