| 摘要 |
FIELD: polymer materials. SUBSTANCE: oil and gas production. Composition contains (i) wax polyolefin prepared from olefin with at least 3 carbon atoms and depicted be general formula R<SP>a</SP>-CH=CH-R , wherein R and R , same or different, are hydrogen or C<SB>1</SB>-C<SB>15</SB>-alkyl provided that R and R cannot be simultaneously hydrogen atoms or R and R with atoms linking them form cycle, with weighed average molecular weight M<SB>w</SB> from 1000 to 50000 g/mol, dispersion of molecular weight M<SB>w</SB>/M<SB>n</SB> 1.8 to 4.0, reduced viscosity 2 to 50 cu. cm/g, and melting point 120 to 160 C, and (ii) polyolefin prepared from above- defined olefin with molecular weight M<SB>w</SB>> 100000 g/mol, dispersion of molecular weight M<SB>w</SB>/M<SB>n</SB> 1.8 to 4.0, reduced viscosity > 80 cu.cm/g, and melting point 120 to 160 C, or, instead of (ii), olefin copolymer prepared from at least two different olefins with general formula R<SP>a</SP>-CH=CH-R , wherein R and R , same or different, are hydrogen or C<SB>1</SB>-C<SB>15</SB>-alkyl provided that R and R cannot be simultaneously hydrogen atoms or R and R with atoms linking them form cycle, with molecular weight M<SB>w</SB>> 100000 g/mol, dispersion of molecular weight M<SB>w</SB>/M<SB>n</SB> 1.8 to 4.0, reduced viscosity > 80 cu.cm/g, and melting point 90 to 160 C. EFFECT: increased rigidity and strength. 2 cl, 1 tbl, 27 ex
|
