-
公开(公告)号:US20200048418A1
公开(公告)日:2020-02-13
申请号:US16498791
申请日:2018-03-27
Applicant: BASF SE , VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Inventor: Axel Wilms , Arnold Schneller , Joseph M. Dennis , Nicholas G. Moon , Timothy E. Long
Abstract: The present invention relates to a process for preparing a polyarylenesulfone/polyester block copolymer (P) and to the polyarylenesulfone/polyester block copolymer (P) as such.
-
公开(公告)号:US11618832B2
公开(公告)日:2023-04-04
申请号:US16325991
申请日:2017-08-17
Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Inventor: Maruti Hegde , Timothy E. Long , Viswanath Meenakshisundaram , Christopher B. Williams , Nicholas Chartrain
IPC: C08F2/46 , C08F2/50 , C08G61/04 , C09D11/101 , B33Y70/00 , C09D11/102 , B33Y10/00 , B29C64/135
Abstract: Polymer resins for the vat photopolymerization of thermoplastics are provided, in particular for the vat photopolymerization of thermoplastics with exception thermal stability and mechanical properties. In some aspects, the polymer resins are prepared by ring opening of an aromatic dianhydride with an alcohol containing an acrylate or methacrylate to produce a photocrosslinkable diacid monomer; conversion of the photocrosslinkable diacid monomer to a photocrosslinkable diacyl chloride; and polymerization of the photocrosslinkable diacyl chloride with an aromatic diamine to produce a photocrosslinkable precursor polymer. Upon crosslinking and drying, a thermal imidization can yield aromatic polyimide polymers with high yield and with micron-scale structural resolution.
-
公开(公告)号:US20200369831A1
公开(公告)日:2020-11-26
申请号:US16969826
申请日:2019-02-13
Applicant: Virginia Tech Intellectual Properties, Inc.
Abstract: In various aspects, a polymer resin is provided for vat photopolymerization. The resin can include a polyamic acid salt formed from the addition of a photocrosslinkable amine to a polyamic acid. The resin can include a photoinitiator suitable for initiating crosslinking of the photocrosslinkable amine when exposed to a light source of a suitable wavelength and intensity. The polyamic acid can be formed, for instance, by the addition of a diamine to a suitable dianhydride. Methods of additive manufacturing using the resins are also provided.
-
公开(公告)号:US20200262970A1
公开(公告)日:2020-08-20
申请号:US16462101
申请日:2017-10-18
Inventor: Hans Eliot Edling , Haoyu Liu , Ryan J. Mondshein , Timothy E. Long , S. Richard Turner , Ting Chen
IPC: C08G63/185 , D01F6/84 , C08J5/18
Abstract: Copolyesters having improved properties based on a diacid component of 4,4′-biphenyl dicarboxylic acid or 3,4′-biphenyl dicarboxylic acid and a mixed diol component, such as 1,4 cyclohexanedimethanol (CHDM) with ethylene glycol or neopentyl glycol (NPG), e.g., poly(4,4′-biphenyl dicarboxylate-(ethylene glycol-co-CHDM)), poly(4,4′-biphenyl dicarboxylate-(NPG-co-CHDM)), poly(3,4′-biphenyl dicarboxylate-(ethylene glycol-co-CHDM)), poly(3,4′-biphenyl dicarboxylate-(NPG-co-CHDM)); methods of making the copolyesters; and shaped articles made of the copolyesters. Also, polyesters based on biphenyl dicarboxylic acid and NPG; methods of making the polyesters; and shaped articles made of the polyesters.
-
公开(公告)号:US10287402B2
公开(公告)日:2019-05-14
申请号:US15485389
申请日:2017-04-12
Inventor: Yong Yang , Donna S. Davis , Peijun Jiang , Timothy E. Long , Sachin Bobade
Abstract: A polycarbonate-polyolefin block copolymer and a process to form a polycarbonate-polyolefin block copolymer by combining mono- or di-hydroxyaryl with vinyl/vinylidene terminated polyolefin to form a polyolefin hydroxyaryl moiety, and combining the polyolefin hydroxyaryl moiety with di-hydroxyaryl and di-substituted carbonyl monomers to form a polycarbonate-polyolefin block copolymer.
-
公开(公告)号:US20170313825A1
公开(公告)日:2017-11-02
申请号:US15485389
申请日:2017-04-12
Inventor: Yong Yang , Donna S. Davis , Peijun Jiang , Timothy E. Long , Sachin Bobade
IPC: C08G81/02 , C08F110/06
CPC classification number: C08G81/027 , C08G64/14 , C08G64/18
Abstract: A polycarbonate-polyolefin block copolymer and a process to form a polycarbonate-polyolefin block copolymer by combining mono- or di-hydroxyaryl with vinyl/vinylidene terminated polyolefin to form a polyolefin hydroxyaryl moiety, and combining the polyolefin hydroxyaryl moiety with di-hydroxyaryl and di-substituted carbonyl monomers to form a polycarbonate-polyolefin block copolymer.
-
公开(公告)号:US10767005B2
公开(公告)日:2020-09-08
申请号:US15571025
申请日:2016-10-07
Inventor: Ryan J. Mondschein , Haoyu Liu , Ting Chen , Timothy E. Long , S. Richard Turner
IPC: C08G63/185 , C08G63/83 , C08J5/00 , C08J5/18 , C08G63/85
Abstract: Bibenzoate copolyesters are based on (4,4′-biphenyl dicarboxylic acid-co-3,4′-biphenyl dicarboxylic acid) as the diacid component, and on an alicyclic diol compound such as 1,4-cyclohexanedimethanol as a portion of the diol component. Copolyesters are based on 4,4′-biphenyl dicarboxylic acid, and/or 3,4′-biphenyl dicarboxylic acid as the diacid component and may include a multifunctional acid. Copolymers may optionally base an essentially amorphous morphology, high glass transition temperature, high elongation at break, and/or high melting temperature. A method to make the copolymers controls the characteristics of the copolyester selected from one or a combination of amorphous morphology or degree of crystallinity, Tg, Tm, tensile modulus, flexural modulus, elongation at break, and so on, by selecting the proportions of the 4,4′-biphenyl dicarboxylic acid or ester producing equivalent thereof, 3,4′-biphenyl dicarboxylic acid or ester producing equivalent thereof, and/or the proportion of the 1,4-cyclohexanedimethanol in the diol component.
-
公开(公告)号:US20200262971A1
公开(公告)日:2020-08-20
申请号:US16061280
申请日:2016-10-07
Inventor: Haoyu Liu , Ryan J. Mondschein , Ting Chen , Timothy E. Long , S. Richard Turner
IPC: C08G63/199 , C08G63/183 , C08G63/185
Abstract: Copolyesters are based on a diacid component containing terephthalate and 4,4′-biphenyl dicarboxylate or 3,4′-biphenyl dicarboxylate, and a diol component containing an alkylene diol, e.g., ethylene glycol or NPG, and an alicyclic polyhydroxyl compound, e.g., CHDM. The copolyesters may have a glass transition temperature more than 100° C. and mechanical, thermal and/or barrier characteristics at least comparable to some commercially available copolyesters. A method to control the morphology and properties of a copolyester involves contacting diacid and diol components in the presence of a catalyst, selecting proportions of terephthalic and 4,4′-biphenyl dicarboxylic or 3,4′-biphenyl dicarboxylic acids or ester producing equivalents thereof in the diacid component, and selecting the alkylene diol and proportions of the CHDM (or other alicyclic polyhydroxyl compound) and the alkylene diol in the diol component, to obtain the desired morphology and other properties.
-
公开(公告)号:US12220860B2
公开(公告)日:2025-02-11
申请号:US17903013
申请日:2022-09-05
Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Abstract: Photocurable colloid binders are provided that overcome deficiencies associated with 3D printing of high molecular weight polymers via VAT photopolymerization. Methods of additive manufacturing are also provided using the binders. The approaches described herein effectively decouple the viscosity-molecular weight relationship by synthesizing and processing photo-reactive aqueous colloids that are sequestered within a photocrosslinkable scaffold. Sequestering polymers within discrete internal phases prevents inter-particle entanglement of the polymer chains, thus ensuring low viscosity. VP of polymer colloids results in a solid green body embedded with high molecular weight polymer particles. A post-processing heated drying step allows the polymers to coalesce and further entangle, forming a semi-interpenetrating network with mechanical performance of the high molecular weight material. The resins can further include inorganic particles such as silica and other ceramics, metal particles, and the like. The coalescence can result in the particles being encapsulated in polymer, yielding unique hybrid materials with tunable properties.
-
公开(公告)号:US12018127B2
公开(公告)日:2024-06-25
申请号:US16969826
申请日:2019-02-13
Applicant: Virginia Tech Intellectual Properties, Inc.
IPC: C08G73/10 , B29C64/124 , B29C64/30 , B33Y10/00 , B33Y40/20 , B33Y70/00 , B29K79/00 , B29K105/00
CPC classification number: C08G73/105 , B29C64/124 , B29C64/30 , B33Y10/00 , B33Y40/20 , B33Y70/00 , B29K2079/08 , B29K2105/0002
Abstract: In various aspects, a polymer resin is provided for vat photopolymerization. The resin can include a polyamic acid salt formed from the addition of a photocrosslinkable amine to a polyamic acid. The resin can include a photoinitiator suitable for initiating crosslinking of the photocrosslinkable amine when exposed to a light source of a suitable wavelength and intensity. The polyamic acid can be formed, for instance, by the addition of a diamine to a suitable dianhydride. Methods of additive manufacturing using the resins are also provided.
-
-
-
-
-
-
-
-
-