Thermally Reversible Crosslinked Polyurethane
US-2017226271-A1 · Aug 10, 2017 · US
US10894853B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10894853-B2 |
| Application number | US-201816179296-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 2, 2018 |
| Priority date | Nov 2, 2017 |
| Publication date | Jan 19, 2021 |
| Grant date | Jan 19, 2021 |
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When formula I represents a compound, x is an integer of 1˜5; A including a group formed of ketone, amido, imide, imido, phenyl ether or enol ether group; G is a direct bond, —O—, —N—, —Ar—NH—(CH2)b—, —Ar—O—(CH2)b—, —Ar—O—(CH2)a—NH—(CH2)b—, —(CH2)a—NH—(CH2)b—, —(CH2)a—O—(CH2)b— or —(CH2)a—CH(OH)—(CH2)b—NH—; Ar is substituted or unsubstituted arylene group; a is an integer of 1 to 5; and b is an integer of 0 to 5.
Opening claim text (preview).
What is claimed is: 1. A furan-modified oligomer having a structure represented by Formula II: wherein, y is an integer of 1 to 5; D is a direct bond, —O—, —Ar 2 —NH—(CH 2 ) d —, —Ar 2 —O—(CH 2 ) d —, —Ar 2 —O—(CH 2 ) c —NH—(CH 2 ) d —, —(CH 2 ) c —NH—(CH 2 ) d —, —(CH 2 ) c —O—(CH 2 ) d — or —(CH 2 ) c —CH(OH)—(CH 2 ) d —NH—; Ar 2 is substituted or unsubstituted arylene group; c is an integer of 1 to 5; and d is an integer of 0 to 5, wherein the furan-modified oligomer has a number average molecular weight from 1000 to 12000; wherein B is B is connected to D at position represented by asterisk (*); m is an integer of 7 to 200; n is an integer of 7 to 200; each of p, r and s is an integer of 1 to 5; q is an integer of 5 to 50; z is an integer of 5 to 20; each of R 1 , R 2 , R 3 , R 4 is independently C 1 -C 5 alkyl; T 1 is a direct bond, C 1 -C 12 linear or branched alkyl, —O—, —S— or —NH—; Q is wherein, each of R 9 , R 10 and R 11 is independently CH 3 or C 2 H 5 , T 2 is C 1 -C 12 linear or branched alkyl, and each of i, j and k is an integer of 1 to 5. 2. The furan-modified oligomer according to claim 1 , wherein Ar 2 is substituted or unsubstituted phenylene, biphenylene, naphthylene, thienylene, indolylene, phenanthrylene, indenylene, anthrylene, or fluorenylene group. 3. The furan-modified oligomer according to claim 1 , wherein Ar 2 is phenylene, biphenylene, naphthylene, thienylene, indolylene, phenanthrylene, indenylene, anthrylene, or fluorenylene group with substitution groups of one to four C 1 -C 6 alkyl groups.
Singly bound oxygen atoms · CPC title
Macromolecular compounds obtained by polymerising monomers on to polymers of carbocyclic or heterocyclic monomers as defined respectively in group C08F32/00 or in group C08F34/00 · CPC title
on to polyphenylene oxides · CPC title
from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group · CPC title
from polycyanurates · CPC title
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