Thermosensitive polymers and thermoreversible gels obtained...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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C525S09200D, C525S111000, C525S123000, C525S124000

Reexamination Certificate

active

11010929

ABSTRACT:
Polymers which comprise polymer chains of terpolymer type which are constituted by poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) of PEO-PPO-PEO form, which are modified at their termini by groups which can essentially be other chains of PEO-PPO-PEO, acid segments, amine groups or PEOs, these chains being linked to the terpolymer chains via chemical bridges which are constituted by urethane bridges, urea bridges, allophanate bridges and biuret bridges, and which comprise more than 80% by weight of said PEO-PPO-PEO.Thermoreversible physical gels of high viscosification index, which contain these polymers, and their uses.Preparation of these polymers and of these gels.

REFERENCES:
patent: 4611083 (1986-09-01), Buethe et al.
patent: 5120816 (1992-06-01), Gould et al.
patent: 5183876 (1993-02-01), Kopp et al.
patent: 5694806 (1997-12-01), Martin et al.
patent: 0963796 (1999-12-01), None
patent: 2276627 (1994-10-01), None
patent: WO 95/26993 (1995-10-01), None
patent: WO 9526993 (1995-10-01), None
patent: WO 99/47072 (1999-09-01), None
patent: WO 9947072 (1999-09-01), None
Odian, G. “Principles of Polymerization, 3rd edition” John Wiley & Sons, INC.: New York, 1991, pp. 56-59, 66-68, 136-138, and 148-149.

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