Carbon black pellets bound by functional polymer

Patent metadata

Field	Value
Publication number	US-10604635-B2
Application number	US-201515512613-A
Country	US
Kind code	B2
Filing date	Sep 22, 2015
Priority date	Sep 23, 2014
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A carbon black pellet comprising a plurality of agglomerates, aggregates, or primary carbon black particles and a binder including a functional polymer.

First claim

What is claimed is:

1. A process for making a green tire component comprising steps of:
(i) providing a plurality of free-flowing pellets,
wherein the free-flowing pellets each include
(a) a plurality of carbon black agglomerates, carbon black aggregates, or primary carbon black particles and
(b) a binder including a functional polymer,

wherein the functional polymer is a copolymer deriving from the polymerization of butadiene monomer, styrene monomer, and at least one functional monomer,
wherein the functional polymer includes
(a) from about 3 to about 10 percent by weight polymeric units deriving from the polymerization of styrene,
(b) from about 2 to about 70 percent by weight polymeric units deriving from the polymerization of butadiene, and
(c) from about 20 to about 99 percent by weight polymeric units deriving from the polymerization of the at least one functional monomer, wherein the at least one functional monomer is selected from the group consisting of acid-bearing monomer, amides of ethylenically unsaturated carboxylic acids, esters of ethylenically unsaturated carboxylic acids, and nitriles of ethylenically unsaturated carboxylic acids,

wherein the functional polymer has a glass transition temperature of from −50 to 15° C.;

(ii) mixing the free-flowing pellets with one or more rubbers and one or more vulcanizing agents to prepare a vulcanizable composition of matter; and
(iii) fabricating the vulcanizable composition of matter into a green tire component.

2. The process of claim 1 , further comprising, prior to the step of mixing, steps of:
drying the pellets to form a plurality of final pellets; and
packaging the final pellets.

3. The process of claim 1 , wherein the functional polymer includes multiple distinct functional groups.

4. The green tire component made by the process of claim 1 .

5. A process for making a green tire component comprising steps of:
(i) providing a plurality of free-flowing pellets,
wherein the free-flowing pellets each include
(a) a plurality of carbon black agglomerates, carbon black aggregates, or primary carbon black particles and
(b) a binder including a functional polymer,

wherein the functional polymer is a copolymer deriving from the polymerization of butadiene monomer, styrene monomer, and at least one functional monomer,
wherein the functional polymer includes
(a) from about 2 to about 30 percent by weight polymeric units deriving from the polymerization of styrene,
(b) from about 2 to about 70 percent by weight polymeric units deriving from the polymerization of butadiene, and
(c) from about 20 to about 99 percent by weight polymeric units deriving from the polymerization of the at least one functional monomer,

wherein the functional polymer has a glass transition temperature of from −50 to 15° C.;

(ii) mixing the free-flowing pellets with one or more rubbers and one or more vulcanizing agents to prepare a vulcanizable composition of matter; and
(iii) fabricating the vulcanizable composition of matter into a green tire component;
wherein the at least one functional monomer is selected from the group consisting of acid-bearing monomer, amides of ethylenically unsaturated carboxylic acids, esters of ethylenically unsaturated carboxylic acids, and nitriles of ethylenically unsaturated carboxylic acids.

6. The green tire component made by the process of claim 5 .

7. A process for making a green tire component comprising steps of:
(i) providing a plurality of free-flowing pellets,
wherein the free-flowing pellets each include
(a) a plurality of carbon black agglomerates, carbon black aggregates, or primary carbon black particles and
(b) a binder including a functional polymer,

wherein the functional polymer is a copolymer deriving from the polymerization of butadiene monomer, styrene monomer, and at least one functional monomer,
wherein the functional polymer includes
(a) from about 3 to about 10 percent by weight polymeric units deriving from the polymerization of styrene,
(b) from about 2 to about 70 percent by weight polymeric units deriving from the polymerization of butadiene, and
(c) from about 20 to about 99 percent by weight polymeric units deriving from the polymerization of the at least one functional monomer,

wherein the functional polymer has a glass transition temperature of from −50 to 15° C.;

(ii) mixing the free-flowing pellets with one or more rubbers and one or more vulcanizing agents to prepare a vulcanizable composition of matter; and
(iii) fabricating the vulcanizable composition of matter into a green tire component.

8. The process of claim 7 , wherein the functional polymer includes from about 3 to about 48 percent by weight polymeric units deriving from the polymerization of butadiene.

9. The process of claim 8 , wherein the functional polymer includes from about 35 to about 98 percent by weight polymeric units deriving from the polymerization of the at least one functional monomer.

10. The process of claim 7 , the method further comprising a step of introducing the plurality of carbon black agglomerates, carbon black aggregates, or primary carbon black particles, as a slurry, to a latex including the binder including the functional polymer, prior to the step of providing the plurality of free-flowing pellets.

11. The process of claim 10 , wherein the latex includes from 5 to 35 weight percent solids.

12. The process of claim 10 , wherein the latex includes from 15 to 25 weight percent solids.

13. The green tire component made by the process of claim 7 .

Assignees

• Bridgestone Bandag Llc

Inventors

• Bender David L

Classifications

• C01P2006/33

  Phase transition temperatures · CPC title

• C01P2004/61

  Micrometer sized, i.e. from 1-100 micrometer · CPC title

• C08K3/04 Primary

  Carbon · CPC title

• C09C1/56

  Treatment of carbon black {; Purification} · CPC title

• C01P2006/22

  Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability · CPC title