Polymer particles which carry, implanted on their surface, amphi

Details Polymer particles which carry, implanted on their surface, amphi Polymer particles which carry, implanted on their surface, amphi

1990-06-05

1992-04-28

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524217, 524376, 524556, 524567, 524568, 524571, 524804, 252 6254, C08K 900, C04B 3504

Patent

active

051090384

ABSTRACT:
Polymer particles which carry, implanted on their surface, amphiphilic molecules carrying ion-forming or reactive groups, and dispersions thereof, which may be prepared by contacting a latex of particles of a polymer having a glass transition temperature Tg greater than about 40.degree. C., with an amphophilic compound having an HLB greater than or equal to 10 and a molecular weight greater than or equal to 400. The contacting is carried out at a temperature within the glass transition zone of the polymer, until enmeshing of the polymer chains and of the hydrophobic blocks of the amphiphilic compound has been achieved. The hydrophilic block of the amphiphilic compound carries at least one ion-forming or reactive group. The particles and their dispersions are useful in biological applications.

REFERENCES:
patent: 2461920 (1949-02-01), Pratt
patent: 4157323 (1979-01-01), Yen et al.
patent: 4217344 (1980-08-01), Vanderberghe et al.
patent: 4358388 (1982-11-01), Daniel et al.

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