公开(公告)号：US20210186820A1

公开(公告)日：2021-06-24

申请号：US16754186

申请日：2018-11-20

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Saswata Chakraborty ,  Benjamin C. Mac Murray ,  Eric W. Nelson ,  Thomas P. Klun ,  Richard J. Pokorny ,  Wayne S. Mahoney ,  Chad M. Amb ,  George W. Griesgraber ,  Dana R. Reed ,  Ahmed S. Abuelyaman ,  Robert S. Clough ,  James D. Hansen ,  Daniel J. Skamser ,  Ian Dailey ,  John M. Riedesel

IPC: A61K6/62 ,  A61C7/08 ,  A61C7/00 ,  A61K6/893 ,  B29C64/124 ,  B33Y70/00 ,  B33Y80/00 ,  B33Y10/00 ,  C08L75/14

Abstract: An orthodontic article is described comprising the reaction product of a free-radically polymerizable resin; a first free-radical photoinitiator having sufficient absorbance at a first wavelength range; and a second free-radical initiator selected from a second photoinitiator having sufficient absorbance at a second wavelength range, wherein the second wavelength range is different than the first wavelength range, or a thermal free-radical initiator. In some embodiments, a 1 g/liter acetonitrile solution, at a pathlength of 1 cm, has an absorbance of greater than 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, or 0.10 at a wavelength of the first wavelength range when measured with a spectrophotometer. In some embodiments, the first free-radical photoinitiator exhibits a maximum absorbance at a wavelength of the range of 370-380 nm or 320-330 nm and/or comprises photoinitiator groups selected from acyl phosphine oxide or alkyl amine acetophenone. Also described are photopolymerizable compositions and methods.

公开(公告)号：US20210061935A1

公开(公告)日：2021-03-04

申请号：US17054655

申请日：2019-05-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Wayne S. Mahoney ,  Saswata Chakraborty ,  Evan L. Schwartz ,  Claire Hartmann-Thompson ,  Tabitha A. Silliman

IPC: C08F220/38 ,  C09D4/00 ,  C09D133/14 ,  C09D5/00 ,  H01L51/52 ,  H01L51/56

Abstract: Curable compositions include an acrylate of Formula I: Formula I at least one multifunctional (meth)acrylate with fused aromatic groups, heteroarylene groups, heteroalkylene groups, alkylene groups, or aralkylene groups, and a photoinitiator. The compositions, when cured, have a refractive index of 1.63 or greater at 532 nanometers, are optically transparent, and have a thermal stability such that upon heating for 1 hour at 250° C. they have a weight loss of 3.5% or less.

公开(公告)号：US10899961B2

公开(公告)日：2021-01-26

申请号：US15999475

申请日：2017-02-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Paul B. Armstrong ,  Saswata Chakraborty ,  Michael C. Palazzotto

IPC: C09K11/02 ,  C09K11/70 ,  C09K11/08

Abstract: Disclosed are quantum dots and quantum dot articles stabilized by a fluorochemical copolymer having pendent arsine, stibine or phosphine stabilizing groups; and pendent fluorochemical groups.

公开(公告)号：US12121413B2

公开(公告)日：2024-10-22

申请号：US17297186

申请日：2020-01-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Saswata Chakraborty ,  Benjamin C. MacMurray ,  James D. Hansen ,  Karl J. L. Geisler ,  Thomas P. Klun ,  Daniel J. Skamser ,  John M. Riedesel ,  Steven H. Kong ,  Anja Friedrich

IPC: A61C7/08 ,  B29C64/135 ,  B29C64/30 ,  B33Y10/00 ,  C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  B29C64/241 ,  B29C71/02 ,  B29C71/04 ,  B29L31/00 ,  B33Y40/20

CPC classification number: A61C7/08 ,  B29C64/135 ,  B29C64/30 ,  B33Y10/00 ,  B29C64/241 ,  B29C71/02 ,  B29C71/04 ,  B29L2031/753 ,  B33Y40/20

Abstract: The present disclosure provides a method of making an orthodontic article. The method includes (a) providing a photopolymerizable composition; (b) selectively curing the photopolymerizable composition using actinic radiation to form an article in the shape of an orthodontic article including a number of layers of at least one photopolymerized polymer; and (c) moving the article and thereby generating a mass inertial force in the uncured photopolymerizable composition. The article has a first surface, and no more than 75% of the first surface has a slope magnitude greater than 2.5 degrees. Orthodontic articles are also provided, including an orthodontic article that is prepared according to the method. Orthodontic articles having low extractable component content are further provided. The mass inertial force tends to form a coating layer of uncured photopolymerizable composition on the article, and curing the coating layer can form a surface having low slope magnitude. The low slope magnitude may be correlated to a low haze of the surface of the article.

公开(公告)号：US20230159680A1

公开(公告)日：2023-05-25

申请号：US18094019

申请日：2023-01-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tianyu Wu ,  Saswata Chakraborty ,  Benjamin C. MacMurray ,  Richard J. Pokorny ,  Thomas P. Klun ,  Wayne S. Mahoney ,  Chad M. Amb ,  Ahmed Abuelyaman ,  Robert S. Clough ,  John M. Riedesel ,  James D. Hansen ,  Ian Dailey ,  Daniel J. Skamser ,  Eric W. Nelson ,  George W. Griesgraber ,  Dana R. Reed

IPC: C08F220/12 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29C64/135 ,  A61K6/887 ,  A61K6/893

CPC classification number: C08F220/12 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29C64/135 ,  A61K6/887 ,  A61K6/893 ,  A61C7/08

Abstract: Orthodontic articles and polymerizable resin compositions are described. The orthodontic article comprises a cured composition comprising the reaction product of free-radically polymerizable resin comprising 30 to 70 wt. %, inclusive, of at least one urethane component, and 25 to 70 wt. %, inclusive, of reactive diluent(s) comprising at least one monofunctional (meth)acrylate monomer. The polymerizable resin comprises no greater than 35 wt. % of reactive diluent(s) having a high affinity for water. Reactive diluent(s) such as monofunctional (meth)acrylate monomers having a high affinity for water have low log P values. In one embodiment, the polymerizable resin comprises at least one acidic monomer.

公开(公告)号：US11584817B2

公开(公告)日：2023-02-21

申请号：US17048627

申请日：2019-06-26

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tianyu Wu ,  Saswata Chakraborty ,  Benjamin C. MacMurray ,  Richard J. Pokorny ,  Thomas P. Klun ,  Wayne S. Mahoney ,  Chad M. Amb ,  Ahmed S. Abuelyaman ,  Robert S. Clough ,  John M. Riedesel ,  James D. Hansen ,  Ian Dailey ,  Daniel J. Skamser ,  Eric W. Nelson ,  George W. Griesgraber ,  Dana R. Reed

IPC: C08F220/12 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29C64/135 ,  A61K6/887 ,  A61K6/893 ,  A61C7/08 ,  B29K75/00 ,  B29K105/00 ,  B29L31/00

Abstract: Orthodontic articles and polymerizable resin compositions are described. The orthodontic article comprises a cured composition comprising the reaction product of free-radically polymerizable resin comprising 30 to 70 wt. %, inclusive, of at least one urethane component, and 25 to 70 wt. %, inclusive, of reactive diluent(s) comprising at least one monofunctional (meth)acrylate monomer. The polymerizable resin comprises no greater than 35 wt. % of reactive diluent(s) having a high affinity for water. Reactive diluent(s) such as monofunctional (meth)acrylate monomers having a high affinity for water have low log P values. In one embodiment, the polymerizable resin comprises at least one acidic monomer.

公开(公告)号：US20220273409A1

公开(公告)日：2022-09-01

申请号：US17637488

申请日：2020-09-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Rudolf Schmid ,  Ralf Kelz ,  Christian A. Richter ,  Anja Friedrich ,  James D. Hansen ,  Saswata Chakraborty ,  Benjamin C. Mac Murray ,  Daniel D. Oberpertinger

IPC: A61C13/15 ,  B29C64/135 ,  B29C71/04 ,  A61C13/00

Abstract: The apparatus (1000) includes a housing (110), a chamber (120) disposed in the housing, at least two light emitting diodes (LEDs) (130) disposed within the housing (110), and a user interface (140) disposed on an exterior (112) of the housing. The chamber (120) is adaptable to each of an open, closed, and hermetically sealed configuration. The chamber (120) includes a material transparent to actinic radiation and light from the LEDs (130) enters the chamber from more than one direction. The user interface (140) includes a display (142) and program switches (144) configured to adjust at least three operational parameters of the apparatus. The apparatus (1000) further includes a vacuum pump (150) operatively coupled to the chamber (120). The system includes the apparatus (1000) and an article (180). An article includes layers of at least one photopolymerized crosslinked composition and a low extractable component content. A method of post-curing an article includes obtaining an article (180), placing the article in an apparatus (1000),

公开(公告)号：US11345849B2

公开(公告)日：2022-05-31

申请号：US16318952

申请日：2017-07-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carl A. Laskowski ,  Saswata Chakraborty ,  Wayne S. Mahoney ,  Guy D. Joly ,  Michael C. Palazzotto

IPC: B32B5/16 ,  B32B27/08 ,  B32B27/14 ,  C08K3/10 ,  C08K9/02 ,  C08K9/04 ,  C09K11/70 ,  C09K11/02 ,  C08F30/02 ,  C08L83/10 ,  C08L25/16 ,  C08L43/02 ,  C08G77/14 ,  C08G77/442 ,  C08F230/02 ,  C08F297/02 ,  C08F212/14

Abstract: The present disclosure provides a composite particle that includes: a fluorescent semiconductor core/shell nanoparticle (preferably, nanocrystal); and a stabilizing homo-copolymer combined with the core/shell nanoparticle, the stabilizing (co)polymer comprising styrene monomer units and functionalized with phosphine, arsine or stibine groups.

公开(公告)号：US20210361389A1

公开(公告)日：2021-11-25

申请号：US17052536

申请日：2019-06-25

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Benjamin C. Mac Murray ,  Saswata Chakraborty ,  John M. Riedesel ,  Thomas P. Klun ,  Chad M. Amb ,  Karl J.L. Geisler ,  Zeba Parkar ,  Adrian S. Eckert ,  Mark T. Gibson ,  Tianyu Wu

IPC: A61C7/08 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y80/00 ,  B29C64/124 ,  B29C64/35 ,  B29C71/00

Abstract: The present disclosure provides methods of making a hydrated orthodontic article is provided. One method includes a) providing a photopolymerizable composition; b) selectively curing the photopolymerizable composition using actinic radiation to form an article in the shape of an orthodontic article having a plurality of layers of at least one photopolymerized polymer; and c) exposing the article to water by submersion in water, thereby hydrating the article. A sheet of the at least one photopolymerized polymer has a bending modulus when hydrated of 100 MPa or greater and 2200 MPa or less. Another method includes exposing the orthodontic article to water vapor and hermetically sealing the hydrated orthodontic article in a container. Hydrated orthodontic articles are also provided, including an orthodontic article that is prepared according to one of the methods. The present disclosure further provides kits, including an orthodontic article and instructions for exposing the orthodontic article to water to hydrate the orthodontic article, as well as including a hydrated orthodontic article hermetically sealed in a container.

公开(公告)号：US20210301042A1

公开(公告)日：2021-09-30

申请号：US17344096

申请日：2021-06-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Thomas P. Klun ,  Zeba Parkar ,  John M. Riedesel ,  Richard J. Pokorny ,  Chad M. Amb ,  Benjamin R. Coonce ,  Robert S. Clough ,  Tianyu Wu ,  Saswata Chakraborty ,  Yongshang Lu ,  Benjamin C. Mac Murray

IPC: C08F2/50 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29C64/129 ,  C08F2/44 ,  C08F220/18 ,  C08F290/06 ,  C08G18/44 ,  C08G18/67 ,  C08K5/00 ,  C08K5/3437

Abstract: The present disclosure provides a photopolymerizable composition. The photopolymerizable composition includes a) 40-60 parts by weight of a monofunctional (meth)acrylate monomer, per 100 parts of the total photopolymerizable composition; b) a photoinitiator; and c) a polymerization reaction product of components. A cured homopolymer of the monofunctional (meth)acrylate monomer has a glass transition temperature of 125 degrees Celsius or greater. The polymerization reaction product of components includes i) a diisocyanate; ii) a hydroxy functional methacrylate; iii) a polycarbonate diol; and iv) a catalyst. The polymerization reaction product includes a polyurethane methacrylate polymer. Often, the polycarbonate diol has a number average molecular weight of greater than 1,000 grams per mole (g/mol) or a weighted average of all polycarbonate diols present in the components has a Mn of greater than 1,000 g/mol; alternatively, the polyurethane methacrylate polymer has a weight average molecular weight of 8,000 g/mol or greater. An article is also provided including the photopolymerizable composition reaction product. Further, the present disclosure provides articles and methods of making articles. Methods are additionally provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process, the article based on the digital object. A system is also provided, including a display that displays a 3D model of an article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article.