Regio-regular functionalized polymeric packaging material
A packaging material and functionalization technology, applied in the field of coatings and products, films, packaging materials and packaging products, can solve the problems of fragile and heavy packaging products
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[0103] Molecular weights of the polymers reported below were determined by GPC at 50°C using a Waters Alliance System #4 Gel Permeation Chromatograph equipped with a Water 41-RI detector. A Phenogel 5 column (2 wires and 1 x 100 Å) was used. The eluent was 1-methyl-2-pyrrolidone / 50 mM lithium bromide. Calibration was performed with narrow molecular weight polystyrene standards.
[0104] Polymer melt flow rate is reported as MFI (melt flow index) in grams per 10 minutes. MFI is measured at 190°C with a 2.16kg weight, in accordance with ASTM D1238, using a CSI MFI-2 melt flow indexer.
[0105] The oxygen transport rate (OTR) of the pressed film samples was measured using a Mocon Ox-Tran 2 / 20ML model in accordance with ASTM D3985-81. The polymer powder was blended with a stabilizer and compression molded into a film (25.4-152.4 microns thick) at 190° C. for 5 min. A pressure of 6800 kg was applied and the sample was subsequently cooled to ambient temperature at a rate of abou...
example 1
[0108] Linear 4-cyclooctene-1-ol homopolymer and
[0109] Synthesis of Saturated Derivatives
[0110] (monomer / catalyst molar ratio is 400)
[0111] Reactions were performed in a 2 L resin kettle equipped with an overhead stirrer, thermocouple, argon inlet and two septum inlets for catalyst and solvent addition. 450 g (3.5 mol) of 1-hydroxycyclooct-4-ene were added to the resin kettle. The monomer was degassed in a high vacuum for at least 30 minutes, and 7.25 g (0.0088 moles) of phenylmethylene dichloride bis(tricyclohexylphosphine) ruthenium catalyst was weighed and added to a transparent dry half-pint bottle in a drying oven. The bottle was capped with a septum before being removed from the dry box. The molecular weight of the polymer was controlled by a monomer / ruthenium molar ratio of 750. Dichloromethane (1.5 L) was degassed with argon. 100g of dichloromethane was added to the catalyst in the bottle via a syringe, ...
example 2
[0114] Synthesis of Linear 5-Cyclooctene-trans-1,2-diol Homopolymer and Its Saturated Derivatives
[0115] 5-Cyclooctene-trans-1,2-diol (Mw=142.19, 40 g, 0.28 mol) was charged into a 100 ml three neck resin kettle equipped with a mechanical stirrer, argon inlet and septum. The monomer was degassed under vacuum for 2 hrs. The system was maintained under an argon atmosphere. In an argon drying oven, weigh the dichlorophenylmethylenebis(tricyclohexylphosphine)rhodium catalyst (0.3087g, 0.375mmol), add it to a small glass bottle with a septum cap, and dissolve it in 10ml dichloride in methyl chloride. The crimson catalyst solution was injected into the reaction kettle using a syringe. Dichloromethane (30ml) was purged with a vigorous stream of argon for 15min and then injected into the resin kettle. The monomer / solvent solution was stirred vigorously. The reaction mixture was heated to 40° C. with an oil bath, while argon was slowly blown in to create an argon atmosphere, and...
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