公开(公告)号：US11939418B2

公开(公告)日：2024-03-26

申请号：US17551298

申请日：2021-12-15

Applicant: STRATASYS, INC.

Inventor： Liang Chen ,  Alan D. Bushmire ,  Vahid Karimkhani

IPC: C08G18/10 ,  B33Y70/00 ,  C08G18/32 ,  C08J3/24 ,  C08J3/28

CPC classification number: C08G18/10 ,  B33Y70/00 ,  C08G18/3221 ,  C08J3/24 ,  C08J3/28 ,  C08J2375/06

Abstract: A photo-curable composition can include a photo-curable resin and a photoinitiator. The photo-curable composition can typically have a shear viscosity of less than 1 Pa·s at 100° C. at a shear rate of 50 s−1 and can typically include a first prepolymer, a second prepolymer, and a reactive diluent.

公开(公告)号：US12195625B2

公开(公告)日：2025-01-14

申请号：US18485238

申请日：2023-10-11

Applicant: Stratasys, Inc.

Inventor： Liang Chen ,  Chen Xu ,  Leslie J. Vescio ,  Bruce D. Lawrey

IPC: C08L75/08 ,  B29B9/12 ,  B29B13/10 ,  B33Y70/00 ,  C08G18/32 ,  C08G18/73 ,  C08L75/04 ,  C08L75/06

Abstract: The present disclosure is directed to pulverulent thermoplastic polymer blends comminuted to a particle size of less than 300 μm. The pulverulent thermoplastic polymer blends can include a first thermoplastic polyurethane and a second thermoplastic polyurethane at a weight ratio of from about 90:10 to about 30:70 first thermoplastic polyurethane to second thermoplastic polyurethane. The first thermoplastic polyurethane can include a reaction product of a first reaction mixture consisting of or consisting essentially of an aliphatic diisocyanate having a number average molecular weight of from 140 g/mol to 170 g/mol and an aliphatic diol having a number average molecular weight of from 62 g/mol to 120 g/mol. The second thermoplastic polyurethane can include a reaction product of a second reaction mixture comprising a polyisocyanate, an isocyanate-reactive component having a number average molecular weight of from 500 g/mol to 10,000 g/mol, and a chain extender having a number average molecular weight of from 60 g/mol to 450 g/mol.

公开(公告)号：US20240034879A1

公开(公告)日：2024-02-01

申请号：US18485238

申请日：2023-10-11

Applicant: Stratasys, Inc.

Inventor： Liang Chen ,  Chen Xu ,  Leslie J. Vescio ,  Bruce D. Lawrey

IPC: C08L75/08 ,  C08L75/06

CPC classification number: C08L75/08 ,  C08L75/06

Abstract: The present disclosure is directed to pulverulent thermoplastic polymer blends comminuted to a particle size of less than 300 μm. The pulverulent thermoplastic polymer blends can include a first thermoplastic polyurethane and a second thermoplastic polyurethane at a weight ratio of from about 90:10 to about 30:70 first thermoplastic polyurethane to second thermoplastic polyurethane. The first thermoplastic polyurethane can include a reaction product of a first reaction mixture consisting of or consisting essentially of an aliphatic diisocyanate having a number average molecular weight of from 140 g/mol to 170 g/mol and an aliphatic diol having a number average molecular weight of from 62 g/mol to 120 g/mol. The second thermoplastic polyurethane can include a reaction product of a second reaction mixture comprising a polyisocyanate, an isocyanate-reactive component having a number average molecular weight of from 500 g/mol to 10,000 g/mol, and a chain extender having a number average molecular weight of from 60 g/mol to 450 g/mol.

公开(公告)号：US11820890B2

公开(公告)日：2023-11-21

申请号：US17220031

申请日：2021-04-01

Applicant: STRATASYS INC.

Inventor： Liang Chen ,  Chen Xu ,  Leslie J. Vescio ,  Bruce D. Lawrey

IPC: C08L75/04 ,  C08L75/06 ,  C08L75/08

CPC classification number: C08L75/08 ,  C08L75/06 ,  C08L75/04 ,  C08L75/06 ,  C08L75/04 ,  C08L75/08

Abstract: The present disclosure is directed to pulverulent thermoplastic polymer blends comminuted to a particle size of less than 300 μm. The pulverulent thermoplastic polymer blends can include a first thermoplastic polyurethane and a second thermoplastic polyurethane at a weight ratio of from about 90:10 to about 30:70 first thermoplastic polyurethane to second thermoplastic polyurethane. The first thermoplastic polyurethane can include a reaction product of a first reaction mixture consisting of or consisting essentially of an aliphatic diisocyanate having a number average molecular weight of from 140 g/mol to 170 g/mol and an aliphatic diol having a number average molecular weight of from 62 g/mol to 120 g/mol. The second thermoplastic polyurethane can include a reaction product of a second reaction mixture comprising a polyisocyanate, an isocyanate-reactive component having a number average molecular weight of from 500 g/mol to 10,000 g/mol, and a chain extender having a number average molecular weight of from 60 g/mol to 450 g/mol.

公开(公告)号：US11891469B2

公开(公告)日：2024-02-06

申请号：US17359939

申请日：2021-06-28

Applicant: STRATASYS, INC.

Inventor： Liang Chen

IPC: C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  C08F283/00 ,  B33Y70/00 ,  B33Y10/00 ,  B29C64/124 ,  B29K75/00

CPC classification number: C08F283/006 ,  B33Y70/00 ,  B29C64/124 ,  B29K2075/00 ,  B33Y10/00

Abstract: Provided is a photopolymerizable composition comprising a blend of: a) from 40 wt. % to 70 wt. % of at least one urethane component; b) from 25 wt. % to 70 wt % of at least one monofunctional reactive diluent; c) from 0.1 wt. % to 5 wt. % of at least one initiator; and d) from 2 wt. % to 10 wt % of an amine-functional (meth)acrylate monomer. Also provided is a process of producing a photopolymerizable composition by blending these ingredients. Further provided is a process of producing a three-dimensional object, by depositing the photopolymerizable composition atop a carrier; depositing additional photopolymerizable composition atop a previously applied layer wherein the depositing of the photopolymerizable composition comprises introducing energy.