Claims
- 1. A process for the production of a fire resistive primary plasticizer containing 15-70% by weight chlorine and 1-8% by weight sulphur comprising subjecting a cut of substantially straight chain paraffins containing from 10 to 18 carbon atoms in succession of separate reactions consisting of a sulfochlorination reaction in which the paraffins are reacted with sulphur dioxide and chlorine in the ratio of 1 mol Cl.sub.2 per 1-5 mols SO.sub.2, a chlorination reaction in which the product of the reaction of the sulfochlorination step is reacted with chlorine, and a condensation reaction in which the product of the chlorination step is condensed in the presence of a basic reagent with a phenolic compound selected from the group consisting of phenol and substituted phenols wherein the substituent is halogen, alkyl, alkoxy, aryl or carboxylato, with the basic reagent present in the mol ratio of 1-1.5 mols basic reagent per mol of phenolic compound.
- 2. A process as claimed in claim 1 in which the successive operations of sulphochlorination, chlorination and condensation are carried out without isolating the intermediate products formed by each operation.
- 3. A process as claimed in claim 1 in which the sulphochlorination, chlorination and condensation operations are carried out discontinuously in succession in one and the same apparatus.
- 4. A process as claimed in claim 1 in which the sulphochlorination, chlorination and condensation operations are carried out continuously.
- 5. A process as claimed in claim 1 in which the molar ratio of chlorine and sulphur dioxide is within the range of 1 to 1.8.
- 6. A process as claimed in claim 1 in which both the sulphochlorination and the chlorination operations are carried out under irradiation.
- 7. A process as claimed in claim 1 in which sulphochlorination and chlorination operations are carried out in the presence of a free radical generating catalyst.
- 8. A process as claimed in claim 1 in which one of the two operations of sulphochlorination and chlorination is carried out under irradiation and the other operation is carried out in the presence of a free radical generating catalyst.
- 9. A process as claimed in claim 7 in which the free radical generating catalyst is a peroxide.
- 10. A process as claimed in claim 9 in which the quantity of peroxide used is within the range of 0.005 to 1% with respect to the weight of paraffin used.
- 11. A process as claimed in claim 10 in which the peroxide is introduced in a number of fractions during the course of the operation in which it is used.
Priority Claims (1)
Number |
Date |
Country |
Kind |
71.21052 |
Jun 1971 |
FR |
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Parent Case Info
This is a continuation of application Ser. No. 258,491, filed June 1, 1972 now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (2)
Number |
Date |
Country |
928,548 |
Jun 1963 |
UK |
516,214 |
Dec 1939 |
UK |
Non-Patent Literature Citations (1)
Entry |
Horst, "Modern Plastics," vol. 24, No. 7 (1947), pp. 154, 155, 156, 192 and 194. |
Continuations (1)
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Number |
Date |
Country |
Parent |
258491 |
Jun 1972 |
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