POLYMER ANTIFRICTION COMPOSITION FOR BIOMEDICAL PURPOSES Russian patent published in 2009 - IPC C08L33/12 C08J5/16 A61L27/44 

FIELD: chemistry.

SUBSTANCE: present invention pertains to compositions, with low coefficient of friction for use in friction units of living organisms. Proposal is given of an antifriction composition, containing, as polymer binding mixture (with ratio of components in the binder): methyl methacrylate monomer (27-36 mass units), polymethyl methacrylate polymer powder (72-64 mass units), initiator - benzoyl peroxide 1 mass units (polymer binder A); or a mixture (with ratio of components in the binder): methyl methacrylate (27-36 mass units), copolymer powder (72-64 mass units) with the following content of components: methyl methacrylate - 89 mass units, ethyl methacrylate - 8 mass units, methyl methacrylate - 2 mass units, as well as initiator-benzoyl peroxide - 0.6-1.5 mass units (polymer, binder B) and ultrahigh-molecular polyethylene with 1·10⁶ - 12·10⁶ dalton molecular weight, in powder form (2-15 mass units per 85-98 mass units of polymer binder). Compared to the prototype, the value of coefficient of friction decreases by 2-4 times.

EFFECT: design of a composition, which reduces friction in the maxillotemporal joint of a polymer implant.

3 cl, 4 tbl