Reinforcing material for rubber comprising aluminosilicate particles and rubber composition for tires comprising the same

Patent metadata

Field	Value
Publication number	US-10889702-B2
Application number	US-201916497756-A
Country	US
Kind code	B2
Filing date	Jan 31, 2019
Priority date	Feb 21, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

The present disclosure relates to a reinforcing material for rubber including aluminosilicate particles and a rubber composition for tires including the same. The aluminosilicate particles included in the reinforcing material for rubber according to the present disclosure exhibit an enhanced reinforcing effect due to excellent dispersibility in the rubber composition, but do not hinder processability of the rubber composition. Therefore, the aluminosilicate particles can be suitably applied as a reinforcing material in a rubber composition for tires.

First claim

The invention claimed is:

1. A reinforcing material for rubber comprising amorphous aluminosilicate particles, wherein the aluminosilicate particles are represented by following Chemical Formula 1:
[(M a Al x O 2x ).(Si y O 2y )]. m (H 2 O)  [Chemical Formula 1]

wherein, in Chemical Formula 1,
M is an element selected from the group consisting of Li, Na, K, Rb, Cs, Be, Fr, Ca, Zn, and Mg, or an ion thereof;
a≥0, x>0, y>0, and m≥0;
a/x<1.2; and
3.0<y/x<20.0, and
wherein the aluminosilicate particles satisfy the following conditions:
in a data plot obtained by X-ray diffraction (XRD) of the aluminosilicate particles, a full width at half maximum (FWHM) in a 2θ range of 23° to 37° is 5° to 7° , and a maximum peak intensity (I max ) is in a 2θ range of 23° or more and 25.8° or less, and
wherein a secondary particle size distribution of the aluminosilicate particles has a volume average particle diameter (D mean )of 1 to 25 μm, a geometric standard deviation of 1 to 20 μm, and a 90% cumulative particle diameter (D 90 ) of 1 to 50 μm, when measured using distilled water.

2. The reinforcing material for rubber of claim 1 , wherein the aluminosilicate particles satisfy the following conditions:
a Brunauer-Emmett-Teller surface area (S BET ) of the aluminosilicate particles is 110 to 260 m 2 /g, and an external specific surface area (S EXT ) of the aluminosilicate particles is 90 to 220 m 2 /g according to an analysis of nitrogen adsorption/desorption, and
wherein a volume of micropores (V micro ) having a pore size of less than 2 nm calculated from the S BET by a t-plot method is less than 0.05 cm 3 /g.

3. A rubber composition for tires comprising the reinforcing material for rubber of claim 1 .

4. The rubber composition for tires of claim 3 ,
wherein the rubber composition further comprises at least one diene elastomer.

5. The rubber composition for tires of claim 4 ,
wherein the diene elastomer is at least one selected from the group consisting of a natural rubber, polybutadiene, polyisoprene, a butadiene/styrene copolymer, a butadiene/isoprene copolymer, a butadiene/acrylonitrile copolymer, an isoprene/styrene copolymer, and a butadiene/styrene/isoprene copolymer.

6. A reinforcing material for rubber comprising amorphous aluminosilicate particles, wherein the aluminosilicate particles are represented by following Chemical Formula 1:
[(M a Al x O 2x ).(Si y O 2y )]. m (H 2 O)  [Chemical Formula 1]

wherein, in Chemical Formula 1,
M is an element selected from the group consisting of Li, Na, K, Rb, Cs, Be, Fr, Ca, Zn, and Mg, or an ion thereof;
a≥0, x>0, y>0, and m≥0;
a/x<1.2; and
3.0<y/x<20.0, and
wherein the aluminosilicate particles satisfy the following conditions:
in a data plot obtained by X-ray diffraction (XRD) of the aluminosilicate particles, a full width at half maximum (FWHM) in a 2θrange of 23° to 37° is 5° to 7° , and a maximum peak intensity (I max ) is in a 2θrange of 23° or more and 25.8° or less,
a Brunauer-Emmett-Teller surface area (S BET ) of the aluminosilicate particles is 110 to 260 m 2 /g, and an external specific surface area (S EXT ) of the aluminosilicate particles is 90 to 220 m 2 /g according to an analysis of nitrogen adsorption/desorption,
wherein a volume of micropores (V micro ) having a pore size of less than 2 nm calculated from the S BET by a t-plot method is less than 0.05 cm 3 /g, and
wherein a secondary particle size distribution of the aluminosilicate parties has a volume average particle diameter (D mean )of 1 to 25 μm, a geometric standard deviation of 1 to 20 μm, and a 90% cumulative particle diameter (D 90 ) of 1 to 50 μm, when measured using distilled water.

Assignees

• Lg Chemical Ltd

Inventors

• Choi Kwonil
• Seong Eunkyu
• Lee Hana
• Kim Wooseok
• Oh Myounghwan

Classifications

• C08L9/02 Primary

  Copolymers with acrylonitrile · CPC title

• C08K2201/006

  Additives being defined by their surface area · CPC title

• B60C1/0016

  Compositions of the tread · CPC title

• C08K3/34 Primary

  Silicon-containing compounds · CPC title

• B60C1/00

  Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition · CPC title