Underseal composition, and process for the production thereof

• US 5,135,967 A
• Filed: 10/04/1990
• Issued: 08/04/1992
• Est. Priority Date: 01/21/1988
• Status: Expired due to Term

• Current Assignee: Solvay Soda Deutschland GmbH (Solvac SA)
• Original Assignee: Deutsche Solvay-Werke GmbH (Solvac SA)
• Inventors: Korte, Hans-Juergen, Klatte, Gerd, Aumann, Gerd
• Primary Examiner(s): Bleutge, John C.
• Assistant Examiner(s): SWEET, MARK D
• Application Number:
  US07/593,505
• Time in Patent Office: 670 Days
• Field of Search: 523/210, 524/425, 524/427
• US Class Current: 523/210
• CPC Class Codes: B62D 25/2072 Floor protection, e.g. from corrosion or scratching floor mats B60N3/04, armour F41H7/042, insulation B60R13/08, streamlining B62D35/02
• CPC Class Codes: C08K 9/04 Ingredients treated with organic substances treated with macromolecular compounds C08K9/08
• CPC Class Codes: C08L 27/06 Homopolymers or copolymers of vinyl chloride
• CPC Class Codes: C09D 127/06 Homopolymers or copolymers of vinyl chloride
• CPC Class Codes: C09D 151/003 grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds C09D151/04, C09D151/06 take precedence

Abstract

The present invention relates to an underseal composition for motor vehicles, comprising a finely divided vinyl chloride homopolymer, copolymer, terpolymer or graft polymer, a plasticizer, a stabilizer, and a filler comprising calcium carbonate particles, wherein at least a part of said filler is provided with a surface coating formed by a surface treatment agent which comprises at least one saturated or unsaturated carboxylic acid, fatty acid or substituted fatty acid, said carboxylic acid or fatty acid having from 2 to 32 carbon atoms and containing at least one polar group in addition to at least one --COOH group, or a salt of said carboxylic acid or fatty acid. The underseal composition has improved rheological properties.

Claims

1. An underseal composition for motor vehicles, comprising

(a) about 10 to 60 parts by weight of a finely divided vinyl chloride homopolymer, copolymer, terpolymer or graft polymer,

(b) about 10 to 60 parts by weight of at least one plasticizer or plasticizer mixture,

(c) about 1 to 12 parts by weight of at least one additive selected form the group consisting of a dye, a colored pigment, an adhesion promoter and a stabilizer, and

(d) about 10 to 60 parts by weight of a filler comprising calcium carbonate particles, wherein at least a part of the surface of the calcium carbonate particles of said filler is provided with a surface coating, in an amount of about 0.3 to 12% by weight, based on the total weight of said filler, which comprises a surface treatment agent comprising at least one saturated or unsaturated monocarboxylic acid or dicarboxylic acid containing from 2 to 32 carbon atoms, or a salt of said acid, wherein said acid contains at least one additional polar group selected from the group consisting of hydroxyl and amino.

2. An underseal composition as claimed in claim 1, wherein said acid contains from 10 to 22 carbon atoms.

3. An underseal composition as claimed in claim 1, wherein said polar group is a hydroxyl group.

4. An underseal composition as claimed in claim 3, wherein said acid is hydroxystearic acid, hydroxypalmitic acid, hydroxyoleic acid or a salt thereof.

5. An underseal composition as claimed in claim 4, wherein said acid is 12-hydroxystearic acid.

6. An underseal composition as claimed in claim 1, wherein said acid is aminostearic acid, aminolinoleic acid or a salt thereof.

7. An underseal composition as claimed in claim 1, wherein said salt is an alkali metal salt or an ammonium salt.

8. An underseal composition as claimed in claim 1, wherein said surface coating is rpesent in an amount of 1 to 5% by weight, based on the total weight of the calcium carbonate particles of said filler.

9. A composition as claimed in claim 1 comprising from 15 to 40 parts by weight of said filler.

10. A composition as claimed in claim 1 comprising from 20 to 45 parts by weight of said at least one plasticizer or plasticizer mixture.

11. A composition as claimed in claim 1 comprising from 25 to 45 parts by weight of said vinyl chloride homopolymer, copolymer, terpolymer or graft polymer.

12. A composition as claimed in claim 1 comprising from 2 to 6 parts by weight of said at least one additive.

13. A composition as claimed in claim 1, wherein said calcium carbonate particles have a mean particle size of about 0.01 to 20 μ

m before treatment.

14. A composition as claimed in claim 13, wherein said calcium carbonate particles have a mean particle size of about 0.05 to 5 μ

m.

15. A composition as claimed in claim 1, further comprising a solvent or diluent.

16. A composition as claimed in claim 1, wherein said calcium carbonate particles have a specific surface area before treatment (BET, adsorption using nitrogen) of about 0.5 to 100 m² /g.

17. A composition as claimed in claim 16, wherein said calcium carbonate particles have a specific surface area of 1 to 50 m² /g.

22. A composition as claimed in claim 1, wherein said filler comprises a synthetic surface-coated calcium carbonate.

23. A composition as claimed in claim 22, wherein said calcium carbonate is formed by passing carbon dioxide into a calcium hydroxide suspension and subsequently surface-treated with an alkali metal salt or ammonium salt of a saturated or unsaturated monocarboxylic acid or dicarboxylic acid containing at least one additional polar group.

24. A composition as claimed in claim 1, wherein said surface coating comprises a calicum salt or an alkali metal salt of at least one fatty acid which contains from 10 to 22 carbon atoms and at least one hydroxyl group.

25. A composition as claimed in claim 24, further comprising an ammonium salt of said fatty acid.

26. A composition as claimed in claim 24, wherein said fatty acid is 12-hydroxystearic acid.

27. A composition as claimed in claim 1, wherein said monocarboxylic acid or dicarboxylic acid contains one additional polar group.

18. An underseal composition for motor vehicles, comprising

(a) about 10 to 60 parts by weight of a finely divided vinyl chloride homopolymer, copolymer, terpolymer or graft polymer,

(b) about 10 to 60 parts by weight of at least one plasticizer or plasticizer mixture,

(c) about 1 to 12 parts by weight of at least one additive selected form the group consisting of a dye, a colored pigment, an adhesion promoter and a stabilizer, and

(d) about 10 to 60 parts by weight of a filler comprising calcium carbonate particles, wherein at least a part of the surface of the calcium carbonate particles of said filler is provided with a surface coating, in an amount of about 0.3 to 12% by weight, based on the total weight of said filler, which comprises a surface treatment agent comprising

(a) from about 0.01 to 20 parts by weight of at least one unsaturated monocarboxylic acid or dicarboxylic acid containing from 2 to 32 carbon atoms and containing no additional polar groups or at least one additional polar group, or a salt of said unsaturated acid, and

(b) from about 80 to 99.99 parts by weight of at least one saturated monocarboxylic acid or dicarboxylic acid containing from 2 to 32 carbon atoms and containing at least one additional polar group, or a salt of said saturated acid, based on 100 parts by weight of the total amount of acids or salts thereof employed.

19. A composition as claimed in claim 18, comprising from 0.1 to 6 parts by weight of said at least one unsaturated acid or salt thereof and from 94 to 99.9 parts by weight of said at least one saturated acid or salt thereof.

20. A composition as claimed in claim 18, wherein said unsaturated acid is an aliphatic monocarboxylic acid or dicarboyxlic acid containing at least one hydroxul carbonyl, amino, ether or additional carboxyl group, or a salt of said unsaturated acid.

21. A composition as claimed in claim 18, wherein said saturated compound is an aliphatic monocarboxylic acid or dicarboxylic acid containing at least one hydroxyl, carbonyl, amino, ether or additional carboxyl group, or a salt of said saturated acid.

28. An underseal composition for motor vehicles, comprising

(a) a finely divided vinyl choride homopolymer, copolymer, terpolymer or graft polymer,

(b) a plasticizer,

(c) a stabilizer, and

(d) a filler comprising calcium carbonate particles, wherein at least a part of the surface of said filler is provided with a surface coating comprising a surface treatment agent which comprises at least one saturated or unsaturated carboxylic acid containing from 2 to 32 carbon atoms, or a salt of said acid, wherein said acid contains at least one additional polar group selected from the group consisting of hydroxyl and amino.

29. An underseal composition as claimed in claim 28, wherein said acid contains from 10 to 22 carbon atoms.

30. An underseal composition as claimed in claim 28, wherein said acid is a saturated or unsaturated monocarboxylic or dicarboxylic acid.

31. An underseal composition as claimed in claim 28, wherien said acid is an unsubstituted or substituted fatty acid.

32. An underseal composition as claimed in claim 28, wherein said acid contains one additional polar group.

33. An underseal composition as claimed in claim 28, wherein said polar group is a hydroxyl group.

34. An underseal composition as claimed in claim 33, wherein said acid is hydroxystearic acid, hydroxypalmitic acid, hydroxyoleic acid or a salt thereof.

35. An underseal composition as claimed in claim 34, wherein said acid is 12-hydroxystearic acid.

36. An underseal composition as claimed in claim 28, wherein said acid is aminostearic acid, aminolinoleic acid or a salt thereof.