Zinc Containing Catalysts, Methods For Preparing The Catalysts, And Compositions Containing The Catalysts
A composition is capable of curing via condensation reaction. The composition uses a new condensation reaction catalyst. The new condensation reaction catalyst is used to replace conventional tin catalysts. The composition can react to form a gum, gel, rubber, or resin.
1 . A composition comprising:
(A) a catalytically effective amount of a reaction product, where the reaction product is prepared by a method comprising:
reacting ingredients comprising
i) a zinc precursor of general formula Zn-A a , where each A is independently a displaceable substituent, and subscript a is 1 to maximum valence of Zn; and
ii) a ligand comprising two or more amino-functional moieties of general formula (ii):
where subscript x is 1 or 2, and A 1 and A 2 are each independently selected from monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups;
(B1) a hydroxy functional compound having an average, per molecule, of one or more hydroxy moieties, and
(B2) a Si—R 50 functional compound having an average, per molecule, of one or more R 50 moieties, where R 50 is a hydrogen atom or a hydrocarbonoxy group;
where
ingredient (A) is capable of catalyzing a condensation reaction of the hydroxy moiety on ingredient (B1) and the R 50 moiety on ingredient (B2).
2 . The composition of claim 1 , where A in the zinc precursor is selected from a silyl amide group, an alkyl group, and a carboxylic ester group.
3 . The composition of claim 1 , where the ligand is a triamino-functional compound of formula (iii):
where A 3 is selected from a hydrogen atom and an alkyl group of 1 to 6 carbon atoms.
4 . The composition of claim 3 , where the ligand is selected from N,N,N′,N″,N″-pentamethyldiethylenetriamine or N,N,N′,N′-tetraethyldiethylenetriamine.
5 . The composition of claim 1 , where the ligand has general formula (iv):
where group A 4 is a carbocyclic group having at least 3 carbon atoms covalently bonded in a ring, subscript y is at least 1, subscript z is at least 2, and a quantity (y+z) represents valence of A 4 , where the carbocyclic group has a moiety of formula A 5 and the moieties of general formula (ii)
covalently bonded to carbon atoms in the ring; and each A 5 is independently a hydrogen atom or a hydroxy group.
6 . The composition of claim 5 , where the ligand is 2,4,6-tris(dimethylaminomethyl)phenol.
7 . The composition of claim 1 further comprising heating the zinc precursor and the ligand.
8 . (canceled)
9 . The composition of claim 1 , further comprising at least one additional ingredient distinct from ingredients (A), (B1), and (B2), where the at least one additional ingredient is selected from the group consisting of: (C) a crosslinker; (D) a drying agent; (E) an extender, a plasticizer, or a combination thereof; (F) a filler; (G) a treating agent; (H) a biocide; (J) a flame retardant; (K) a surface modifier; (L) a chain lengthener; (M) an endblocker; (N) a nonreactive binder; (O) an anti-aging additive; (P) a water release agent; (Q) a pigment; (R) a rheological additive; (S) a vehicle; (T) a tackifying agent; (U) a corrosion inhibitor; and a combination thereof.
10 .- 11 . (canceled)
12 . A paper coating composition comprising:
(A) a catalytically effective amount of a reaction product a reaction product, where the reaction product is prepared by a method comprising:
reacting ingredients comprising
i) a zinc precursor of general formula Zn-A a , where each A is independently a displaceable substituent, and subscript a is 1 to maximum valence of Zn; and
ii) a ligand comprising two or more amino-functional moieties of general formula (ii):
where subscript x is 1 or 2, and A 1 and A 2 are each independently selected from monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups;
(B1) a disilanol-functional gum, and
(B2) a polydiorganosiloxane of unit formula (I) (R 50 d R 2 (3-d) SiR 3 1/2 ) 2 (R 2 2 SiO 2/2 ) e (R 50 R 2 SiO 2/2 ) f , where each R 50 is a hydrogen atom, each R 2 is independently a monovalent organic group, each R 3 is independently an oxygen atom or a divalent hydrocarbon group, each subscript d is independently 0, 1, 2, or 3, e is ≧0, f≧0, and a quantity (e+f) is an integer having a value sufficient to provide the polydiorganosiloxane with a viscosity of at least 100 mPa·s at 25° C.; wherein the paper coating composition is free of alcohol.
13 . A composition comprising:
(A) a catalytically effective amount of a reaction product, where the reaction product is prepared by a method comprising:
reacting ingredients comprising
i) a zinc precursor of general formula Zn-A a , where each A is independently a displaceable substituent, and subscript a is 1 to maximum valence of Zn; and
ii) a ligand comprising one or more amino-functional moieties of general formula (ii):
where subscript x is 1 or 2, and A 1 and A 2 are each independently selected from monovalent hydrocarbon groups and monovalent halogenated hydrocarbon groups;
(B1) a hydroxy functional compound having an average, per molecule, of one or more hydroxy moieties, and
(B2) a Si—R 50 functional compound having an average, per molecule, of one or more R 50 moieties, where R 50 is a hydrogen atom or a hydrocarbonoxy group;
where
ingredient (A) is capable of catalyzing a condensation reaction of the hydroxy moiety on ingredient (B1) and the R 50 moiety on ingredient (B2).
14 . The composition of claim 13 , where A in the zinc precursor is selected from a silyl amide group, an alkyl group, and a carboxylic ester group.
15 . The composition of claim 13 , where the ligand is a compound of general formula (v):
where A 6 is a monovalent heteroatom containing group selected from a monovalent halogenated hydrocarbon group; an amino group of formula:
where A 7 is hydrogen or A 1 , A 8 is hydrogen or A 2 , and subscript aa is 0 to 2; a hydroxyl functional group of formula
where subscript bb is 0 to 2; and an amino and hydroxyl functional group of formula
where subscript cc is 1 or 2, subscript dd is 1 or 2, and A 9 is hydrogen or alkyl.
16 . The composition of claim 15 , where the ligand is selected from
17 . The composition of claim 13 , further comprising heating the zinc precursor and the ligand.
18 . (canceled)
19 . The composition of claim 13 , further comprising at least one additional ingredient distinct from ingredients (A), (B1), and (B2), where the at least one additional ingredient is selected from the group consisting of: (C) a crosslinker; (D) a drying agent; (E) an extender, a plasticizer, or a combination thereof; (F) a filler; (G) a treating agent; (H) a biocide; (J) a flame retardant; (K) a surface modifier; (L) a chain lengthener; (M) an endblocker; (N) a nonreactive binder; (O) an anti-aging additive; (P) a water release agent; (Q) a pigment; (R) a rheological additive; (S) a vehicle; (T) a tackifying agent; (U) a corrosion inhibitor; and a combination thereof.
20 .- 21 . (canceled)
22 . A composition comprising:
(A) a catalytically effective amount of a reaction product, where the reaction product is prepared by a method comprising:
reacting ingredients comprising
i) a zinc precursor of general formula Zn-A a , where each A is independently a displaceable substituent, and subscript a is 1 to maximum valence of Zn; and
ii) a ligand of general formula (vi):
where A 10 , A 11 , A 12 , A 13 , A 14 , A 15 , and A 16 are each independently selected from hydrogen and an alkyl group, such as methyl, ethyl, propyl or butyl;
(B1) a hydroxy functional compound having an average, per molecule, of one or more hydroxy moieties, and
(B2) a Si—R 50 functional compound having an average, per molecule, of one or more R 50 moieties, where R 50 is a hydrogen atom or a hydrocarbonoxy group;
where
ingredient (A) is capable of catalyzing a condensation reaction of the hydroxy moiety on ingredient (B1) and the R 50 moiety on ingredient (B2).
23 . The composition of claim 22 , where A in the zinc precursor is selected from a silyl amide group, an alkyl group, and a carboxylic ester group.
24 . The composition of claim 22 , where the ligand is
25 . The composition of claim 22 , further comprising heating the zinc precursor and the ligand.
26 . (canceled)
27 . The composition of claim 22 , further comprising at least one additional ingredient distinct from ingredients (A), (B1), and (B2), where the at least one additional ingredient is selected from the group consisting of: (C) a crosslinker; (D) a drying agent; (E) an extender, a plasticizer, or a combination thereof; (F) a filler; (G) a treating agent; (H) a biocide; (J) a flame retardant; (K) a surface modifier; (L) a chain lengthener; (M) an endblocker; (N) a nonreactive binder; (O) an anti-aging additive; (P) a water release agent; (Q) a pigment; (R) a rheological additive; (S) a vehicle; (T) a tackifying agent; (U) a corrosion inhibitor; and a combination thereof.
28 .- 29 . (canceled)