Industrial Technology Research Institute

Tsinghua University

Kuei-Yi Chuang

Kuo-Chan Chiou

Feng-Po Tseng

Ho-Hsiu Chou

Yen-Chun Liu

Lu-Shih Liao

A healable and recyclable polyimide polymer resin includes a chemical structural unit represented by formula (I), which is defined in the description. The chemical structural unit represented by the formula (I) bonds to at least one condensation-polymerizable monomer, so as to form the healable and recyclable polyimide polymer resin, and the condensation-polymerizable monomer is a diamine monomer or a dianhydride monomer.

Healable and recyclable polyimide polymer resin, healing method and recycling method thereof

A degradation method of thermosetting resin is provided. The method includes the following steps, for example, a first resin composition is provided. The resin in the first resin composition includes a carbon-nitrogen bond, an ether bond, an ester bond or a combination thereof. The first resin composition and a catalyst composition are mixed to perform a degradation reaction to form a second resin composition. The catalyst composition includes a transition metal compound and a group IIIA metal compound. The second resin composition includes a resin monomer or an oligomer thereof having functional groups. The functional group includes an amine group, a hydroxyl group, an ester group, an acid group or a combination thereof. A catalyst composition used in the degradation method and a resin composition obtained by the degradation method are also provided.

Method for degradating thermosetting resin, catalyst composition used therein and resin composition obtained thereby

A reversible crosslinking reactant composition is provided. The composition includes at least one furan-group-containing oligomer and a bismaleimide compound having a structure represented by Formula (II) wherein the furan-group-containing oligomer is an oligomer having a structure represented by Formula (IV), an oligomer having a structure represented by Formula (V), or an oligomer having a first repeating unit and a second repeating unit, wherein the first repeating unit has a structure represented by Formula (VI), the second repeating unit has a structure represented by Formula (VII), wherein R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, R, q, z and E are as defined in specification.

Reversible crosslinking reactant composition

The invention provides a furan-modified compound or oligomer. The compound has a structure represented by Formula I:  When formula I represents a compound, x is an integer of 1&#x2dc;5; A including a group formed of ketone, amido, imide, imido, phenyl ether or enol ether group; G is a direct bond, &#x2014;O&#x2014;, &#x2014;N&#x2014;, &#x2014;Ar&#x2014;NH&#x2014;(CH)&#x2014;, &#x2014;Ar&#x2014;O&#x2014;(CH)&#x2014;, &#x2014;Ar&#x2014;O&#x2014;(CH)&#x2014;NH&#x2014;(CH)&#x2014;, &#x2014;(CH)&#x2014;NH&#x2014;(CH)&#x2014;, &#x2014;(CH)&#x2014;O&#x2014;(CH)&#x2014; or &#x2014;(CH)&#x2014;CH(OH)&#x2014;(CH)&#x2014;NH&#x2014;; Ar is substituted or unsubstituted arylene group; a is an integer of 1 to 5; and b is an integer of 0 to 5.

Furan-modified compound and oligomer

A reversible crosslinking reactant composition is provided. The composition includes at least one furan-group-containing oligomer having a structure represented by Formula (I) and a bismaleimide compound having a structure represented by Formula (II), wherein the equivalent ratio of the furan group of the furan-group-containing oligomer having a structure represented by Formula (I) to the maleimide group of the bismaleimide compound having a structure represented by Formula (II) is from 0.5:1 to 1:0.5.

A polymer is provided. The polymer includes a first repeating unit represented by Formula (I) and a second repeating unit represented by Formula (II): wherein Yand Yare independently &#x2014;H, &#x2014;CH, or &#x2014;CHCH; n is an integer ranging from 1 to 25; and the molar ratio of the first repeating unit to the second repeating unit is from 5:95 to 15:45. A resin composition including the aforementioned polymer is also provided.

Polymers and resin composition employing the same

A resin formulation is provided. The resin formulation includes carboxy anhydride at 100 parts by weight, first diisocyanate having the following formula (I) at 20-90 parts by weight, second diisocyanate having the following formulas (II), (III) or a combination thereof at 45-103 parts by weight, and bismaleimide (BMI) at 50-200 parts by weight. A resin polymer and a composite material including the resin polymer are also provided.  In formulas (I), (II) and (III), A includes benzene or cyclohexane, Q includes C1-C12 alkylene, &#x2014;O&#x2014;, &#x2014;S&#x2014; or &#x2014;SO&#x2014;, X includes &#x2014;H, &#x2014;CHor &#x2014;CHCH, Rincludes &#x2014;H, &#x2014;CHor &#x2014;CHCH, and E includes &#x2014;H, &#x2014;CHor &#x2014;CHCH.

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Hsinchu, Taiwan

Kuei-Yi Chuang