公开(公告)号：WO2021247210A1

公开(公告)日：2021-12-09

申请号：PCT/US2021/031889

申请日：2021-05-12

Applicant: DOW SILICONES CORPORATION

Inventor： WEI, Yanhu ,  NIU, Zhenbin ,  FU, Peng-Fei

IPC: C08G77/14 ,  C08G77/38 ,  C08K3/20 ,  C08K3/22 ,  C08L83/06 ,  C08K5/17 ,  C08K5/50 ,  C08K5/55 ,  C09D183/06 ,  C09J5/06 ,  C09J183/06 ,  C09J2481/005 ,  C09J7/401

Abstract: An epoxy-curable silicone release coating composition and methods for its preparation and use are provided. The composition contains an inhibited Lewis acid catalyst. Releasing the Lewis acid catalyst from the inhibitor allows the Lewis acid to catalyze cure of the epoxy-groups. The composition can be coated on various substrates and cured to form a release liner.

公开(公告)号：WO2021113318A1

公开(公告)日：2021-06-10

申请号：PCT/US2020/062828

申请日：2020-12-02

Applicant: DOW SILICONES CORPORATION

Inventor： CHEVALIER, Pierre ,  NIU, Zhenbin ,  NG, Sze-Sze ,  DEHLIN, Lori ,  DUJARDIN, Deana ,  KNOTT, Alex ,  RICH, David ,  BEKEMEIER, Thomas ,  MITCHELL, Timothy P. ,  AHN, Dongchan

IPC: C08G77/06 ,  C08G77/08 ,  C08G77/12 ,  C08G77/20 ,  C08G77/00 ,  C08L83/04 ,  C09D183/04 ,  C09J7/40 ,  C09J183/04

Abstract: A composition for forming a release coating is disclosed. The composition comprises (A) an organopolysiloxane comprising the reaction product of: (i) a silicone resin having a particular formula; (ii) a cyclic siloxane; and (iii) (iii) at least one of (A)(iii)(a) a branched organopolysiloxane having a particular formula or (A)(iii)(b) a terminating agent; in the presence of a polymerization catalyst. The composition further comprises (B) an organopolysiloxane including an average of at least two silicon-bonded ethylenically unsaturated groups per molecule.

公开(公告)号：WO2020131367A1

公开(公告)日：2020-06-25

申请号：PCT/US2019/064348

申请日：2019-12-04

Applicant: DOW SILICONES CORPORATION

Inventor： JOFFRE, Eric ,  LIU, Nanguo ,  LU, Gang ,  NIU, Zhenbin ,  RICH, David

IPC: C08G77/12 ,  C08L83/04 ,  C09D183/04

Abstract: A polyfunctional organohydrogensiloxane and method for its preparation using a boron containing Lewis acid as catalyst is disclosed. A clustered functional organosiloxane may be prepared by a method comprising functionalizing the polyfunctional organohydrogensiloxane. The polyfunctional organohydrogensiloxane and the clustered functional organosiloxane are useful in curable compositions. The polyfunctional organohydrogensiloxane may be used in a release coating composition. The clustered functional organosiloxane may be used in an adhesive composition.

公开(公告)号：WO2020247333A1

公开(公告)日：2020-12-10

申请号：PCT/US2020/035640

申请日：2020-06-02

Applicant: DOW SILICONES CORPORATION

Inventor： WEI, Yanhu ,  SWIER, Steven ,  NIU, Zhenbin ,  LIU, Nanguo

IPC: C07F5/02 ,  C08L83/04

Abstract: A composition contains a mixture of silyl hydride, an alpha-beta unsaturated ester, a Lewis acid catalyst and an amine having the following formula: R 1 R 2 R 3 N; where the nitrogen is not a member of an N=C-N linkage and where each of R 1 , R 2 , and R 3 is independently selected from a group consisting of hydrogen, alkyl, substituted alkyl, and conjugated moieties; and wherein at least one of R 1 , R 2 and R 3 is a conjugated moiety connected to the nitrogen by a conjugated carbon.

公开(公告)号：WO2020247329A1

公开(公告)日：2020-12-10

申请号：PCT/US2020/035636

申请日：2020-06-02

Applicant: DOW SILICONES CORPORATION

Inventor： WEI, Yanhu ,  SWIER, Steven ,  NIU, Zhenbin ,  LIU, Nanguo

IPC: C08L83/04

Abstract: A composition contains a mixture of silyl hydride, a siloxane, a Lewis acid catalyst and an amine having the following formula: R 1 R 2 R 3 N; where the nitrogen is not a member of an N=C-N linkage and where each of R 1 , R 2 , and R 3 is independently selected from a group consisting of hydrogen, alkyl, substituted alkyl, and conjugated moieties; and wherein at least one of R 1 , R 2 and R 3 is a conjugated moiety connected to the nitrogen by a conjugated carbon.

公开(公告)号：WO2020131369A1

公开(公告)日：2020-06-25

申请号：PCT/US2019/064350

申请日：2019-12-04

Applicant: DOW SILICONES CORPORATION

Inventor： JOFFRE, Eric ,  LIU, Nanguo ,  LU, Gang ,  NIU, Zhenbin ,  RICH, David

IPC: C08G77/12 ,  C08G77/16 ,  C08G77/38 ,  C08K5/1515 ,  C08L83/04 ,  C09D183/04 ,  C09D183/10 ,  C09J183/10 ,  C08G77/04

Abstract: A polyfunctional organohydrogensiloxane is prepared using a boron containing Lewis acid as catalyst. The polyfunctional organohydrogensiloxane may be formulated into release coating compositions. Alternatively, the polyfunctional organohydrogensiloxane may be further functionalized with a curable group to form a clustered functional organosiloxane. The clustered functional organosiloxane may be formulated into thermal radical cure adhesive compositions.

公开(公告)号：WO2021113317A1

公开(公告)日：2021-06-10

申请号：PCT/US2020/062827

申请日：2020-12-02

Applicant: DOW SILICONES CORPORATION

Inventor： NIU, Zhenbin ,  LIU, Nanguo ,  SUNDERLAND, Travis ,  RICH, David ,  CHEVALIER, Pierre ,  NG, Sze-Sze ,  KNOTT, Alex

IPC: C08G77/12 ,  C08L83/04 ,  C09D183/04

Abstract: A method of preparing a composition for forming a release coating is disclosed. The method comprises preparing a reaction product comprising a polyorganohydrogensiloxane compound having cyclic SiH-functional branching groups interconnected by linear polydiorganosiloxane segments (the "branched cyclic polyorganohydrogensiloxane compound"), by combining together (A) a hydroxyl terminated polydiorganosiloxane and (B) a cyclic polyorganohydrogensiloxane, in the presence of (C) a boron containing Lewis acid and a solvent. A release coating composition including the reaction product comprising the branched cyclic polyorganohydrogensiloxane is also disclosed. The reaction product may be combined with or prepared in the presence of a polyorganohydrogensiloxane diluent and stripped of solvent to prepare the composition as a blend of the branched cyclic polyorganohydrogensiloxane and the polyorganohydrogensiloxane diluent for use in solventless-curable compositions.

公开(公告)号：WO2020247332A1

公开(公告)日：2020-12-10

申请号：PCT/US2020/035639

申请日：2020-06-02

Applicant: DOW SILICONES CORPORATION

Inventor： WEI, Yanhu ,  SWIER, Steven ,  NIU, Zhenbin ,  LIU, Nanguo

IPC: C07F5/02 ,  C08L83/04

Abstract: A composition contains a mixture of silyl hydride, a silanols and/or silyl ether, a Lewis acid catalyst and an amine having the following formula: R 1 R 2 R 3 N; where the nitrogen is not a member of an N=C-N linkage and each of R 1 , R 2 , and R 3 is independently selected from a group consisting of hydrogen, alkyl, substituted alkyl, and conjugated moieties; and wherein at least one of R 1 , R 2 and R 3 is a conjugated moiety connected to the nitrogen by a conjugated carbon.

公开(公告)号：WO2020131366A1

公开(公告)日：2020-06-25

申请号：PCT/US2019/064347

申请日：2019-12-04

Applicant: DOW SILICONES CORPORATION

Inventor： LU, Gang ,  LIU, Nanguo ,  NIU, Zhenbin ,  RICH, David ,  TELGENHOFF, Michael ,  WANG, Michael

IPC: C08G77/08 ,  C08G77/12 ,  C08G77/50 ,  C08L83/14 ,  C09D183/14 ,  C09J183/14

Abstract: Polyorganosiloxanes and methods for their preparation are disclosed. The polyorganosiloxanes are useful in curable compositions. The polyorganosiloxanes may have up to 9 silicon bonded hydrogen atoms, or other curable groups, per molecule.

公开(公告)号：WO2018170370A1

公开(公告)日：2018-09-20

申请号：PCT/US2018/022818

申请日：2018-03-16

Applicant: DOW SILICONES CORPORATION

Inventor： DASH, Aswini K. ,  NIU, Zhenbin ,  RICH, David A.

IPC: C08G77/12 ,  C08G77/20 ,  C09J183/04 ,  C08L83/04

Abstract: A curable polysiloxane release coating composition comprises (A) an organopolysiloxane containing ethylenically unsaturated groups. Component (A) is selected from: (A1) a branched organopolysiloxane containing at least three (3) organopolysiloxane branch chains linked through a central core including at least two (2) organopolysiloxane branch chains each of which contain an ethylenically unsaturated group; and/or (A2) a linear organopolysiloxane containing at least 2 ethylenically unsaturated groups having at least six (6) carbon atoms. The composition further comprises (B) an organopolysiloxane containing at least 2 Si-H groups, and (C) a hydrosilylation catalyst. The composition yet further comprises (D) a hydrosilylation inhibitor comprising a maleimide of the general formula (I). In formula (I), A 3 represents a hydrogen atom or a hydrocarbyl or substituted hydrocarbyl group having 1 to 18 carbon atoms, and A 1 and A 2 each represent a hydrogen atom or a hydrocarbyl or substituted hydrocarbyl group having 1 to 18 carbon atoms.