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Strona 150
In this way , a range of materials suitable for various technical applications may
be prepared . Various degrees of benzylation ... useful range of solubility
contains approximately two benzyl groups per C . H . , 0 , . Benzylation is a
progressive ...
In this way , a range of materials suitable for various technical applications may
be prepared . Various degrees of benzylation ... useful range of solubility
contains approximately two benzyl groups per C . H . , 0 , . Benzylation is a
progressive ...
Strona 151
These moulding materials are produced in a wide range of light colours . These
colours do not darken on exposure . Unlike nitrocellulose , benzyl cellulose is
unaffected by sunlight . Clear films made from it do not discolour on prolonged ...
These moulding materials are produced in a wide range of light colours . These
colours do not darken on exposure . Unlike nitrocellulose , benzyl cellulose is
unaffected by sunlight . Clear films made from it do not discolour on prolonged ...
Strona 155
The range of useful and essential products from plants is no less astonishing and
varied . It includes a whole host of fibres , the dyes to colour them , oils , gums ,
rubber , food products , all kinds of beverages and liquors and condiments as ...
The range of useful and essential products from plants is no less astonishing and
varied . It includes a whole host of fibres , the dyes to colour them , oils , gums ,
rubber , food products , all kinds of beverages and liquors and condiments as ...
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