Examples of 'vinyl content' in a sentence
Meaning of "vinyl content"
Vinyl content: Refers to the material or substance present in vinyl, such as the composition of chemicals or components that make up vinyl products
How to use "vinyl content" in a sentence
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vinyl content
Higher alkenyl or vinyl content provides more efficient crosslinking.
The butadiene used herein must produce a polymer block with a low vinyl content.
Higher vinyl content provides more efficient radiation induced crosslinking.
The modifier was also helpful to raise the vinyl content of the polymer formed.
Its vinyl content gives it good tensile strength and some grades are flexible.
The butadiene used herein must produce a polymer block with a high vinyl content.
The lower limit of the vinyl content of the isoprene rubber is not particularly limited.
For example copolymers of isoprene and butadiene with a high vinyl content can be prepared.
If polymers with a high vinyl content are desired, larger quantities of modifier will be used.
In order to guarantee a minimum level of crosslinking a vinyl content of 3 % is however required.
A high vinyl content in the carboxylate terminated conjugated diene homo - or co-polymers can be desired.
In one embodiment, the polydiene block is characterized by a relatively high vinyl content.
Accordingly, the vinyl content is not extremely critical and may vary within wide limits.
For some applications, however, it may be desired to achieve a higher vinyl content.
This indicates that high vinyl content structure in the polymer decreases the hot-melt viscosity.
See also
If desired the product may be partially hydrogenated to adjust residual unsaturation, especially vinyl content.
The term " distribution width " refers to a change of vinyl content along one molecular chain.
Vinyl content of conjugated diolefin portions IR spectroscopy ( Morelo method ) was used.
The number average molecular weight and vinyl content of the samples were measured by 13C NMR.
The vinyl content of the high vinyl block was then calculated to be 36 %.
Preferred copolymers are styrene-butadiene copolymers having a vinyl content of at least 30 percent.
The total vinyl content of the block copolymer is at least 25 % by weight.
The unhydrogenated polymer possessed a 55 % vinyl content from the butadiene portion.
The vinyl content of the butadiene portion formed in the second step was 43 wt %.
The process of claim 5 wherein the polybutadiene diol has a vinyl content of at least 30 %.
The vinyl content of the SBS polymer was 40 percent.
Polymerisation of butadiene ( and / or isoprene ) must produce a polymer block with a high vinyl content.
Vinyl content is determined by 1H-NMR analysis.
Preferably, the hydrogenated styrene-butadiene block copolymer described above has a vinyl content of less than 45 %.
The vinyl content of segment B2 is calculated using the following method,.
Each of the polymers of Example 1 was shown to have a vinyl content of approximately 50 %.
Vinyl content in the conjugated diolefin part, Determined by IR absorption spectrum ( Morello method ).
This corresponds to a vinyl content of 40 % prior to hydrogenation.
The vinyl content originates from 1,2 polymerisation rather than 1,4 polymerisation of butadiene.
Its ' butadiene portion may have a vinyl content in a range of 10 to 50 percent.
The vinyl content is measured by infrared spectroscopy described generically in ASTM D 3677.
In a more preferred embodiment the vinyl content ranges from 20 to 80 percent by weight.
The vinyl content of the polydiene block prior to hydrogenation is from 70 to 85 mol percent ;.
Sealant composition according to claim 1 wherein the vinyl content is from 45 to 90 % by weight.
The overall vinyl content was measured by NMR as 48 %.
The block copolymers made in these references have a high vinyl content ( about 40 % ).
The vinyl content of the HVB block was then calculated to be 54 %.
A sample of the resultant polymer has a vinyl content as determined by 1H NMR of 49.6 percent.
Conjugated diene 1,2 - vinyl content This was calculated by the Morello method, using infrared analysis.
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