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US 2023/0399522 A1Published application
Self-Cleaning, Dirt Pick-Up Resistant Compositions for Roof Coatings
AssigneeHenry Company, LLC
InventorsThomas Tepe, Zhiyong Zhu
Life of this patent
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Abstract
Silicone compositions and methods of using the compositions are provided. The silicone coatings can exhibit improved dirt pick-up resistance and cleanability. The silicone compositions include a polysiloxane, at least one surfactant, and optionally one or more of a pigment, a filler, a crosslinker, an adhesion promoter, a catalyst, additives or solvents.
Claims22
A composition comprising a polysiloxane;
- at least one surfactant;
- a pigment;
- a filler;
- a crosslinker;
- an adhesion promoter;
- a catalyst;
- and optionally one or more additives and optionally one or more solvents, wherein the polysiloxane has formula:
- wherein:
- R1 at each occurrence is independently selected from alkyl, alkenyl, alkynyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, and heterocyclylalkyl;
- R2 at each occurrence is independently selected from alkyl, aryl, arylalkyl and a bond;
- and n ranges from 10 to 1,000;
- wherein said alkyl, alkenyl, alkynyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, and heterocyclylalkyl are each independently, at each occurrence, unsubstituted or substituted with one or more suitable substituents;
- and
- wherein said surfactant has the HLB range of from about 3 to 20.
11 more elements
A composition, comprising:
- a polydimethylsiloxane resin, wherein the polysiloxane has formula:
- wherein R1 at each occurrence is independently selected from alkyl, alkenyl, alkynyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, and heterocyclylalkyl;
- R2 at each occurrence is independently selected from alkyl, aryl, arylalkyl and a bond;
- and n ranges from 10 to 1,000;
- wherein said alkyl, alkenyl, alkynyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, and heterocyclylalkyl are each independently, at each occurrence, unsubstituted or substituted with one or more suitable substituents;
- 0.2-2% of Surfonic L24-2;
- 11 wt % to 14 wt % titanium dioxide;
- 72 wt % to 78 wt % crystalline silica powder;
- 1 wt % to 3 wt % polydimethylsiloxane treated fumed silica;
- 8 wt % to 10 wt % methyltris(methylethylketoxime)silane;
- 1 wt % to 3 wt % (3-aminopropyl)triethoxysilane;
- and 0.02 wt % to 0.4 wt % tin catalyst;
- based on polydimethylsiloxane resin content.
10 more elements
Dependencies are inferred from the claim text.