Dual curing polymers and methods for their preparation and use

1. A method comprising: combining ingredients comprising:

(A) a polyorganohydrogen siloxane having an average, per molecule, of one silicon-bonded hydrogen atom and one to three terminal hydrolyzable groups, where the silicon-bonded hydrogen atom and the hydrolyzable groups are bonded to different silicon atoms in the polyorganohydrogensiloxane;

(B) a polyorganohydrogen siloxane having an average, per molecule, of one silicon-bonded hydrogen atom and one to three terminal epoxy functional organic groups, where the silicon bonded hydrogen atom and the epoxy functional organic groups are bonded to different silicon atoms in the polyorganohydrogensiloxane; and

(C) an organofunctional polymer having an average, per molecule, of at least 3 terminal aliphatically unsaturated organic groups; and

(D) a hydrosilylation catalyst; thereby making a polymer

where the polymer comprises units of formulae:

where

subscript a has a value of 1 or more,

subscript e has a value of 1 or more,

a quantity (a+e) has a value of 3 or more,

each subscript s independently has a value of 1, 2, or 3;

each subscript t independently has a value of 1, 2, or 3;

each R 1 is independently an oxygen atom or a divalent hydrocarbon group;

each R 2 is independently monovalent hydrocarbon group free of terminal aliphatic unsaturation;

each X is independently a monovalent hydrolyzable group; and

each J is independently a monovalent epoxy functional organic group.

2. The method of claim 1 , where ingredient (A) comprises a unit of formula

at a terminus, a silicon bonded hydrogen atom at another terminus, where the unit

and the hydrogen atom are separated by 1 to 10 additional units selected from the group consisting of R 2 2 SiO 2/2 , R 2 SiO 3/2 , SiO 4/2 , R 2 3 SiO 1/2 , R 1′ , and combinations thereof; where

each R 1 is independently an oxygen atom or a divalent hydrocarbon group,

each R 1′ is independently a divalent hydrocarbon group,

each R 2 is independently a monovalent organic group that is free of terminal aliphatic unsaturation,

each X is independently a monovalent hydrolyzable group,

subscript t has a value of 1, 2, or 3.

3. The method of claim 1 , where ingredient (B) comprises a unit of formula

at a terminus, a silicon bonded hydrogen atom at another terminus, where the unit

and the hydrogen atom are separated by 1 to 10 additional units selected from the group consisting of R 2 2 SiO 2/2 , R 2 SiO 3/2 , SiO 4/2 , R 1′ , and combinations thereof; where

each R 1′ is independently a divalent hydrocarbon group,

each R 2 is independently a monovalent organic group that is free of terminal aliphatic unsaturation,

J is a monovalent epoxy functional organic group, and

subscript s has a value of 1, 2, or 3.

4. The method of claim 1 , where ingredient (A) has formula (XI):

where

subscript t has a value of 1, 2, or 3;

each R 1 is independently a divalent hydrocarbon group;

each R 2 is independently monovalent hydrocarbon group free of terminal aliphatic unsaturation;

each X is independently a monovalent hydrolyzable group; and

subscript x has a value of 1 or more.

5. The method of claim 1 , where ingredient (B) has formula (XII):

where

subscript s has a value of 1, 2, or 3;

each R 2 is independently monovalent hydrocarbon group free of terminal aliphatic unsaturation;

each J is independently a monovalent epoxy functional organic group; and

subscript y has a value of 1 or more.

6. The method of claim 1 , where ingredient (C) has formula (XIII):

where

each R 2 is independently monovalent hydrocarbon group free of terminal aliphatic unsaturation;

each R 3 is independently an organic group having terminal aliphatic unsaturation; and

each subscript h independently has a value ranging from 1 to 25.

7. The method of claim 1 , where ingredient (C) has formula (XIV):

where

subscript i has a value of 1, 2, or 3;

subscript j has a value ranging from 1 to 1,000;

subscript k has a value of 0 or more;

subscript m has a value of 1, 2, or 3;

a quantity (i+k+m) is 3 or more:,

each R 2 is independently monovalent hydrocarbon group free of terminal aliphatic unsaturation; and

each R 3 is independently an organic group having terminal aliphatic unsaturation.