公开(公告)号：US20240317472A1

公开(公告)日：2024-09-26

申请号：US18269327

申请日：2022-01-07

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Dhwani Kansal

IPC: B65D53/06 ,  F16J15/14

CPC classification number: B65D53/06 ,  F16J15/14

Abstract: The disclosure relates to a method for sealing a cellulosic article in which a sealing solution is applied to one or more cellulosic substrates to form a seal between surfaces thereof. The sealing solution generally includes water, starch, a solid polyol plasticizer, and optionally a liquid polyol plasticizer. Coated surfaces of the cellulosic substrate(s) are then contacted under sufficient conditions to form the seal therebetween, for example after drying and/or with sufficient contact time, contact pressure, contact temperature, etc. The disclosure further relates to a corresponding sealed cellulosic article, for example as formed by the sealing method. The disclosure further relates to a method for recycling in which the sealed cellulosic article is re-pulped, with or without recovery of sealing composition components, then formed into a recycled cellulosic substrate.

公开(公告)号：US20240228689A9

公开(公告)日：2024-07-11

申请号：US18278200

申请日：2022-02-22

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Muhammad Naveed

IPC: C08F299/00 ,  C08F255/02 ,  C08L23/06

CPC classification number: C08F299/00 ,  C08F255/023 ,  C08L23/06 ,  C08F2438/02 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/08 ,  C08L2207/062

Abstract: The disclosure relates to the functionalization of a carbon-carbon backbone (CCB) polymer using a (cyclic) grafting agent, an initiator, and optionally a reversible radical trapping agent. The grafting agent and/or initiator can be particularly selected in terms of their surface energy and/or half-life, respectively, to limit or control undesirable effects associated with reactive melt-processing, such as excessive crosslinking, chain scission, or grafting agent homopolymerization, as well as to improve or control desirable effects associated with reactive melt-processing, such as improved relative graft uniformity or homogeneity on the CCB polymer. In some cases, the grafting agent can further include a functional group to impart some additional or new chemical or physical property to the CCB polymer. In some cases, the reactively melt-processed mixture includes two or more different polymers that are compatibilized via the grafting agent.

公开(公告)号：US11814470B2

公开(公告)日：2023-11-14

申请号：US17471337

申请日：2021-09-10

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Fahad Khan ,  Nazim Uddin

IPC: C08G18/78 ,  C08G18/20 ,  C08G18/24 ,  C08G18/32 ,  C08G18/40 ,  C08G18/48 ,  C08G18/61 ,  C08G18/62 ,  C08G18/65 ,  C08G18/71 ,  C08G18/73 ,  C08G18/75 ,  C08G18/76 ,  C08G18/77 ,  C08G18/79 ,  C09D175/04

CPC classification number: C08G18/7831 ,  C08G18/2063 ,  C08G18/2081 ,  C08G18/244 ,  C08G18/3206 ,  C08G18/4063 ,  C08G18/4829 ,  C08G18/61 ,  C08G18/6216 ,  C08G18/6517 ,  C08G18/71 ,  C08G18/73 ,  C08G18/75 ,  C08G18/76 ,  C08G18/773 ,  C08G18/792 ,  C09D175/04 ,  C08G2150/00

Abstract: The disclosure relates to a thermoset omniphobic composition, which includes a thermoset polymer with first, second, and third backbone segments, urethane groups linking the first and third backbone segments, and urea groups linking the first and second backbone segments. The first, second, and third backbone segments generally correspond to urethane or urea reaction products of polyisocyanate(s), amine-functional hydrophobic polymer(s), and polyol(s), respectively. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, dirt-repellent, and optically clear. The thermoset omniphobic composition can be applied by different coating methods including cast, spin, roll, spray and dip coating methods.

公开(公告)号：US11802204B2

公开(公告)日：2023-10-31

申请号：US16535689

申请日：2019-08-08

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz

IPC: C08L75/04 ,  C08G18/32 ,  C08G18/48 ,  C08G18/38 ,  C08G18/75 ,  C08G18/76 ,  C08L83/04 ,  B05D3/10 ,  B05D5/08 ,  C08G18/73 ,  C09D175/02 ,  C08G18/40 ,  C08G18/79 ,  C08G18/71 ,  C08G18/67 ,  C08G18/61 ,  C08G18/24 ,  C08L75/08 ,  C09D183/10 ,  C08G18/28 ,  C09D175/08 ,  C08G18/10 ,  C08L75/02 ,  C08G18/78 ,  C08G77/458 ,  B05D3/02 ,  C08G77/46

CPC classification number: C08L75/04 ,  B05D3/108 ,  B05D5/08 ,  C08G18/10 ,  C08G18/244 ,  C08G18/289 ,  C08G18/3206 ,  C08G18/384 ,  C08G18/4009 ,  C08G18/48 ,  C08G18/4829 ,  C08G18/61 ,  C08G18/672 ,  C08G18/71 ,  C08G18/73 ,  C08G18/757 ,  C08G18/758 ,  C08G18/7621 ,  C08G18/7642 ,  C08G18/7831 ,  C08G18/792 ,  C08L75/02 ,  C08L75/08 ,  C08L83/04 ,  C09D175/02 ,  C09D175/08 ,  C09D183/10 ,  B05D3/0254 ,  B05D2503/00 ,  C08G77/458 ,  C08G77/46 ,  C08L2201/14 ,  C08L2312/00 ,  C08G18/10 ,  C08G18/73 ,  C08G18/10 ,  C08G18/792 ,  C08G18/10 ,  C08G18/48 ,  C08G18/10 ,  C08G18/289

Abstract: The disclosure relates to a thermoset omniphobic composition (such as an omniphobic polyurethane or epoxy composition) which includes a thermoset polymer with first, second, and third backbone segments. The first, second, and third backbone segments can correspond to urethane or urea reaction products of polyisocyanate(s), amine-functional omniphobic polymer(s), and polyol(s), respectively, for omniphobic polyurethanes. Similarly, the first, second, and third backbone segments can correspond to urea or beta-hydroxy amine reaction products of polyamine(s), isocyanate-functional omniphobic polymer(s), and polyepoxide(s), respectively, for omniphobic epoxies. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition further has favorable barrier properties, for example with respect to water vapor and oxygen transmission as well as water absorption. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, and optically clear.

公开(公告)号：US20230028815A1

公开(公告)日：2023-01-26

申请号：US17785993

申请日：2020-12-17

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Muhammad Naveed

IPC: C09D5/00 ,  C09D133/14 ,  C09D133/08

Abstract: The disclosure relates to a thermoset omniphobic composition with favorable dirt repellency and water resistance properties. The composition can be used as a protective coating on a substrate. Such coatings, when contacted with soil, dirt, dust, etc., remain clean and transparent. The omniphobic composition generally includes a thermoset polymer, an omniphobic polymer, and a filler or nanofiller. The thermoset polymer can be a crosslinked acrylate or other vinyl polymer. The omniphobic polymer can include fluorocarbon and/or siloxane groups for improving water resistance. The nanofiller can include nanosilica and/or nanoclay. The thermoset polymer and the omniphobic polymer together form a matrix for the filler as a dispersed phase throughout the matrix. A coated substrate with the thermoset omniphobic composition thereon exhibits favorable water contact and sliding angles as well as favorable transparency values in dirt accumulation tests.

公开(公告)号：US20220057280A1

公开(公告)日：2022-02-24

申请号：US17401500

申请日：2021-08-13

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Ramadan Mousa Abouomar ,  Gary J. Blanchard ,  Sheryl Blanchard

IPC: G01L1/24 ,  C08K7/26 ,  C08K3/36 ,  C08K5/11

Abstract: The disclosure relates to an impact detection composite as well as related articles and methods. The impact detection composite incorporates a plasticizer and plurality of microcapsules into a polymeric matrix. The microcapsules serve as a means for detecting impact on the composite or a substrate to which it is attached. A sufficiently forceful impact can rupture the microcapsules and release an indicator therein. Presence of the plasticizer in the matrix facilitates diffusion of the indicator through the matrix once released. This allows for rapid detection of the indicator, for example as a visually observable color or color change at an external surface of the impact detection composite. The detectable change provides a tamper-proof and non-electronic means for detecting an impact. The impact detection composites can be incorporated into a variety of articles and used in a variety of settings, for example to monitor personal safety, to monitor article integrity, etc.

公开(公告)号：US20200347179A1

公开(公告)日：2020-11-05

申请号：US16764255

申请日：2018-11-15

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Fahad Khan ,  Nazim Uddin

IPC: C08G18/78 ,  C09D175/04 ,  C08G18/20 ,  C08G18/24 ,  C08G18/32 ,  C08G18/40 ,  C08G18/48 ,  C08G18/61 ,  C08G18/62 ,  C08G18/65 ,  C08G18/71 ,  C08G18/73 ,  C08G18/75 ,  C08G18/76 ,  C08G18/77 ,  C08G18/79

Abstract: The disclosure relates to a thermoset omniphobic composition, which includes a thermoset polymer with first, second, and third backbone segments, urethane groups linking the first and third backbone segments, and urea groups linking the first and second backbone segments. The first, second, and third backbone segments generally correspond to urethane or urea reaction products of polyisocyanate(s), amine-functional hydrophobic polymer(s), and polyol(s), respectively. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, dirt-repellent, and optically clear. The thermoset omniphobic composition can be applied by different coating methods including cast, spin, roll, spray and dip coating methods.

公开(公告)号：US20180334522A1

公开(公告)日：2018-11-22

申请号：US15983312

申请日：2018-05-18

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz

IPC: C08F283/02 ,  C08G64/34 ,  C08G64/02

CPC classification number: C08F283/02 ,  C08G64/0291 ,  C08G64/34

Abstract: An unsaturated polycarbonate has the structure: wherein X and Y are each an OH group; a transition metal and an OH group; an OH group and a COOH group; or one or both of X and Y is independently —NH2, —SH, C═C, N3, C—C triple bond, C═C, an o-tosylate, or a halogen;m is 0 to 30,000 and n is 1 to 30,000, and (m+n) is 2 or greater;R1 is a C3-C20 group chosen from particular groups;R2 is H or a second similar C3-C20 group, andR3 is optionally a third C3-C20 group having one or more C═C terminal and/or internal double bonds; andR4 is optionally H or a fourth similar C3-C20 group optionally having one or more C═C terminal and/or internal double bonds; orR3 and R4 form a ring structure having one or more C═C double bonds and having 4 to 20 carbon atoms.

公开(公告)号：US20240182665A1

公开(公告)日：2024-06-06

申请号：US18285684

申请日：2022-04-05

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Ajmir Khan ,  Zahra Aayanifard ,  Muhammad Naveed

IPC: C08J11/24 ,  B01J31/02 ,  B01J31/22 ,  C07C29/128 ,  C07C67/475 ,  C08J11/14 ,  C08J11/28

CPC classification number: C08J11/24 ,  B01J31/0237 ,  B01J31/2226 ,  C07C29/1285 ,  C07C67/475 ,  C08J11/14 ,  C08J11/28 ,  B01J2231/005 ,  B01J2531/26 ,  C08J2367/02 ,  C08J2367/04 ,  C08J2377/06

Abstract: The disclosure relates to a method for chemically recycling a condensation polymer, which includes melt-processing a mixture including a condensation polymer and an internal catalyst to increase the amorphous content of the polymer, followed by depolymerizing polymer in a reaction medium with a reactive solvent. Melt-processing and quenching of a condensation polymer generally reduces the crystalline content of the polymer and correspondingly increases the amorphous content of the polymer, which makes the polymer more amenable to subsequent depolymerization. Inclusion of the internal catalyst, for example a volatile organic catalyst, during melt-processing not only improves the relative degree of amorphization during melt-processing, but it also enhances the rate and conversion of the depolymerization stage that would otherwise be rate-limited by mass transport of an external catalyst from the bulk reaction medium to the polymer surface for depolymerization.

公开(公告)号：US11814540B2

公开(公告)日：2023-11-14

申请号：US17054626

申请日：2020-06-02

Applicant: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

Inventor： Muhammad Rabnawaz ,  Syeda Shamila Hamdani

IPC: C09D189/00 ,  C09D103/02 ,  C09D105/08 ,  C09D129/04

CPC classification number: C09D189/00 ,  C09D103/02 ,  C09D105/08 ,  C09D129/04

Abstract: The disclosure relates to omniphobic coatings, related articles including such coatings, and related method for forming such coatings or articles, for example biobased and/or biodegradable omniphobic coatings with high barrier properties. The omniphobic coating includes an oleophobic and hydrophilic first layer, and a hydrophobic and optionally oleophilic second layer adjacent to the first layer. A corresponding omniphobic coated article can include the omniphobic coating on a substrate such as a porous cellulosic or paper substrate, for example to provide a water- and oil/fat/grease-resistant coating for a paper-based product. The first layer of the omniphobic coating is adjacent to the substrate and the second layer is adjacent to the first layer at a position further from the substrate than the first layer. The omniphobic coating can be applied to a substrate in a layer-by-layer process, and the coated article can be recycled by extraction to remove the coating and recover the substrate material, for example in a re-pulping process.