C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/60 (2006.01) C08G 63/78 (2006.01) C08L 67/04 (2006.01)
Patent
CA 2739028
A polyester contain-ing polymerized units of hydro-quinone; 4,4'-biphenol; and hydrox-ybenzoic acid; terephthalic acid and optionally isophthalic acid. A method of forming a polyester in-cluding first acylating a mixture of hydroquinone; 4,4'-biphenol; tereph-thalic acid and optionally isophthalic acid; and hydroxybenzoic acid; and then polycondensing the resulting acylated mixture. The polyester is suitable for uses such as lighting where high whiteness, high reflectiv-ity and high heat resistance are desir-able.
L'invention porte sur un polyester contenant des unités polymérisées d'hydroquinone; de 4,4'-bisphénol; et d'acide hydroxybenzoïque; d'acide téréphtalique et, facultativement, d'acide isophtalique. L'invention porte également sur un procédé de formation d'un polyester comprenant d'abord l'acylation d'un mélange d'hydroquinone; de 4,4'-bisphénol; d'acide téréphtalique et, facultativement, d'acide isophtalique; et d'acide hydroxybenzoïque; puis la polycondensation du mélange acylé ainsi obtenu. Le polyester est approprié pour des utilisations telles que l'éclairage où une grande blancheur, une réflectivité élevée et une résistance à la chaleur élevée sont souhaitables.
Bertucci Maria G.
Crowe Christie W.
Cupta Glenn W.
Nel Jan G.
Singletary Nancy J.
Robic
Solvay Advanced Polymers L.l.c.
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