FRICTION DRIVE BELT AND METHOD FOR PRODUCING SAME

• US 20150024892A1
• Filed: 03/07/2013
• Published: 01/22/2015
• Est. Priority Date: 03/09/2012
• Status: Active Grant

• Current Assignee: Mitsuboshi Belting Limited
• Original Assignee: Mitsuboshi Belting Limited
• Inventors: Hineno, Yorifumi, Kan, Takaaki
• Granted Patent: US 9,777,796 B2
• Time in Patent Office: Days
• US Class Current: 474/237
• CPC Class Codes: B29C 35/02 Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mouldcold vulcanisation B29C35/18 ; vulcanising tyres, presses therefor B29D30/0601
• CPC Class Codes: B29D 29/10 Driving belts having wedge-shaped cross-section
• CPC Class Codes: B29K 2019/00 Use of rubber not provided for in a single one of main groups B29K2007/00 - B29K2011/00, as moulding material
• CPC Class Codes: B29K 2509/00 Use of inorganic materials not provided for in groups B29K2503/00 - B29K2507/00, as filler
• CPC Class Codes: B29L 2031/7094 Driving belts
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08K 3/26 Carbonates; Bicarbonates
• CPC Class Codes: C08K 3/346 Clay
• CPC Class Codes: C08K 7/02 Fibres or whiskers
• CPC Class Codes: C08L 23/16 Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
• CPC Class Codes: C08L 71/02 Polyalkylene oxides
• CPC Class Codes: C08L 91/00 Compositions of oils, fats or waxes; Compositions of derivatives thereof
• CPC Class Codes: F16G 1/10 with textile reinforcement
• CPC Class Codes: F16G 5/04 made of rubber F16G5/02 takes precedence consisting of several parts F16G5/16
• CPC Class Codes: F16G 5/08 with textile reinforcement

Abstract

The present invention relates to a friction transmission belt having a friction transmission part, in which the friction transmission part is formed of a rubber composition containing an ethylene-α-olefin elastomer, a mineral-based filler and a surfactant.

Claims

1. A friction transmission belt comprising a friction transmission part, wherein the friction transmission part is formed of a rubber composition comprising an ethylene-α

-olefin elastomer, a mineral-based filler and a surfactant.

2. The friction transmission belt according to claim 1, wherein the mineral-based filler is at least one member selected from the group consisting of a metal carbonate, a metal silicate and a metal oxide.

3. The friction transmission belt according to claim 1, wherein the mineral-based filler is at least one member selected from the group consisting of calcium carbonate, magnesium silicate, aluminum silicate, calcium silicate, talc, clay, and silica.

4. The friction transmission belt according to claim 1, wherein a proportion of the mineral-based filler is from 5 to 50 parts by mass based on 100 parts by mass of the ethylene-α

-olefin elastomer.

5. The friction transmission belt according to claim 1, wherein the mineral-based filler has a pH of 7 or more in accordance with JIS K5101 (2004).

6. The friction transmission belt according to claim 1, wherein the mineral-based filler has a primary average particle diameter of from about 0.5 to 20 μ

m.

7. The friction transmission belt according to claim 1, wherein the mineral-based filler has a specific surface area of from 0.1 to 100 m²/g.

8. The friction transmission belt according to claim 1, wherein the surfactant is a nonionic surfactant.

9. The friction transmission belt according to claim 1, wherein the surfactant is an ether type nonionic surfactant.

10. The friction transmission belt according to claim 1, wherein a proportion of the surfactant is from about 2 to 15 parts by mass based on 100 parts by mass of the ethylene-α

-olefin elastomer.

11. The friction transmission belt according to claim 1, wherein a proportion of the surfactant is from 5 to 50 parts by mass based on 100 parts by mass of the mineral-based filler.

12. The friction transmission belt according to claim 1, wherein the rubber composition further comprises at least one member selected from the group consisting of a paraffin-based plasticizer, carbon black and a short fiber.

13. A method for producing the friction transmission belt described in claim 1, the method comprising vulcanizing an unvulcanized rubber sheet formed of the rubber composition containing the ethylene-α

-olefin elastomer, the mineral-based filler and the surfactant.