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US 2022/0033589 A1Published application
Polyfunctional organosiloxanes, compositions containing same, and methods for the preparation thereof
AssigneeDow Silicones Corporation
InventorsGang Lu, Nanguo Liu, Zhenbin Niu, David Rich, Michael Telgenhoff, Michael Wang
Life of this patent
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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.
Claims31
A method for preparing a product comprising:
- 1) combining
- A) a boron containing Lewis acid,
- B) an alkoxysilyl terminated polydiorganosiloxane of formula:
- where each subscript x is independently 1, 2, or 3;
- each subscript x′ is independently 1, 2, or 3;
- a quantity (x+x′)=2 to 6;
- each subscript w is independently 1 to 10;
- each subscript n is 1 to 2,000;
- each R is an independently selected monovalent hydrocarbon group;
- each R1 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups;
- each R2 is an independently selected alkyl group of 1 to 6 carbon atoms;
- each R3 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups;
- each RD is a divalent hydrocarbon group;
- each RD1 is independently selected from the group consisting of an oxygen atom and a divalent hydrocarbon group;
- and
- C) a branched organohydrogensiloxane of formula:
- where each subscript d is independently 0 to 995 and each R24 is an independently selected monovalent hydrocarbon group;
- thereby preparing the product, where the product comprises a polyfunctional organohydrogensiloxane and a by-product comprising HR2.
15 more elements
-27. (canceled)
A polyfunctional organohydrogensiloxane of formula:
- where each subscript x is independently 1, 2, or 3,
- each subscript x′ is independently 1, 2, or 3,
- a quantity (x+x′)=2 to 6,
- each subscript w is independently 1 to 10,
- each subscript n is 1 to 2,000,
- subscript n′ is 1 to 101,
- each R is an independently selected monovalent hydrocarbon group,
- each R1 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each R2 is an independently selected alkyl group of 1 to 6 carbon atoms,
- each R3 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each RD is a divalent hydrocarbon group,
- each RD1 is independently selected from the group consisting of an oxygen atom and a divalent hydrocarbon group, and
- each RE″ has formula:
- where
- each R24 is an independently selected monovalent hydrocarbon group, subscript o′=0 to 3, and
- each subscript d is independently 0 to 995.
13 more elements
A clustered functional organosiloxane of formula:
- where each RF″ is a group of formula
- where
- each subscript x is independently 1, 2, or 3,
- each subscript x′ is independently 1, 2, or 3,
- a quantity (x+x′)=2 to 6,
- each subscript w is independently 1 to 10,
- each subscript n is 1 to 2,000,
- subscript n′ is 1 to 101,
- each subscript d is independently 0 to 995,
- each subscript o′ is independently 0 to 3,
- each R is an independently selected monovalent hydrocarbon group,
- each R1 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each R2 is an independently selected alkyl group of 1 to 6 carbon atoms,
- each R3 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each RD is a divalent hydrocarbon group,
- each RD1 is independently selected from the group consisting of an oxygen atom and a divalent hydrocarbon group,
- each R24 is an independently selected monovalent hydrocarbon group, and
- each R8 is independently selected from the group consisting of H and a curable group, with the proviso that at least one R8, per molecule, is a curable group.
15 more elements
(canceled)
(canceled)
(canceled)
A release coating composition comprising:
- (i) polyfunctional organohydrogensiloxane of formula:
- where each RE″ has formula:
- where
- each subscript x is independently 1, 2, or 3,
- each subscript x′ is independently 1, 2, or 3,
- a quantity (x+x′)=2 to 6,
- each subscript w is independently 1 to 10,
- each subscript n is 1 to 2,000,
- subscript n′ is 1 to 101,
- each R is an independently selected monovalent hydrocarbon group,
- each R1 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each R2 is an independently selected alkyl group of 1 to 6 carbon atoms,
- each R3 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each RD is a divalent hydrocarbon group,
- each RD1 is independently selected from the group consisting of an oxygen atom and a divalent hydrocarbon group, and
- each R24 is an independently selected monovalent hydrocarbon group, subscript o′=0 to 3, and
- each subscript d is independently 0 to 995;
- (ii) a polyorganosiloxane having an average, per molecule, of at least two silicon bonded aliphatically unsaturated groups capable of undergoing hydrosilylation reaction,
- (iii) a hydrosilylation reaction catalyst, and
- (iv) a hydrosilylation reaction inhibitor, and
- optionally, one or more additional starting materials, where the additional starting materials are selected from the group consisting of (v) an anchorage additive, (vi) an anti-mist additive, (vii) a release modifier, (viii) a substantially linear or linear polyorganohydrogensiloxane, and (ix) a solvent, and two or more of (v), (vi), (vii), (viii), and (ix).
18 more elements
An adhesive composition comprising:
- A) clustered functional organosiloxane of formula
- where each RF″ is a group of formula
- where
- each subscript x is independently 1, 2, or 3,
- each subscript x′ is independently 1, 2, or 3,
- a quantity (x+x′)=2 to 6,
- each subscript w is independently 1 to 10,
- each subscript n is 1 to 2,000,
- subscript n′ is 1 to 101,
- each subscript d is independently 0 to 995,
- each subscript o′ is independently 0 to 3,
- each R is an independently selected monovalent hydrocarbon group,
- each R1 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each R2 is an independently selected alkyl group of 1 to 6 carbon atoms,
- each R3 is independently selected from the group consisting of monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups,
- each RD is a divalent hydrocarbon group,
- each RD1 is independently selected from the group consisting of an oxygen atom and a divalent hydrocarbon group,
- each R24 is an independently selected monovalent hydrocarbon group, and
- each R8 is independently selected from the group consisting of H and a curable group, with the proviso that at least one R8, per molecule, is a curable group;
- B) a reactive resin and polymer;
- C) a condensation reaction catalyst;
- and
- D) a free radical initiator;
- and
- optionally, an additional starting material, where the additional starting material is selected from the group consisting of E) a dual cure compound, F) an adhesion promoter, G) a corrosion inhibitor, H) a rheology modifier, I) a drying agent, J) a crosslinker, K) a filler, L) a spacer, M) an acid scavenger, N) a silanol functional polydiorganosiloxane, O) a fluorescent optical brightener, P) a chain transfer agent, Q) a (meth)acrylate monomer, R) a poly-alkoxy terminated polydiorganosiloxane, S) a colorant, and two or more of E), F), G), H), I), J), K), L), M), N), O), P), Q), R), and S).
22 more elements
Dependencies are inferred from the claim text.