Anhydrous, nonflammable tire sealer and inflator

• US 4,970,242 A
• Filed: 08/18/1989
• Issued: 11/13/1990
• Est. Priority Date: 08/18/1989
• Status: Expired due to Term

• Current Assignee: Pennzoil Products Co. (Shell Plc)
• Original Assignee: Nationwide Industries Incorporated (PrimeSource Building Products Incorporated)
• Inventors: Lehman, Richard W.
• Primary Examiner(s): Foelak, Morton
• Application Number:
  US07/395,775
• Time in Patent Office: 452 Days
• Field of Search: 521/78, 521/79, 521/81, 521/84.1, 521/150, 523/166, 524/272, 524/13, 106/33
• US Class Current: 521/78
• CPC Class Codes: B29C 73/163 Sealing compositions or agents, e.g. combined with propellant agents
• CPC Class Codes: B29L 2030/00 Pneumatic or solid tyres or parts thereof conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733
• CPC Class Codes: C08J 2309/06 Copolymers with styrene
• CPC Class Codes: C08J 3/091 characterised by the chemical constitution of the organic liquid
• CPC Class Codes: C09K 3/30 for aerosols aerosol containers B65D83/14

Abstract

A novel anhydrous nonflammable tire sealer and inflator composition comprising a hydrochlorofluorocarbon (HCFC) propellant, a solvent, and a rubber resin soluble in the solvent. The composition is packaged in aerosol cans and is used to seal and inflate punctured pneumatic tires. The composition utilizes a solvent-based adhesive resin with a hydrochlorofluorocarbon propellant in order to provide a nonflammable composition which does not utilize environmentally objectionable chlorofluorocarbon (CFC) propellants.

Claims

1. An anhydrous, nonflammable tire sealant and inflator composition comprising:

20 to 70 weight percent of a hydrochlorofluorocarbon propellant;

10 to 75 weight percent of solvent; and

0.1 to 10 weight percent of butadiene-styrene rubber copolymer and/or natural rubber soluble in said solvent.

2. An anhydrous, nonflammable tire sealant and inflator composition according to claim 1 wherein said hydrochlorofluorocarbon propellant is monochlorodifluoromethane.

3. An anhydrous, nonflammable tire sealant and inflator composition according to claim 1 wherein said solvent is 1,1,1-trichloroethane.

4. An anhydrous, nonflammable tire sealant and inflator composition according to claim 1 further including 0.5 to 5 weight percent of at least one tackifying resin soluble in said solvent.

5. An anhydrous, nonflammable tire sealant and inflator composition according to claim 1 further including 0.5 to 5 weight percent of at least one hardening resin soluble in said solvent.

6. An anhydrous, nonflammable tire sealant and inflator composition according to claim 4 or claim 5 wherein said resin is coumarone indene resin.

7. An anhydrous, nonflammable tire sealant and inflator composition according to claim 1 further including 0.1 to 2 weight percent of a corrosion inhibitor.

8. An anhydrous, nonflammable tire sealant and inflator composition according to claim 7 wherein said corrosion inhibitor comprises barium dinonylnaphthalene sulfonate.

9. An anhydrous, nonflammable tire sealant and inflator composition comprising:

20 to 70 weight percent of monochlorodifluoromethane propellant;

10 to 75 weight percent of solvent selected from the group consisting of 1,1,1-trichloroethane, perchloroethylene, 1,1-dichloro 2,2,2-trifluoroethane, methylene chloride, tetrachloroethane, trichloroethylene, 1,2-dichloro, 2,2-difluoroethane, 1,1-dichloro 1 fluoroethane, 1 chloro 1,1-difluoroethane, and dichlorofluoromethane;

0.1 to 10 weight percent of butadiene-styrene rubber copolymer and/or natural rubber soluble in said solvent;

0.5 to 5 weight percent of at least one tackifying resin comprising thermoplastic hydrocarbon resin soluble in said solvent; and

0.5 to 5 weight percent of at least one hardening resin comprising thermoplastic hydrocarbon resin soluble in said solvent.

10. An anhydrous, nonflammable tire sealant and inflator composition according to claim 9 further including 0.1 to 2 weight percent of a corrosion inhibitor.

11. An anhydrous, nonflammable tire sealant and inflator composition according to claim 10 wherein said corrosion prohibitor comprises barium dinonylnaphthalene sulfonate.

12. An aerosol container which contains the following anhydrous, nonflammable tire sealant and inflator composition:

20 to 70 weight percent of a hydrochlorofluorocarbon propellant;

10 to 75 weight percent of solvent; and

0.1 to 10 weight percent of butadiene-styrene rubber copolymer and/or natural rubber soluble in said solvent,

13. An anhydrous, nonflammable tire sealant and inflator composition according to claim 12 further including 0.5 to 5 weight percent of at least one tackifying resin soluble in said solvent.

14. An anhydrous, nonflammable tire sealant and inflator composition according to claim 12 further including 0.5 to 5 weight percent of at least one hardening resin soluble in said solvent.

15. An aerosol container according to claim 13 or 14 wherein said resin is coumarone indene resin.

16. An aerosol container according to claim 12 wherein said hydrochlorofluorocarbon propellant is monochlorodifluoromethane.

17. An aerosol container according to claim 12 wherein said solvent is 1,1,1-trichloroethane.

18. An aerosol container according to claim 12 further including 0.1 to 2 weight percent of a corrosion inhibitor.

19. An aerosol container according to claim 18 wherein said corrosion inhibitor comprises barium dinonylnaphthalene sulfonate.

20. An aerosol container which contains the following anhydrous, nonflammable tire sealant and inflator composition:

20to 70 weight percent of monochlorodifluoromethane propellant;

10 to 75 weight percent of solvent selected from the group consisting of 1,1,1-trichloroethane, perchloroethylene, 1,1-dichloro 2,2,2-trifluoroethane, methylene chloride, tetrachloroethane, trichloroethylene, 1,2-dichloro 2,2-difluoroethane, 1,1-dichloro 1 fluoroethane, 1 chloro 1,1-difluoroethane, and dichlorofluoromethane.

0.1 to 10 weight percent of butadiene-styrene rubber copolymer and/or natural rubber soluble in said solvent;

0.5 to 5 weight percent of at least one tackifying resin comprising thermoplastic hydrocarbon resin soluble in said solvent; and

0.5 to 5 weight percent of at least one hardening resin comprising thermoplastic hydrocarbon resin soluble in said solvent.

21. An aerosol container according to claim 20 further including 0.1 to 2 weight percent of a corrosion inhibitor.

22. An aerosol container according to claim 21 wherein said corrosion prohibitor comprises barium dinonylnaphthalene sulfonate.

23. An anhydrous, nonflammable tire sealant and inflator composition comprising:

40 to 55 percent of monochlorodifluoromethane propellant;

40 to 55 weight percent of 1,1,1-trichloroethane solvent;

2 to 3 weight percent of butadiene-styrene rubber copolymer and/or natural rubber soluble in said solvent;

0.5 to 1.5 weight percent of at least one tackifying resin comprising thermoplastic hydrocarbon resin soluble in said solvent;

24. 5 to 1.5 weight percent of at least one hardening resin comprising thermoplastic hydrocarbon resin soluble in said solvent;

and

0.1 to 0.5 weight percent of corrosion inhibitor.

25. An aerosol container which contains the following anhydrous, nonflammable tire sealant and inflator composition:

40 to 55 weight percent of monochlorodifluoromethane propellant;

40 to 55 weight percent of 1,1,1-trichloroethane solvent;

2 to 3 weight percent of butadiene-styrene rubber copolymer and/or natural rubber soluble in said solvent;

0.5 to 1.5 weight percent of at least one tackifying resin comprising thermoplastic hydrocarbon resin soluble in said solvent;

0.5 to 1.5 weight percent of at least one hardening resin comprising thermoplastic hydrocarbon resin soluble in said solvent; and

0.1 to 0.5 weight percent of corrosion inhibitor.