发明名称 |
Copolyester containing 4,4'-biphenyldicarboxylic acid, 1,4-cyclohexanedimethanol and an ultraviolet light absorbing compound and articles made therefrom |
摘要 |
A copolyester blend resistant to ultraviolet radiation consists essentially of a polyethylene terephthalate based copolyester having 1,4-cyclohexanedimethanol residues; an effective amount of an ultraviolet radiation absorber selected from the group consisting of benzoxazinones, dimeric benzotriazoles, triazines and mixtures thereof; and from about 2 to about 25 mole percent of 4,4'-biphenyldicarboxylic acid residues present in the copolyester wherein the mole percent is based on 100 mole percent of dicarboxylic acid or equivalents. The copolyester blend is useful in making UV radiation resistant thermoformed articles.
|
申请公布号 |
US6352783(B1) |
申请公布日期 |
2002.03.05 |
申请号 |
US19990459966 |
申请日期 |
1999.12.13 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
FAGERBURG DAVID RICHARD |
分类号 |
B32B27/36;C08G63/185;C08K5/3467;C08K5/3475;C08K5/3492;C08K5/35;C08K5/357;C08L67/02;(IPC1-7):B32B27/08;B32B27/18 |
主分类号 |
B32B27/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|