Fluorosilicone hydrides

• US 5,317,073 A
• Filed: 03/27/1991
• Issued: 05/31/1994
• Est. Priority Date: 03/27/1991
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Jeram, Edward M., Evans, Edwin R.
• Primary Examiner(s): Marquis, Melvyn I.
• Application Number:
  US07/676,906
• Time in Patent Office: 1,161 Days
• Field of Search: 556/451, 556/485, 528/31, 528/42
• US Class Current: 528/42
• CPC Class Codes: C08G 77/12 containing silicon bound to hydrogen C08G77/045 takes precedence
• CPC Class Codes: C08G 77/24 halogen-containing groups
• CPC Class Codes: C08G 77/385 containing halogens

Abstract

Novel fluorosilicone hydrides are provided which are useful as intermediates in the preparation of epoxy-functional fluorosilicones having improved cure efficiency at low temperatures and improved resistance to solvents and fuels than analogous non-fluoro-functional epoxy-functional silicones prepared from non-fluoro-functional silicone hydrides.

Claims

1. A hydride-functional fluorosilicone selected from the group consisting of:

(A) a hydride-functional fluorosilicone having the general formula ##STR18## (B) a hydride functional fluorosilicone having the general formula ##STR19## (C) a hydride-functional fluorosilicone having the general formula ##STR20## and (D) a hydride-functional fluorosilicone having the general formula ##STR21## wherein R represents a alkyl radical having from 1 to about 10 carbon atoms or a phenyl radical, R² represents a alkyl radical having from 1 to about 10 carbon atoms or phenyl radical, "a" represents a number from 1 to about 100, "b" represents a number from 10 to about 20 "c" represents a number from 1 to about 100, and "d" represents a number from 1 to about 100.

2. An hydride-functional fluorosilicone according to claim 1 wherein R and R² each represents an alkyl radical having from 1 to about 4 carbon atoms.

3. An hydride-functional fluorosilicone according to claim 2 wherein R and R² are each methyl radicals.

4. An hydride-functional fluorosilicone according to claim 1 wherein "a" represents a number from about 3 to about 30.

5. An hydride-functional fluorosilicone according to claim 4 wherein "a" represents a number from about 10 to about 20.

6. An hydride-functional fluorosilicone according to claim 1 wherein "c" represents a number from about 1 to about 20.

7. An hydride-functional fluorosilicone according to claim 6 wherein "c" represents a number from about 1 to about 10.

8. An hydride-functional fluorosilicone according to claim 1 wherein "d" represents a number from about 1 to about 20.

9. An hydride-functional fluorosilicone according to claim 8 wherein "d" represents a number from about 1 to about 10.

10. A hydride-functional fluorosilicone having the general formula ##STR22## wherein R represents an alkyl radical having from 1 to about 10 carbon atoms or a phenyl radical, R¹ represents a perfluoroalkyl radical having from 1 to about 8 carbon atoms, and "c" represents a number from 1 to about 100.

11. A hydride-functional fluorosilicone having the general formula ##STR23## wherein R represents an alkyl radical having from 1 to about 10 carbon atoms or a phenyl radical, R¹ represents a perfluoroalkyl radical having from 1 to about 8 carbon atoms, R² represents an alkyl radical having from 1 to about 10 carbon atoms or a phenyl radical and "d" represents a number from 1 about 100.