Treated Fillers, Compositions Containing Same, and Articles Prepared Therefrom

Patent metadata

Field	Value
Publication number	US-2015126657-A1
Application number	US-201414508411-A
Country	US
Kind code	A1
Filing date	Oct 7, 2014
Priority date	Oct 7, 2013
Publication date	May 7, 2015
Grant date	—

Abstract

The present invention includes a process for producing treated filler that includes (a) treating a slurry that includes untreated filler where the untreated filler has not been previously dried, with a treating composition that includes a treating agent, thereby forming a treated filler slurry, and (b) drying the treated filler slurry to produce treated filler. The treating agent can include a polymer having (i) at least one first group that interacts with the untreated filler and (ii) at least one second group that interacts with a rubber matrix into which the treated filler is incorporated. The present invention also is directed to treated filler prepared by the process, as well as rubber compounding compositions and tires including the treated filler.

First claim

What is claimed is:

1 . A process for producing treated filler comprising:
(a) treating a slurry comprising untreated filler wherein said untreated filler has not been previously dried, with a treating composition comprising a treating agent, thereby forming a treated filler slurry; and (b) drying said treated filler slurry to produce treated filler, wherein said treating agent comprises a polymer comprising (i) at least one first group that interacts with said untreated filler and (ii) at least one second group that interacts with a rubber matrix into which said treated filler is incorporated.

2 . The process of claim 1 , wherein said untreated filler is chosen from aluminum silicate, silica gel, colloidal silica, precipitated silica, and mixtures thereof.

3 . The process of claim 1 , wherein the filler comprises precipitated silica.

4 . The process of claim 1 , wherein the polymer is selected from an acrylic polymer, a styrene butadiene latex, a natural rubber latex, or combinations thereof.

5 . The process of claim 4 , wherein the acrylic polymer is selected from an acrylic random copolymer, an acrylic comb polymer, an acrylic block copolymer, a hyperbranched acrylic polymer, or combinations thereof.

6 . The process of claim 5 , wherein the hyperbranched acrylic polymer at least partially encapsulates the treated filler.

7 . The process of claim 1 , wherein the at least one first group is selected from an ester, carboxylic acid, imide, anhydride, diacid, lactone, oxirane, isocyanate, alkoxysilane, hydrolysis products thereof, salts thereof, or combinations thereof.

8 . The process of claim 1 , wherein the at least one second group is selected from formyl, keto, thiol, slufido, halo, amino, alkenyl, alkynyl, alkyl, hydrolysis products thereof, salts thereof, or combinations thereof.

9 . The process of claim 1 , wherein the at least one second group is selected from hydroxyl, anhydride, oxirane, hydrolysis products thereof, salts thereof, or combinations thereof.

10 . The process of claim 1 , wherein the treating composition further comprises an organosilane coupling agent represented by formula (II):
(R 1 ) a (R 2 ) b SiX 4-a-b   (II),
wherein each R 1 is independently a hydrocarbyl group comprising 1 to 36 carbon atoms and a functional group, wherein the functional group of the hydrocarbyl group is vinyl, allyl, hexenyl, epoxy, glycidoxy, (meth)acryloxy, sulfide, isocyanato, polysulfide, mercapto, or halogen; each R2 is independently a hydrocarbyl group having from 1 to 36 carbon atoms or hydrogen, X is independently halogen or alkoxy having 1 to 36 carbon atoms; a is 0, 1, 2, or 3; b is 0, 1, or 2; (a+b) is 1, 2, or 3; provided that when b is 1, (a+b) is 2 or 3.

11 . The process of claim 10 , wherein the treating composition further comprises an organosilane different from the organosilane represented by formula (II).

12 . The process of claim 1 , wherein the treating composition further comprises a coupling agent comprising an organosilane selected from the group consisting of (4-chloromethyl-phenyl) trimethoxysilane, (4-chloromethyl-phenyl) triethoxysilane, [2-(4-chloromethyl-phenyl)-ethyl]trimethoxysilane, [2-(4-chloromethyl-phenyl)-ethyl]triethoxysilane, (3-chloro-propenyl)-trimethoxysilane, (3-chloro-propenyl)-triethoxysilane, (3-chloro-propyl)-triethoxysilane, (3-chloro-propyl)-trimethoxysilane, trimethoxy-(2-p-tolyl-ethyl)silane and triethoxy-(2-p-tolyl-ethyl)silane, and combinations thereof.

13 . The process of claim 1 , wherein the treatment composition further comprises a non-coupling agent that is different from the treating agent and wherein the non-coupling agent that is different from the treating agent is one or more of a biopolymer, fatty acid, organic acid, polymer emulsion, polymer coating composition, and combinations thereof.

14 . The process of claim 1 , wherein the treatment composition further comprises a non-coupling agent selected from an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, and combinations thereof, present in an amount of from greater than 1% to 25% by weight based on the weight of untreated filler.

15 . The process of claim 1 , wherein
the treated filler comprises treated precipitated silica; and the treating composition further comprises:
(i) at least one coupling agent, and
(ii) a non-coupling agent chosen from anionic, nonionic and/or amphoteric surfactants, which is present in an amount of from greater than 1% to 25% by weight based on the weight of untreated filler.

16 . A treated filler produced by the process of claim 1 .

17 . A rubber composition comprising the treated filler produced by the process of claim 1 .

18 . The rubber composition of claim 17 , wherein the rubber composition comprises natural rubber.

19 . The rubber composition of claim 17 , wherein the rubber composition is a rubber compounding master batch.

20 . A process for producing treated precipitated silica comprising:
(a) combining an alkali metal silicate and an acid to form a slurry comprising untreated silica, wherein said untreated silica has not been previously dried; (b) treating said slurry with a treating composition comprising a treating agent, thereby forming a treated slurry; and (c) drying said treated slurry to produce a treated precipitated silica, wherein said treating agent comprises a polymer comprising (i) at least one first group that interacts with said untreated silica and (ii) at least one second group that interacts with a rubber matrix into which said treated silica is incorporated.

21 . The process of claim 20 , wherein the polymer is selected from an acrylic polymer, a styrene butadiene latex, a natural rubber latex, or combinations thereof.

22 . The process of claim 21 , wherein the acrylic polymer is selected from an acrylic random copolymer, an acrylic comb polymer, an acrylic block copolymer, a hyperbranched acrylic polymer, or combinations thereof.

23 . The process of claim 22 , wherein the hyperbranched acrylic polymer at least partially encapsulates the treated filler.

24 . The process of claim 20 , wherein the at least one first group is selected from an ester, carboxylic acid, imide, anhydride, diacid, lactone, oxirane, isocyanate, alkoxysilane, hydrolysis products thereof, salts thereof, or combinations thereof.

25 . The process of claim 20 , wherein the at least one second group is selected from formyl, keto, thiol, slufido, halo, amino, alkenyl, alkynyl, alkyl, hydrolysis products thereof, salts thereof, or combinations thereof.

26 . The process of claim 20 , wherein the at least one second group is selected from hydroxyl, anhydride, oxirane, hydrolysis products thereof, salts thereof, or combinations thereof.

27 . The process of claim 20 , wherein said alkali metal silicate comprises aluminum silicate, lithium silicate, sodium silicate, and/or potassium silicate.

28 . The process of claim 20 , wherein the treating composition further comprises a coupling agent comprising an organosilane, selected from the group consisting of (4-chloromethyl-phenyl) trimethoxysilane, (4-chloromethyl-phenyl) triethoxysilane, [2-(4-chloromethyl-phenyl)-ethyl]trimethoxysilane, [2-(4-chloromethyl-phenyl)-ethyl]triethoxysilane, (3-chloro-propenyl)-trimethoxysilane, (3-chloro-propenyl)-triethoxysilane, (3-chloro-propyl)-triethoxysilane,

Assignees

• Ppg Ind Ohio Inc

Inventors

• Okel Timothy Allen
• Votruba-Drzal Peter Lawrence
• Martin Justin Jonathan
• Kollah Raphael O
• Wilt Truman
• Rearick Brian K
• Edelman Clint Steven
• Anderson Linda K
• Wang Feng
• Olson Kurt G

Classifications

• C08K5/09 Primary

  Carboxylic acids; Metal salts thereof; Anhydrides thereof · CPC title

• C09C3/08 Primary

  Treatment with low-molecular-weight {non-polymer} organic compounds {(C09C3/006, C09C3/048 take precedence)} · CPC title

• C09C1/3072

  Treatment with macro-molecular organic compounds · CPC title

• C08K9/08

  Ingredients agglomerated by treatment with a binding agent · CPC title

• C09C1/309 Primary

  Combinations of treatments provided for in groups C09C1/3009 - C09C1/3081 · CPC title