Cycloolefin copolymers

Structural formula
General
Surname	Cycloolefin copolymers
other names	Bicyclo [2.2.1] hep-2-ene polymer with ethene; Ethylene norbornene copolymer;
CAS number	26007-43-2
Brief description	colorless and odorless solid
properties
solubility	practically insoluble in water
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cycloolefin copolymers ( COC ) are a class of engineering polymers .

synthesis

Cycloolefin copolymers are obtained by metallocene- catalyzed copolymerization of cycloolefins (such as norbornene ) with alk-1-enes (such as ethene ).

properties

Although they only consist of olefins , COC are amorphous and therefore transparent, in contrast to semi-crystalline polyolefins such as polyethylene and polypropylene . The properties of COC can be changed over a wide range by changing the installation ratios of cyclic and linear olefins. This essentially sets the heat resistance in a range from 65 to 190 ° C.

All COCs have a number of properties in common, such as good thermoplastic flowability , high rigidity , strength and hardness as well as low density and high transparency with good acid and alkali resistance.

use

The low birefringence is of interest for optical applications . In the field of medicine / diagnostics, the excellent biocompatibility , especially blood compatibility, and the extremely low water absorption / water vapor permeability should be emphasized.

Commercial applications of COCs are therefore various optical functional films in flat screens as well as lenses and sensors . In medicine / diagnostics, prefilled syringes, microtiter plates , cuvettes and vials are used. COCs are also used as blister packaging and shrink or twist film .

Individual evidence

↑ ^a ^b Topas® Cyclic Olefin Copolymers
↑ ^a ^b Cyclic olefin copolymer data sheet , United States Pharmacopeia (USP) Reference Standard from Sigma-Aldrich , accessed on July 19, 2017 ( PDF ).
↑ Entry on cycloolefin copolymers. In: Römpp Online . Georg Thieme Verlag, accessed on March 27, 2015.
↑ Ju Young Shin, Jl Yong Park, Chenyang Liu, Jiasong He, Sung Chul Kim: Chemical Structure and Physical Properties of Cyclic Olefin Copolymers (IUPAC Technical Report). (PDF, 0.67 MB) In: Pure Appl. Chem. , Vol. 77, no. 05. IUPAC , 2005, pp. 801-814 , accessed on April 12, 2010 (English).
↑ patent WO2009041448 : White Film and Surface Light Sources with the Same. Applied September 25, 2008 , published April 2, 2009 , Applicants: Toray Industries Inc., Aoyama Shigeru, Kikuchi Akikazu, Takahashi Kozo, Inventors: Aoyama Shigeru, Kikuchi Akikazu, Takahashi Kozo (see section 0177). ‌

[wisc.edu-1] Topas® Cyclic Olefin Copolymers

[Sigma-2] Cyclic olefin copolymer data sheet , United States Pharmacopeia (USP) Reference Standard from Sigma-Aldrich , accessed on July 19, 2017 ( PDF ).

[roempp-3] Entry on cycloolefin copolymers. In: Römpp Online . Georg Thieme Verlag, accessed on March 27, 2015.

[4] Ju Young Shin, Jl Yong Park, Chenyang Liu, Jiasong He, Sung Chul Kim: Chemical Structure and Physical Properties of Cyclic Olefin Copolymers (IUPAC Technical Report). (PDF, 0.67 MB) In: Pure Appl. Chem. , Vol. 77, no. 05. IUPAC , 2005, pp. 801-814 , accessed on April 12, 2010 (English).

[5] tent WO2009041448 : White Film and Surface Light Sources with the Same. Applied September 25, 2008 , published April 2, 2009 , Applicants: Toray Industries Inc., Aoyama Shigeru, Kikuchi Akikazu, Takahashi Kozo, Inventors: Aoyama Shigeru, Kikuchi Akikazu, Takahashi Kozo (see section 0177). ‌