the stability of the organic matter, 2, 2, 6, 6 for the methyl - 4 - the ferry to go to the three important compounds containing

摘要

the chemical formula (1), of the resultant organic material, especially synthetic polymer on the stability of optical stability, thermal oxidation stability, and in the use of:;(1);in the method, n is a number of 2 to 14.);for example, the basic R1 is h or alkyl, C1 - C8;;for example, R2 is C2 - C12 alkylene and;;for example, a is the radical C1 - you know, C8;;radical b is independent of each other OR3 -, - n (R4) (R5) and that of the chemical;;or the same or different R3, for example, R4 and R5 is h or alkyl and C1 - C18;;or - n (R4) (R5) is added to the chemical formula,;y is - o -, - CH2 -, - CH2CH 2 - or n - CH3.;;x is - o - or n - R6,.;for example, R6 is h or alkyl and C1 - C18;;r is welcomed, and has the chemical formula;;however, the chemical formula (1) of the individual repeat units in the base b, r, is the same or R1 and R2 or different meaning.