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US 9,803,055 B2Granted
Method for producing fluorinated polysiloxane
AssigneeHempel A/S
InventorsDouglas E. Johnston, Jr., Roland L. Gasmena, Mark Stephen Miller, Paul Anthony Lum, Jasmine Keuk, Ronaldo J. Nicolas
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Abstract
This present disclosure relates to fluorinated polysiloxane resin compositions, and method for making the same, without the need for using halogen acids, and that display excellent properties of impact resistance, flexibility, chemical resistance, corrosion resistance, weather resistance, heat and fire resistance, abrasion resistance, ultraviolet resistance, hydrophobicity, and substrate adhesion.
Claims24
A method of producing a fluorinated polysiloxane comprising:
- providing an alkoxy-functional silicone resin;
- adding a fluorinated alcohol to the silicone resin to form a mixture;
- adding a catalyst to the mixture;
- and
- reacting the silicone resin and fluorinated alcohol in the presence of the catalyst to form a fluorinated polysiloxane,
- wherein the alkoxy-functional silicone resin has the following structure:
- wherein each R1 and R2 are independently selected from the group consisting of an alkyl group, a phenyl group, and an alkoxide group;
- R3 is selected from the group consisting of an alkyl group and a phenyl group, and n is greater than 1.
5 more elements
A method of producing a fluorinated polysiloxane comprising:
- providing at least one silicone resin selected from the group consisting of hydroxyl-functional silicone resins, alkoxy-functional silicone resins and mixtures thereof;
- adding a fluorinated alcohol to the silicone resin to form a mixture;
- adding a catalyst to the mixture;
- and
- reacting the silicone resin and fluorinated alcohol in the presence of the catalyst to form a fluorinated polysiloxane,
- wherein the fluorinated polysiloxane retains some hydroxyl or alkoxy functionality, and
- wherein the ratio of fluorinated alcohol to alkoxy or hydroxyl functionality is about 1:1 to about 3:1.
4 more elements
Dependencies are inferred from the claim text.