Vulcanizable silylether terminated polymer

• US 3,971,751 A
• Filed: 06/09/1975
• Issued: 07/27/1976
• Est. Priority Date: 06/09/1975
• Status: Expired due to Term

• Current Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
• Original Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
• Inventors: Isayama, Katsuhiko, Hatano, Itaru
• Primary Examiner(s): Jacobs, Lewis T.
• Application Number:
  US05/584,827
• Time in Patent Office: 414 Days
• Field of Search: 260/37 AL, 260/2 S, 260/67 UA, 260/67 UC, 260/448.2 B
• US Class Current: 524/783
• CPC Class Codes: C08G 65/2606 containing hydroxyl groups
• CPC Class Codes: C08G 65/321 with inorganic compounds
• CPC Class Codes: C08G 65/336 containing silicon
• CPC Class Codes: C08G 65/337 containing other elements organic compounds containing halogens only as halides of a carboxyl group C08G65/332
• CPC Class Codes: C08G 77/50 by carbon linkages C08G77/485 takes precedence

Abstract

A composition comprising a polyether having silicon end group, which composition is changeable to a rubber-like substance upon exposure to atmospheric moisture at room temperature.

Claims

1. A composition comprising a polyether consisting essentially of chemically combined units of the formula --R^III --O--, having a molecular weight of between 500 to 15,000, and terminal silylether groups of the formula ##EQU19## wherein R^I is an alkyl or aryl radical having from 1 to 12 carbon atoms, --R^II --, is a member selected from the group consisting of --CH₂ --, ##SPC5## ##SPC6##

and --R'"'"'--OCH₂ --, wherein R'"'"' is a divalent hydrocarbon radical having 1 to 12 carbon atoms and selected from the group consisting of alkylene radicals, cycloalkylene radicals, arylene radicals and aralkylene radicals;

--R-- is a divalent alkylene radical selected from the group consisting of --CH₂ CH₂ --, ##EQU20## and --CH₂ CH₂ CH₂ CH₂ --, X is a member selected from the class consisting of halogen radicals, alkoxy radicals, acyloxy radicals, ketoximato radicals, amino radicals, amide radicals and mercaptide radicals;

a is a whole number equal to 0, 1 or 2 and b is a whole number equal to 0 to 1.

2. The composition of claim 1, wherein the polyether is a propylene polyether having a molecular weight between 3,000 to 12,000.

3. The composition of claim 1, wherein X is a radical of alkoxy radical, acyloxy radical or ketoximato radical.

4. The composition of claim 2, wherein the alkoxy radical a member selected from the group consisting of CH₃ O--, ##EQU21## and ClCH₂ CH₂ O--.

5. The composition of claim 1, wherein R^II is --CH₂ --.

6. The composition of claim 1, wherein said polyether is admixed with a filler.

7. The composition of claim 6, wherein said filler is selected from the group consisting of silica aerogel, carbon black, calcium carbonate, titanium oxide, zinc oxide and mixtures of the foregoing.

8. The composition of claim 1, wherein said polyether is admixed with a silanol condensation catalyst in an amount sufficient to cure said composition upon exposure to moisture.

9. The composition of claim 8, wherein said polyether is admixed with a filler.

10. The composition of claim 9, wherein said polyether is further admixed with a plasticizer.

11. The composition of claim 1 subjected to curing.

12. The composition of claim 2, subjected to curing.

13. The composition of claim 3, subjected to curing.

14. The composition of claim 4, subjected to curing.

15. The composition of claim 5, subjected to curing.

16. The composition of claim 6, subjected to curing.

17. The composition of claim 7, subjected to curing.

18. The composition of claim 8, subjected to curing.

19. The composition of claim 9, subjected to curing.

20. The composition of claim 10, subjected to curing.