1. A clear binder comprising:
(i) from 40% to 80% by weight of a plasticizing agent consisting of an oil containing a
total content of paraffinic compounds, measured according to the ASTM D2140
method, of at least 50% by weight, preferably of greater than or equal to 60%,
(ii) from 20% to 50% by weight of structuring agent,
(iii) from 1% to 7% by weight of at least one block copolymer based on conjugated
diene units and on monovinylaromatic hydrocarbon units, for example based on
butadiene units and on styrene units,
and,
(iv) optionally from 0.05% to 0.5% by weight of adhesion agent,
by weight, with respect to the weight of clear binder.
2. The clear binder as claimed in claim 1, characterized in that the oil is a synthetic oil resulting from the cuts from a deasphalting unit (DAO oil).
3. The clear binder as claimed in claim 1 or claim 2, characterized in that the oil contains a total content of paraffinic compounds of at least 50% by weight and a total content of naphthenics of less than or equal to 25% by weight, measured according to the ASTM D2140 method.
4. The clear binder as claimed in one of the preceding claims, characterized in that the oil contains a total content of paraffinic compounds, measured according to the ASTM D2140 method, of between 50% and 90% by weight and a total content of naphthenic compounds of between 5% and 25% by weight.
5. The clear binder as claimed in one of the preceding claims, characterized in that the oil has an aniline point, measured according to the ISO 2977:1997 standard, of greater than or equal to 80°C, preferably of greater than 90°C, for example of greater than 100°C.
6. The clear binder as claimed in one of the preceding claims, characterized in that the block copolymer is a copolymer of styrene and of butadiene and that it comprises a content by weight of 1,2-vinyl groups ranging from 10% to 70%, preferably from 10% to 50% and more preferably from 10% to 40%.
7. The clear binder as claimed in one of the preceding claims, characterized in that the block copolymer of styrene and of butadiene has an average molecular weight of between 10 000 and 500 000, preferably between 50 000 and 200 000 and more preferably between 50 000 and 150 000 daltons.
8. The clear binder as claimed in one of the preceding claims, characterized in that the copolymer is a styrene/butadiene block or styrene/butadiene/styrene block copolymer.

9. The clear binder as claimed in one of the preceding claims, characterized in that it exhibits a color index of less than or equal to 4, preferably of less than or equal to 3, as determined according to the ASTM DH4 scale.
10. The clear binder as claimed in one of the preceding claims, characterized in that it exhibits a ring-and-ball softening temperature, determined according to the EN 1427 standard, of between 55°C and 90°C and a Fraass breaking point, determined according to the EN 12593 standard, of less than or equal to -5°C, preferably of less than or equal to -10°C and more preferably of less than or equal to -12°C.
11. The clear binder as claimed in one of the preceding claims, characterized in that it exhibits a dynamic viscosity, measured according to the NF EN 13702 standard, at 135°C of less than or equal to 0.5 Pa.s, preferably of less than or equal to 0.35 Pa.s.
12. The clear binder as claimed in one of the preceding claims, characterized in that it exhibits a penetrability at 25°C, measured according to the NF EN 1426 standard, of between 10 and 220 1/10 mm, preferably between 30 and 100 1/10 mm, for example between 40 and 80 1/10 mm.
13. A process for the preparation of the clear binder as claimed in one of the preceding claims, comprising:

- the mixing of the plasticizing agent, for example a DAO oil, and heating to a temperature of between 140 and 200°C, for example from 10 minutes to 30 minutes,
- the addition of the structuring agent, for example a hydrocarbon resin, mixing and heating to a temperature of between 140 and 200°C, for example from 30 minutes to 2 hours,
- the addition of the copolymer, mixing and heating to a temperature of between 140 and 200°C, for example from 90 minutes to 2 hours 30 minutes,
- the addition of the optional adhesion agent, mixing and heating between 140 and 200°C, for example between 5 minutes and 20 minutes.

14. An emulsion comprising the clear binder as claimed in one of claims 1 to 12, water and an emulsifying agent.
15. The emulsion as claimed in claim 13, in which the clear binder represents from 50% to 80% by weight, with respect to the total weight of the emulsion.
16. A mix comprising (i) the clear binder as claimed in one of claims 1 to 12 or the emulsion as claimed in either of claims 14 and 15, (ii) an aggregate and/or a mineral filler, and optionally (iii) one or more pigments.
17. The application of the clear binder as claimed in one of claims 1 to 12 or of the emulsion as claimed in either of claims 14 and 15 as a mixture with optionally aggregates and/or other mineral fillers in the preparation of mixes, intended in particular for road or urban surfacings.
18. The application of the clear binder as claimed in one of claims 1 tcyl-2 as lubricant for cableway cables.