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US 2006/0217500 A1Published application
Copolymer containing one or more amide segments
AssigneeStiching Dutch Polymer Institute
InventorsReinoud Gaymans, Josien Krijgsman
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Abstract
Described herein are novel copolymers containing amide segments. The amide segments have an average length of at least three amide groups and at least 30% of the amide segments are uniform in length. The copolymers have a glass transition temperature of more than 120° C., a Tm-Tc value of less than 40° C., and a Tg/Tm value of more than 0.72. The invention further relates to a method for preparing such a copolymer and to a product comprising such a copolymer, such as a blend or a composite product.
Claims30
Copolymer, represented by formula I
- -(—Y-Amide-(R-Amide)n-)m- (I)
- wherein each Amide segment represents an —N(H)C(O)— or —C(O)N(H)— group,
- wherein each R is independently chosen from the group consisting of alkylene moieties, alicyclic moieties and arylene moieties,
- wherein n has a number average value of at least about 2,
- wherein m is at least 1,
- wherein at least 30% of the Amide-(R-Amide-)n segments are uniform in length,
- wherein each Y represents a stiff chain segment,
- wherein a glass transition temperature of the copolymer is above 120° C.,
- wherein a Tm-Tc value is less than 40° C., and
- wherein a Tg/Tm ratio is at least 0.72, wherein Tg and Tm are in K.
7 more elements
Dependencies are inferred from the claim text.