1. A curable composition consisting essentially of
(a) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least one hydrosilyl moiety; and
(b) at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof;
wherein said curable composition is non-foaming and has an average condensation-curable, reactive silane functionality greater than two; and wherein said curable composition contains no hydroxysilyl-containing components other than hydroxyl-functional silicate resins.
2. The composition of claim 1, wherein said component (a) comprises at least one polyorganosiloxane.
3. The composition of claim 2, wherein said polyorganosiloxane comprises cyclic polymethyl(hydro)siloxane, acyclic polymethyl(hydro)siloxane, copolymer comprising methyl(hydro)siloxane units and dimethylsiloxane units, or a combination thereof.
4. The composition of claim 1, wherein said component (a) comprises at least one fluorinated polyorganosiloxane.
5. The composition of claim 4, wherein said fluorinated polyorganosiloxane comprises fluoroalkyl-substituted polyorganosiloxane, fluoroalkylether-substituted polyorganosiloxane, or a combination thereof.
6. The composition of claim 1, wherein said component (a) has an average condensation-curable, reactive silane functionality of at least three.
7. The composition of claim 1, wherein said component (a) has an equivalent weight of less than 1000, based upon said condensation-curable, reactive silane functionality.
8. The composition of claim 1, wherein said component (a) comprises at least one acyclic polysiloxane that is represented by the following general formula:
R\u20322R\u2033SiO(R\u20322SiO)r(HR\u2032SiO)sSiR\u2033R\u20322\u2003\u2003(I)
wherein each R\u2032 is independently selected from alkyl, alkenyl, fluoroalkyl, aryl, fluoroaryl, cycloalkyl, fluorocycloalkyl, heteroalkyl, heterofluoroalkyl, heteroaryl, heterofluoroaryl, heterocycloalkyl, heterofluorocycloalkyl, and combinations thereof; each R\u2033 is independently hydrogen or R\u2032; r is an integer of 0 to 150; and s is an integer of 1 to 150.
9. The composition of claim 1, wherein said component (a) comprises at least one cyclic polysiloxane that is represented by the following general formula:
cyclo-(R\u20322SiO)t(HR\u2032SiO)v\u2003\u2003(II)
wherein each R\u2032 is independently selected from alkyl, alkenyl, fluoroalkyl, aryl, fluoroaryl, cycloalkyl, fluorocycloalkyl, heteroalkyl, heterofluoroalkyl, heteroaryl, heterofluoroaryl, heterocycloalkyl, heterofluorocycloalkyl, and combinations thereof; t is an integer of 0 to 60; and v is an integer of 3 to 10.
10-13. (canceled)
14. The composition of claim 1, wherein said component (b) is selected from
(1) amidine compounds that are represented by the following general formula:
(2) guanidine compounds that are represented by the following general formula:
(3) phosphazene compounds that are represented by the following general formula:
(4) proazaphosphatrane compounds that are represented by the following general formula:
and combinations thereof;
wherein R1, R2, R3, R4, R5, R6, and R7 are each independently selected from hydrogen, monovalent organic groups, monovalent heteroorganic groups, and combinations thereof; and wherein any two or more of R1, R2, R3, R4, R5, R6, and R7 of said amidine, guanidine, andor phosphazene compounds optionally can be bonded together to form a ring structure.
15. (canceled)
16. The composition of claim 1, wherein said component (b) is selected from 1,2-dimethyl-1,4,5,6-tetrahydropyrimidine, 1,8-diazabicyclo5.4.0-7-undecene (DBU), 1,5-diazabicyclo4.3.0-5-nonene (DBN), 1,5,7-triazabicyclo4.4.0dec-5-ene (TBD), 7-methyl-1,5,7-triazabicyclo4.4.0dec-5-ene (MTBD), 2-tert-butyl-1,1,3,3-tetramethylguanidine, 2-tert-butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine, phosphazene base P1-t-Bu-tris(tetramethylene), phosphazene base P4-t-Bu, 2,8,9-triisopropyl-2,5,8,9-tetraaza-1-phosphabicyclo3.3.3undecane, and combinations thereof.
17. The composition of claim 1, wherein said base is selected from amidines, guanidines, and combinations thereof.
18. The composition of claim 17, wherein said base is selected from amidines and combinations thereof.
19. The composition of claim 18, wherein said amidine is selected from 1,8-diazabicyclo5.4.0-7-undecene (DBU), 1,5-diazabicyclo4.3.0-5-nonene (DBN), and combinations thereof.
20. (canceled)
21. The composition of claim 1, wherein said composition is substantially anhydrous.
22. The composition of claim 1, wherein said composition has been cured.
23. A curable composition consisting essentially of
(a) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least three hydrosilyl moieties; and
(b) at least one base selected from 1,8-diazabicyclo5.4.0-7-undecene (DBU), 1,5-diazabicyclo4.3.0-5-nonene (DBN), and combinations thereof.
24. A coating process comprising
(a) providing the curable polysiloxane composition of claim 1
(b) providing at least one substrate having at least one major surface;
(c) applying said curable polysiloxane composition to at least a portion of at least one said major surface of said substrate; and
(d) allowing or inducing said curable polysiloxane composition to cure to form a coating.
25. The process of claim 24, wherein said allowing or inducing is carried out by exposing said curable polysiloxane composition to adventitious moisture.
26. An article comprising at least one substrate having at least one major surface, said substrate bearing, on at least a portion of at least one said major surface, a coating prepared by the coating process of claim 24.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A siding boards attachment structure in which a plurality of external wall members are secured to a structural body of a building with securing members in a rabbet joint manner, comprising:
the securing member being secured to the structural body in a state in which an upper side lower-ledge formed at an upper edge of the external wall member to be disposed at an internal side is engaged with a lower side upper-ledge formed at a lower edge of the external wall member to be disposed at an external side,
a size adjusting external wall member having a cut end portion for adjusting its width among the plurality of external wall members with the cut end portion being secured to the structural body with an end portion securing member,
the end portion securing member being provided with a backboard portion to be secured to the structural body and a forwardly bent portion forwardly bent from one edge of the backboard portion, and
the backboard portion of the end portion securing member being in contact with a rear side surface of the size adjusting external wall member and the forwardly bent portion of the end portion securing member is in contact with the cut end face of the size adjusting external wall member,
wherein the backboard portion and the rear side surface of the size adjusting external wall member are bonded to each other with an adhesive agent.
2. The siding boards attachment structure as recited in claim 1, wherein the cut end portion of the size adjusting external wall member is inclined with respect to a right and left width direction of the size adjusting external wall member, and wherein the end portion securing member is disposed along the cut end portion in an inclined state with respect to the right and left width direction of the size adjusting external wall member.
3. The siding boards attachment structure as recited in claim 2, wherein the size adjusting external wall member is disposed at a flowing side assortment portion connecting with a lower roof of a building, and wherein the cut end portion of the size adjusting external wall member is secured to the structural body with the end portion securing member.
4. The siding boards attachment structure as recited in claim 1, wherein the size adjusting external wall member is disposed at a building side assortment portion connecting with a lower roof of the building, an upper or lower side of an opening portion, or an overhang portion, and wherein the cut end portion of the size adjusting external wall member is secured to the structural body with the end portion securing member.
5. The siding boards attachment structure as recited in claim 1, wherein the securing member and the end portion securing member are secured to a furring strip fixed to the structural body.
6. The siding boards attachment structure as recited in claim 1, wherein the securing member has a base plate portion which comes into contact with the rear side surface of the external wall member, and wherein the backboard portion of the end portion securing member and the base plate portion of the securing member have approximately the same front-to-rear width.
7. The siding boards attachment structure as recited in claim 1, wherein the external wall member is a ceramic series external wall member made of fired material.