公开(公告)号：US20210070922A1

公开(公告)日：2021-03-11

申请号：US16957495

申请日：2018-11-13

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Huifeng Qian ,  Luigi Pellacani ,  Muhammad A. Shafi

IPC: C08G18/76 ,  C08G18/48 ,  C08G18/32 ,  C08G18/10

Abstract: Controllable-cure urethane acrylate resin compositions are disclosed, comprising (A) a urethane acrylate having free hydroxyalkyl (meth) acrylate prepared from a polyurethane prepolymer having a free terminal isocyanate group and a hydroxyalkyl (meth)acrylate, the urethane acrylate having free hydroxyalkyl (meth) acrylate being the reaction product of capping the polyurethane prepolymer in the presence excess of the hydroxyalkyl (meth)acrylate, (B) a polyisocyanate-based thickening agent, and optionally an additional hydroxyalkyl (meth)acrylate, wherein the polyisocyanate-based thickening agent (B) and the urethane acrylate having free hydroxyalkyl (meth) acrylate (A), and optionally the additional hydroxyalkyl (meth)acrylate, are present at NCO/OH molar ratio of from 0.2 to 10.0. Methods for making controllable-cure urethane acrylate resin compositions are disclosed.

公开(公告)号：US11447597B2

公开(公告)日：2022-09-20

申请号：US16463208

申请日：2017-09-07

Applicant: Dow Global Technologies LLC

Inventor： Huifeng Qian ,  Rajat Duggal ,  Muhammad A. Shafi ,  Luigi Pellacani ,  Harshad M. Shah

IPC: C08G18/76 ,  C08G18/24 ,  C08G18/48 ,  C08G18/67 ,  C09D11/102 ,  C09D175/14 ,  C09J175/14 ,  C08G18/12 ,  C09D175/16 ,  C09J175/16 ,  B29C55/00 ,  C08J3/24

Abstract: In various embodiments, a resin composition includes a urethane (meth)acrylate, a reactive diluent, and a urethane (meth)acrylate toughener. The urethane (meth)acrylate toughener includes at least one additional polyol having a number average molecular weight Mn of greater than 1,000 g/mol. Cured articles made from the resin composition have an average fracture toughness (KIc) value from 1 MPa*m1/2 to 3 MPa*m1/2 when measured in accordance with ASTM D5045. Processes for making the resin composition as well as processes using the resin composition are also provided.

公开(公告)号：US11225544B2

公开(公告)日：2022-01-18

申请号：US16082204

申请日：2017-03-01

Applicant: Dow Global Technologies LLC

Inventor： Huifeng Qian ,  Muhammad A. Shafi ,  Luigi Pellacani ,  Harshad M. Shah ,  Dwight D. Latham ,  Qiuyun Xu ,  William L. Heaner, IV ,  Emanuele Maiocchi

IPC: C08G18/12 ,  B29C39/00 ,  B29C39/26 ,  C08G18/32 ,  C08G18/66 ,  C08G18/67 ,  C08G18/76 ,  B29K75/00 ,  B29L31/00

Abstract: A curable resin composition comprising: (1) a urethane (meth)acrylate; (2) a reactive diluent selected from the group consisting of i) a hydroxyl alkyl (meth)acrylate monomer where the acrylate group, which is attached to the carbonyl group, is attached to a hydrogen or a methyl group and the carbonyl group is attached to the hydroxyl group thru an R2 alkylene group containing 2 to 18 carbon atoms per molecule.

公开(公告)号：US20190092896A1

公开(公告)日：2019-03-28

申请号：US16082141

申请日：2017-02-27

Applicant: Dow Global Technologies LLC

Inventor： Huifeng Qian ,  Muhammad A. Shafi ,  Luigi Pellacani

IPC: C08G18/67 ,  C08G18/76 ,  C08G18/32 ,  C08G18/10 ,  C08G18/16

Abstract: A curable resin composition comprising: (1) a urethane (meth)acrylate comprising a) urethane (meth)acrylate oligomers with a number average molecular weight in the range of from 400 to 1500; and b) urethane (meth)acrylate oligomers with a number average molecular weight in the range of from 1500 to 10000, present in a weight ratio of from 0.1:1 to 25:1; (2) a reactive diluent; and (3) a free radical-generating catalyst, is disclosed.

公开(公告)号：US11192974B2

公开(公告)日：2021-12-07

申请号：US16957495

申请日：2018-11-13

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Huifeng Qian ,  Luigi Pellacani ,  Muhammad A. Shafi

IPC: C08G18/76 ,  C08G18/10 ,  C08G18/32 ,  C08G18/48

Abstract: Controllable-cure urethane acrylate resin compositions are disclosed, comprising (A) a urethane acrylate having free hydroxyalkyl (meth) acrylate prepared from a polyurethane prepolymer having a free terminal isocyanate group and a hydroxyalkyl (meth)acrylate, the urethane acrylate having free hydroxyalkyl (meth) acrylate being the reaction product of capping the polyurethane prepolymer in the presence excess of the hydroxyalkyl (meth)acrylate, (B) a polyisocyanate-based thickening agent, and optionally an additional hydroxyalkyl (meth)acrylate, wherein the polyisocyanate-based thickening agent (B) and the urethane acrylate having free hydroxyalkyl (meth) acrylate (A), and optionally the additional hydroxyalkyl (meth)acrylate, are present at NCO/OH molar ratio of from 0.2 to 10.0. Methods for making controllable-cure urethane acrylate resin compositions are disclosed.

公开(公告)号：US11124597B2

公开(公告)日：2021-09-21

申请号：US16082210

申请日：2017-02-23

Applicant: Dow Global Technologies LLC

Inventor： Muhammad A. Shafi ,  Huifeng Qian ,  Luigi Pellacani ,  Dwight D. Latham ,  William L. Heaner, IV ,  Qiuyun Xu ,  Harshad M. Shah

IPC: C08G18/67 ,  C08G18/12 ,  C08G18/16 ,  C08G18/24 ,  C08G18/48 ,  C09D175/16 ,  C08G18/76 ,  C09J175/16 ,  B29C55/00 ,  B29K75/00

Abstract: A process for making a curable resin composition comprising the steps of: (1) reacting a) an isocyanate; and b) a polyol mixture with a bimodal distribution of i) a first polyol mixture comprising polyols having an average equivalent weight of from 50 to 400; and ii) a second polyol mixture comprising polyols having an average equivalent weight of from 1000 to 5000 to form a urethane prepolymer; and (2) adding a capping agent to the urethane prepolymer to form the curable resin composition.