| 摘要 |
FIELD: polymer materials. ^ SUBSTANCE: invention relates to compositions based on thermoplastic polyester resin characterized by acceptable coloration and muddiness and provides a composition and variations thereof comprising film-forming polyester and efficient amount of oxygen-absorbing particles containing at least one oxygen-absorbing element such as iron, cobalt, and nickel capable of reacting with oxygen, wherein particles are size-distributed in such a way that particles less than about 25 mum in size are present but their concentration does not exceed that determined by formula: ppm = 512.3*d wherein ppm means approximate concentration (in ppm) of particles having size less than about 25 mum and d is apparent density of particles less than about 25 mum in size from more than 2.44 to about 3.4 g/cc. There are further also described: article formed from composition based on thermoplastic polyester resin, said article having muddiness Hunter muddiness factor about 10% or less and Hunter L* variation about 0.4% or less as compared to reference sample containing no oxygen-absorbing particle; method of incorporating particles into film-forming composition based of low-muddiness thermoplastic polyester resin; and container made from thermoplastic polyester resin-based composition. ^ EFFECT: improved color characteristics of resin and products thereof. ^ 68 cl, 5 tbl, 48 ex |
