WO2020152697A1 - Composition de caoutchouc et mises en application associées - Google Patents

Composition de caoutchouc et mises en application associées Download PDF

Info

Publication number
WO2020152697A1
WO2020152697A1 PCT/IN2020/050001 IN2020050001W WO2020152697A1 WO 2020152697 A1 WO2020152697 A1 WO 2020152697A1 IN 2020050001 W IN2020050001 W IN 2020050001W WO 2020152697 A1 WO2020152697 A1 WO 2020152697A1
Authority
WO
WIPO (PCT)
Prior art keywords
phr
rubber
range
rubber composition
epoxidized natural
Prior art date
Application number
PCT/IN2020/050001
Other languages
English (en)
Inventor
Pranab DEY
Rupesh GILBERT
Sujith Sasidharan Nair
Original Assignee
Ceat Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ceat Limited filed Critical Ceat Limited
Publication of WO2020152697A1 publication Critical patent/WO2020152697A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L15/00—Compositions of rubber derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/006—Additives being defined by their surface area

Definitions

  • the present disclosure relates to a rubber composition and in particular to a rubber composition for an inner liner, transition liner and body ply skim of a tire.
  • butyl mbber/halogenated butyl rubber compositions are generally used in inner liner of a tubeless tire in order to reduce the air permeation.
  • a rubber layer called transition liner is generally used between an inner liner and a ply skim to avoid the chance of butyl rubber compound penetration at lower gauges.
  • the entire inner component assembly of the tire, i.e., body ply skim, transition liner and inner liner makes the tire manufacturing process complex involving multiple steps. It also leads to increase in tire weight which deteriorates tire rolling resistance.
  • the plies are treated with adhesive before the rubber is applied.
  • the resulting reinforced-rubber coat is normally about 1 mm thick.
  • the rubber ply coating is commonly known as a‘body ply skim’ and is referred to as such in the following description.
  • the rubber composition used in the ply skim must have good adhesion to the cords used in the body ply, good hysteresis so that heat generation is low, and good mechanical properties (e.g., modulus and elongation).
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • the present disclosure there is provided a process of preparing the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%, the process comprising: contacting at least one epoxidized natural rubber, styrene butadiene rubber, and at least one reinforcing filler to obtain the composition.
  • a tire comprising the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising body ply, and inner liner, wherein the body ply, and the inner liner is made up of the rubber composition of the present disclosure.
  • a process for manufacturing the tire comprising: (a) obtaining the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%; (b) preparing the body ply, transition liner, and inner liner from the rubber composition of step (a) to obtain an unified assembly; and (c) introducing the unified assembly from step (b) to a tire building machine to obtain a tire.
  • Figure 1 illustrates a partial cross-section view of a conventional tire, in accordance with an embodiment of the present disclosure.
  • Figure 2 illustrates a partial cross-section of the tire of the present disclosure, in accordance with an embodiment of the present disclosure.
  • the articles“a”,“an” and“the” are used to refer to one or to more than one (i.e., to at least one) of the grammatical object of the article.
  • Ratios, concentrations, amounts, and other numerical data may be presented herein in a range format. It is to be understood that such range format is used merely for convenience and brevity and should be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited.
  • a temperature range of about 150-170°C should be interpreted to include not only the explicitly recited limits of about 150°C to about 170°C, but also to include sub-ranges, such as 150-165°C, 160-170°C, and so forth, as well as individual amounts, including fractional amounts, within the specified ranges, such as 150.2 °C, and 165.5 °C, for example.
  • the term“at least one” is used to mean one or more and thus includes individual components as well as mixtures/combinations.
  • the term“phr” refers to parts per hundred rubber, it is a unit well used in the field of rubber technology to define the amount of ingredients used.
  • unified assembly refers to the components of tire wherein the body ply, transition liner and inner liner are made up of the rubber composition of the present disclosure. Since the body ply, transition liner and inner liner are made up of the same material, this is referred as unified assembly.
  • the present disclosure provides a rubber composition suitable for use in the ply, transition liner, as well as inner liner of a tire that possesses a good balance of air retention property and good ply adhesion property.
  • the rubber composition of the present disclosure can be used for coating the ply fabric (polyester, nylon) at a higher rubber gauge.
  • the rubber composition of the present disclosure provides a solution of using a unified rubber composition for all three components in tire, thereby simplifying the tire manufacturing process ( Figure 1).
  • the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%, meets the performance requirements as well.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation of 25%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation of 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, is selected from the group consisting of clay, carbon nanotube, single walled carbon nanotube, graphene, reduced graphene oxide, polyhedral oligomeric silsesquioxane (POSS), wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • PES polyhedral oligomeric silsesquioxane
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 20 - 50 phr of carbon black, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 7 phr of at least one cure activator, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; and (e) 0 - 7 phr of at least one cure activator, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 3 phr of at least one antioxidant, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; and (f) 0 - 3 phr of at least one antioxidant, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0
  • the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; and (g) 0 - 5 phr of at least one process aid, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 1.5 - 5.0 phr of at least one curing agent, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; and (h) 1.5 - 5.0 phr of at least one curing agent, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; and (i)
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 1.5 phr of at least one retarder, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; (i) 0 - 6 phr of at least one curing accelerator; and (j) 0— 1.5 phr of at least one retarder, wherein the at least one epoxidized
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 20 - 50 phr of carbon black, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%, wherein carbon black has a surface area in the range of 30 - 100 m 2 /g.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black having a surface area in the range of 30 - 100 m 2 /g; and (e)
  • the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black having a surface area in the range of 30 - 100 m 2 /g; (e) 0 - 7 phr of at least one cure activator; and (f) 0— 3 phr of at least one antioxidant, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black having a surface area in the range of 30 - 100 m 2 /g; (e) 0 -
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black having a surface area in the range of 30 - 100 m 2 /g; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; and (h) 1.5 - 5.0 phr of at least one curing agent, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black having a surface area in the range of 30 - 100 m 2 /g; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; and (i) 0 - 6 phr of at least one curing accelerator, wherein the at least one epoxidized natural rubber; (b) 10 - 40 ph
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black having a surface area in the range of 30 - 100 m 2 /g; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; (i) 0 - 6 phr of at least one curing accelerator; and (j) 0 - 1.5 p
  • a rubber composition as disclosed herein wherein the at least one cure activator is selected from the group consisting of zinc oxide, stearic acid, and combinations thereof.
  • a rubber composition as disclosed herein wherein the at least one antioxidant is selected from the group consisting of N-(l,3-dimethylbutyl)-N'-phenyl-p-phenylendiamine (6PPD), 2,2,4-trimethyl-l,2-dihydroquinoline (TQ), and combinations thereof.
  • the at least one antioxidant is selected from the group consisting of N-(l,3-dimethylbutyl)-N'-phenyl-p-phenylendiamine (6PPD), 2,2,4-trimethyl-l,2-dihydroquinoline (TQ), and combinations thereof.
  • a rubber composition as disclosed herein wherein the at least one process aid is selected from the group consisting of is selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof.
  • PF phenol formaldehyde
  • C5 hydrocarbon resin C5 hydrocarbon resin
  • C9 hydrocarbon resin alpha methyl styrene resin
  • TDAE treated distillate aromatic extract
  • a rubber composition as disclosed herein wherein at least one curing accelerator is selected from the group consisting of tetra methyl thiuram monosulphide (TMTM), N- tertiary butyl-2-benzothiazole sulphenamides (TBBS), N-cyclohexyl-2- benzothiazole sulfenamide (CBS), and combinations thereof.
  • TMTM tetra methyl thiuram monosulphide
  • TBBS N- tertiary butyl-2-benzothiazole sulphenamides
  • CBS N-cyclohexyl-2- benzothiazole sulfenamide
  • a rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%, wherein the composition has gas transmission rate (GTR) in the range of 50 -550 cm 3 /m 2 -24h-0.1MPa.
  • GTR gas transmission rate
  • a process of preparing the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%, the process comprising: contacting at least one epoxidized natural rubber, styrene butadiene rubber, and at least one reinforcing filler to obtain the composition.
  • a process of preparing the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0— 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; (i) 0 - 6 phr of at least one curing accelerator; and (j) 0 - 1.5 phr of at least one retarder, wherein the at least one
  • a process of preparing the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; (i) 0 - 6 phr of at least one curing accelerator; and (j) 0 - 1.5 phr of at least one retarder, wherein the at least one
  • a tire comprising the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0 - 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; (i) 0 - 6 phr of at least one curing accelerator; and (j) 0 - 1.5 phr of at least one retarder, wherein the at least one
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition as disclosed herein.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, is selected from the group consisting of clay, carbon nanotube, single walled carbon nanotube, graphene, reduced graphene oxide, polyhedral oligomeric silsesquioxane (POSS), wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • PES polyhedral oligomeric silsesquioxane
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 20 - 50 phr of carbon black, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 7 phr of at least one cure activator, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 3 phr of at least one antioxidant, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 5 phr of at least one process aid, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 1.5 - 5.0 phr of at least one curing agent, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 6 phr of at least one curing accelerator, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; and (d) 0 - 1.5 phr of at least one retarder, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%.
  • a tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g; (d) 20 - 50 phr of carbon black; (e) 0 - 7 phr of at least one cure activator; (f) 0— 3 phr of at least one antioxidant; (g) 0 - 5 phr of at least one process aid; (h) 1.5 - 5.0 phr of at least one curing agent; (i) 0 - 6 phr
  • a process for manufacturing the tire comprising: body ply, transition liner, and inner liner, wherein the body ply, transition liner, and the inner liner is made up of the rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%, the process comprising: (a) obtaining the rubber composition as described herein; (b) preparing the body ply and inner liner together or separately from the rubber composition of step (a) to obtain an unified assembly; (c) introducing the unified assembly from step (b) to
  • a rubber composition which can be used for body ply, transition liner, as well as inner liner of a tire along with improvement in gas barrier property and other mechanical properties was sought for. This was with the aim to investigate a more economical solution in reducing the gas permeation through rubber and improving the strength, which could be a viable choice for tire components (ply skim, transition liner, and inner liner).
  • Exemplary rubber compositions of the present disclosure are illustrated in the Table 1 below.
  • the rubber composition of the present disclosure was compounded using a rubber mixing apparatus in two stages (Stage 1 and Stage 2) and sheeted out on two-roll mill or twin-screw sheeter which is a machinery traditionally used for mixing rubber compounds according to ASTM 3182.
  • the first mixture was then cured with 3.5 phr of sulphur and 2.7 phr of accelerators at a temperature in the range of 95°C -115°C to obtain the rubber composition.
  • the addition of accelerators and sulphur were delayed to the last part of the process to prevent premature vulcanization during compounding.
  • the Rubber compositions were then sheeted out with a thickness of at least 5 mm.
  • the first mixture (master batch) was kept as such for at least 4 hours before converting it to the final product.
  • the nip was adjusted to 0.8 mm, and the stock was passed through the nip endwise six times, alternating the right and left ends. Further the nip was adjusted to 6 mm and the batch was passed four times without banding or rolling. Mooney viscosity, Mooney scorch and Carbon black dispersion specimens were removed from the batch. The nip was again adjusted to 3 mm and remaining compound was loaded onto the mill and continuous smooth stock was sheeted out to obtain the rubber composition.
  • Figure 1 illustrates the design of a conventional tire (100).
  • the conventional tire comprises of ply skim compound (101 and 103), transition liner (104), and inner liner (105) made up of different rubber compositions.
  • Component 101 and 103 are made of rubber compound having identical composition, whereas component 102 represents reinforcement materials such as nylon, polyester, rayon and/or aramid.
  • the different rubber compositions for 103, 104, and 105 resulting in the difficulties pertaining to smooth and economic manufacturing process of tire. It also leads to increase in tire weight which deteriorates tire rolling resistance.
  • Figure 2 illustrates the design of the tire (200) of the present disclosure. It discloses that ply skim compound (201 and 203), transition liner (204), and inner liner (205) of the tire of the present disclosure in made up of the rubber composition of the present disclosure thereby eliminating different components for inner liner, transition liner calendaring or extrusion. As a result of this the process for manufacturing of tire of the present disclosure provides compounds standardization and process ease, without increasing the weight of the tire through undesirable component elimination.
  • Component 202, in Figure 2 represents reinforcement materials such as nylon, polyester, rayon and/or aramid.
  • the rubber composition of the present disclosure was used in the tire manufacturing process. Two separate routes (Route 1 and Route 2) were followed in the tire manufacturing process.
  • GTR Gas transmission rate
  • GTR test estimates the steady-state rate of transmission of a gas through
  • the present disclosure discloses a particular unified type of rubber composition
  • a particular unified type of rubber composition comprising: (a) 70 - 100 phr of at least one epoxidized natural rubber; (b) 10 - 40 phr of styrene butadiene rubber; and (c) 20 - 60 phr of at least one reinforcing filler having surface area in the range of 10 m 2 /g to 800 m 2 /g, wherein the at least one epoxidized natural rubber has a percentage epoxidation in the range of 25% - 50%, for tire portion selected from inner liner, body ply skim, transition liner.
  • the rubber composition of the present disclosure eliminates usage of different compounds and sub-assemblies for inner liner, transition liner, and body ply skim separately.
  • a simplified tire manufacturing process by eliminating different components for inner liner, transition liner calendaring or extrusion is also provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne une composition de caoutchouc comprenant : (A) de 70 à 100 phr d'au moins un caoutchouc naturel époxydé; (b) 10 à 40 phr de caoutchouc styrène butadiène; et (c) 20 à 60 phr d'au moins une charge de renforcement ayant une surface dans la plage de 10 m2/g à 800 m2/g, le ou les caoutchoucs naturels époxydés ayant un pourcentage d'époxydation dans la plage de 25 % à 50 %. La présente invention concerne également un procédé de préparation de ladite composition de caoutchouc. L'invention concerne également un pneu comprenant la composition de caoutchouc de la présente invention. L'invention concerne en outre un procédé de fabrication du pneu.
PCT/IN2020/050001 2019-01-23 2020-01-01 Composition de caoutchouc et mises en application associées WO2020152697A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201921002874 2019-01-23
IN201921002874 2019-01-23

Publications (1)

Publication Number Publication Date
WO2020152697A1 true WO2020152697A1 (fr) 2020-07-30

Family

ID=71736546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2020/050001 WO2020152697A1 (fr) 2019-01-23 2020-01-01 Composition de caoutchouc et mises en application associées

Country Status (1)

Country Link
WO (1) WO2020152697A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023069073A1 (fr) * 2021-10-19 2023-04-27 Compagnie Generale Des Etablissements Michelin Composition d'élastomère à fonction étain à teneur réduite en oxyde de graphène
US20230356546A1 (en) * 2022-05-04 2023-11-09 American Kenda Rubber Industrial Co., Ltd. Inner tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070137753A1 (en) * 2005-12-19 2007-06-21 Sumitomo Rubber Industries, Ltd. Rubber composition for inner liner and tire having inner liner using the same
CA2627637A1 (fr) * 2005-10-27 2007-06-21 The Yokohama Rubber Co., Ltd. Composition comprenant une couche de liaison

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2627637A1 (fr) * 2005-10-27 2007-06-21 The Yokohama Rubber Co., Ltd. Composition comprenant une couche de liaison
US20070137753A1 (en) * 2005-12-19 2007-06-21 Sumitomo Rubber Industries, Ltd. Rubber composition for inner liner and tire having inner liner using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023069073A1 (fr) * 2021-10-19 2023-04-27 Compagnie Generale Des Etablissements Michelin Composition d'élastomère à fonction étain à teneur réduite en oxyde de graphène
US20230356546A1 (en) * 2022-05-04 2023-11-09 American Kenda Rubber Industrial Co., Ltd. Inner tube
US11865878B2 (en) * 2022-05-04 2024-01-09 American Kenda Rubber Industrial Co., Ltd. Inner tube

Similar Documents

Publication Publication Date Title
EP1967387B1 (fr) Composition en caoutchouc et paroi latérale de pneu disposant d'une telle composition comportant un caoutchouc de styrène/butadiène à émulsion, caoutchouc cis1,4- polyisoprène et caoutchouc de cis 1,4- polybutadiène
EP2604446B1 (fr) Pneu contenant une couche de caoutchouc renforcée par une corde interne
US7875669B2 (en) Production process of rubber composition and rubber composition using the process, and tire using the rubber composition
EP3095816B1 (fr) Pneumatique et pneumatique à affaissement limité
RU2604618C2 (ru) Пневматическая шина транспортного средства
EP2698407B1 (fr) Composition d'adhésif, procédé de collage l'utilisant, corps en couches et pneu
EP3444298A1 (fr) Composition de caoutchouc
US9150714B2 (en) Sulfur-crosslinkable rubberizing mixture
WO2020152697A1 (fr) Composition de caoutchouc et mises en application associées
EP2620470A1 (fr) Composition de caoutchouc pour pneu et bandage pneumatique
KR20100035236A (ko) 타이어 트레드 베이스용 고무 조성물
US20230151189A1 (en) Rubber composition for tyre body compounds
EP2275284B1 (fr) Composition de caoutchouc avec la surface exposée humide contenant une combinaison de silice et résine donnant du collant spécialisée, et pneu utilisant ce composant
JP2016050274A (ja) タイヤ
DE102016214924B4 (de) Schwefelvernetzbare Kautschukmischung und deren Verwendung
EP2594414A1 (fr) Support de fixation à gomme
JP2017082130A (ja) タイヤ用ゴム組成物
JP2017105868A (ja) タイヤ用ゴム組成物、タイヤ用ゴム組成物の製造方法および空気入りタイヤ
JP5220307B2 (ja) スチールコード被覆用ゴム組成物およびそれを用いたタイヤ
JP2006282790A (ja) 空気入りタイヤ用ゴム組成物
JP2017075266A (ja) タイヤ用ゴム組成物
JP2017075269A (ja) タイヤ用ゴム組成物
CN116783244A (zh) 橡胶组合物
DE102016214923A1 (de) Schwefelvernetzbare Kautschukmischung
DE102016212406A1 (de) Schwefelvernetzbare Kautschukmischung

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20744401

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20744401

Country of ref document: EP

Kind code of ref document: A1