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OwnerFiorenzo Renzi, Willem Bos +2inventors
InventorsFiorenzo Renzi, Willem Bos, Simon Postmus, Roberto Forestieri
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A liquid composition is described, which can undergo radicalic polymerization into organic glass, comprising: 1) the product obtained from the transesterification of diallyl carbonate (A) with a blend of one or more linear or branched aliphatic diols (B), containing from three to ten carbon atoms in the molecule, with a linear or branched aliphatic polyol (C), containing from four to twenty carbon atoms and from three to six hydroxyl groups in the molecule, in an overall concentration ranging from 70 to 100% by weight with respect to the total weight of the mixture of components 1) and 2); 2) one or more comonomers of the acrylic, methacrylic, vinylic or allylic type and mixtures thereof, in an overall concentration ranging from 0 to 30% by weight with respect to the total weight of the mixture of components 1) and 2); 3) a polymerization initiator or a mixture of two or more polymerization initiators, stable at room temperature, belonging to the group of peroxides, in an overall concentration ranging from 0.03 to 0.1 moles per 1 kg of final composition
A liquid composition which can undergo radicalic polymerization into organic glass comprising the following components:
The composition according to any of the previous claims, characterized in that component 1) is obtained starting from diallyl carbonate (A) and the mixture (B+C), operating under transesterification conditions, at a temperature ranging from 80 to 160° C., in the presence of an alkaline-type catalyst, continuously eliminating the allyl alcohol which is formed as reaction by-product.
The composition according to any of the previous claims from 8 to 10, characterized in that the catalyst is used in an amount at least equal to 1 ppm (parts per million by weight) with respect to the sum of the weights of components (B+C).
The composition according to any of the previous claims from 8 to 12, characterized in that the transesterification reaction is carried out at pressure values ranging from 60 mbar to 1030 mbar and for reaction times of between 0.5 and 20 hours.
The composition according to any of the previous claims, characterized in that it contains one or more conventional additives, such as antioxidants, light stabilizers, lubricants, dyes, pigments, UV-absorbers, IR-absorbers, and similar, in a total amount in any case not higher than 1 part by weight for every 100 parts by weight of the compositions.
The composition according to any of the previous claims, characterized in that it is transformed into the relevant organic glass by operating at a temperature ranging from 30 to 120° C., with polymerization times varying from 1 hour to 100 hours.
Organic glass obtainable by the polymerization of a composition according to any of the previous claims.
Dependencies are inferred from the claim text.