| 摘要 |
PCT No. PCT/FR90/00755 Sec. 371 Date May 18, 1992 Sec. 102(e) Date May 18, 1992 PCT Filed Oct. 18, 1990 PCT Pub. No. WO91/05767 PCT Pub. Date May 2, 1991.Said polyurethanes contain patterns of the type (Ia) or (Ib) with A=alkyl, cycloalkyl, aryl, arylalkyl or alkylaryl, or polyoxyalkylene or polyester; D=alkylene, cycloalkylene, arylene, alkylarylene or arylalkylene, and can contain at least one heteroatom; E=(i), in which case G represents the hydrocarbonated skeleton of an organic compound containing at least two alcohol functions, or (ii), in which case G represents the hydrocarbonated skeleton of an organic compound containing at least two isocyanate functions, and Pv=a polymer sequence from at least one vinyl monomer. The presence of vinyl sequences in said polyurethanes makes it possible, in particular, to improve the stability when exposed to sunlight (UV) of paints with a polyurethane base, thereby adding a sheen to said paints.
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