FIELD: lubricant materials. SUBSTANCE: invention relates to new polyfunctional viscosity modifying agents involving a mixture of derived copolymers of ethylene with alpha-olefins, A and B. The indicated copolymer A has about 30-60 wt.-% ethylene monomeric links and copolymer B has about 60-80 wt. -% ethylene monomeric links. EFFECT: improved quality of composition. 8 cl, 4 dwg, 1 tbl
| Title |
Year |
Author |
Number |
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|
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