Polymer modified along the chain and process for the synthesis thereof

• US 10,435,485 B2
• Filed: 07/09/2015
• Issued: 10/08/2019
• Est. Priority Date: 07/21/2014
• Status: Active Grant

• Current Assignee: Compagnie générale des établissements Michelin
• Original Assignee: Compagnie générale des établissements Michelin
• Inventors: Fleury, Etienne, Thuilliez, Julien, Favrot, Jean-Michel
• Primary Examiner(s): Listvoyb, Gregory
• Application Number:
  US15/327,123
• Publication Number:
  US 20170174794A1
• Time in Patent Office: 1,552 Days
• CPC Class Codes: B60C 1/00 Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• CPC Class Codes: C08C 19/22 Incorporating nitrogen atoms into the molecule
• CPC Class Codes: C08F 8/30 Introducing nitrogen atoms or nitrogen-containing groups
• CPC Class Codes: C08K 3/04 Carbon
• CPC Class Codes: C08K 3/36 Silica

Abstract

A polymer comprises randomly distributed units UA, UB, UC and UD and at least one unit bearing a subunit F according to the respective molar percentages m, n, o, p and f

• • F pendant along the chain of the polymer and bearing an associative group comprising at least one nitrogen atom,
  • R₁ and R₂, which are identical or different, denoting a hydrogen atom, a methyl radical or a phenyl radical which is unsubstituted or substituted in the ortho, meta or para position by a methyl radical,
  • m≥50, n≥0, o≥0, f>0, 0<0+p≤25, m, n, o, p and f ranging from 0 to 100, the respective molar percentages of m, n, o, p and f calculated based on the sum of m+n+o+p+f, which is equal to 100.

Claims

1. A polymer which comprises the following units UA, UB, UC and UD and at least one unit bearing a subunit F,

2. A polymer according to claim 1, which contains the following units UF distributed randomly within the polymer,

3. A polymer according to claim 1, in which the percentages o is different from 0.

5. A polymer according to claim 1, in which at least one of the two molar percentages p and q is not equal to 0.

7. A polymer according to claim 1, in which R₁ and R₂ are identical and denote a hydrogen atom.

8. A polymer according to claim 1, in which f varies from 0.01 to 50%.

9. A polymer according to claim 1, in which the associative group is selected from the group consisting of the imidazolidinyl, triazolyl, triazinyl, bis-ureyl and ureido-pyrimidyl groups.

10. A polymer according to claim 1, in which the associative group corresponds to one of the following formulae (I) to (V):

11. A polymer according to claim 1, in which the associative group corresponds to the formula (VI):

12. A polymer according to claim 1, which is an elastomer.

13. A rubber composition which comprises a reinforcing filler and a polymer defined according to claim 12.

14. A tire which comprises a rubber composition according to claim 13.

4. A polymer which comprises the following units UA, UB, UC and UD and at least one unit bearing a subunit F,

6. A polymer which comprises the following units UA, UB, UC and UD and at least one unit bearing a subunit F,