Process for preparing a masterbatch in the liquid phase
US-9145489-B2 · Sep 29, 2015 · US
Process for preparing a masterbatch in the liquid phase
US9512281B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9512281-B2 |
| Application number | US-201113997458-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 21, 2011 |
| Priority date | Dec 23, 2010 |
| Publication date | Dec 6, 2016 |
| Grant date | Dec 6, 2016 |
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Abstract
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The invention relates to a process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomer latexes and on one or more fillers, comprising the following successive stages: preparation of a stable and homogeneous aqueous dispersion by mixing one or more diene elastomer latexes with one or more stable aqueous dispersions of one or more fillers, the said fillers; homogenization of the aqueous dispersion, coagulation within the aqueous dispersion of the said diene elastomer latex or latexes with the filler or fillers by supplying mechanical energy, recovery of the coagulum, drying the recovered coagulum in order to obtain the masterbatch.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomer latexes and on one or more fillers, comprising: preparing a stable and homogeneous aqueous dispersion (C) by mixing one or more diene elastomer latexes (A) with one or more stable aqueous dispersions (B) comprising one or more surfactants and one or more fillers, homogenizing the aqueous dispersion (C), coagulating within the aqueous dispersion (C) the diene elastomer latex or latexes (A) with the filler or fillers by supplying mechanical energy, recovering the coagulum, drying the recovered coagulum in order to obtain the masterbatch. 2. The process according to claim 1 , wherein the recovering the coagulum is carried out by a filtering operation. 3. The process according to claim 1 , wherein the recovering the coagulum is carried out by a centrifuging operation. 4. The process according to claim 1 wherein the diene elastomer latex (A) is a natural rubber latex. 5. The process according to claim 4 , wherein the diene elastomer latex (A) is a concentrated natural rubber latex. 6. The process according to claim 1 , wherein the filler coagulates spontaneously with the said diene elastomer latex or latexes (A). 7. The process according to claim 6 , wherein the filler is carbon black. 8. The process according to claim 6 , wherein the filler is hydrophobized silica. 9. The process according to claim 1 , wherein the surfactant is an anionic surfactant. 10. The process according to claim 9 , wherein the surfactant is sodium dodecyl sulphate. 11. The process according to claim 1 , wherein the concentration of surfactant in the aqueous dispersion (B) is strictly greater than 0.01% by weight, with respect to the total weight of the aqueous dispersion (B).
Assignees
Inventors
Classifications
Coagulation · CPC title
Latex (C08J2409/04, C08J2409/08 take precedence) · CPC title
Silica · CPC title
- B60C1/0016Primary
Compositions of the tread · CPC title
Copolymers with acrylonitrile · CPC title
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- What does patent US9512281B2 cover?
- The invention relates to a process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomer latexes and on one or more fillers, comprising the following successive stages: preparation of a stable and homogeneous aqueous dispersion by mixing one or more diene elastomer latexes with one or more stable aqueous dispersions of one or more fillers, th…
- Who is the assignee on this patent?
- Bibette Jérôme, Martinez Pedrero Fernando, De Gaudemaris Benoît, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification B60C1/0016. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 06 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).