Process for the continuous production of indene resins
AssigneeRutgerswerke Aktiengesellschaft
InventorsHans Spengler, Gunter Bucksch, Manfred Morgenstern
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Abstract
A process for the continuous production of indene resins comprising the steps of continuously pre-heating an indene-containing hydrocarbon mixture, continuously adding a boron trifluoride-adduct catalyst and the pre-heated indene-containing mixture to a reaction tube, continuously isothermally reacting the indene-containing mixture with the catalyst at the temperature of the pre-heated mixture to form an indene-containing resin, continuously decomposing the catalyst, and continuously separating the indene-containing resin from the decomposed catalyst and unreacted substances.
Claims33
A continuous process for the production of an indene resin, said process comprising the following sequential steps:
- (A) preheating an indene-containing hydrocarbon fraction to a reaction temperature of about 20.degree. C. to about 180.degree. C.;
- (b) continuously feeding said preheated indene-containing hydrocarbon fraction and a boron trifluoride-containing catalyst into a reaction tube which is maintained at said reaction temperature, wherein said catalyst is in an amount between about 0.03 and about 0.4% by weight catalyst, related to the weight of said indene-containing fraction;
- and wherein said reaction tube has a length which is at least about 10.sup.3 times greater than the major cross-sectional dimension of said reaction tube;
- (C) continuously reacting said indene-containing hydrocarbon fraction and said catalyst in said reaction tube at a pressure between about 0 and about 8 atmospheres for a period of from about 3.84 min. to about 35.89 min. to form an indene resin;
- (D) contacting said mixture of said resin, catalyst and unreacted hydrocarbon fraction with steam at about 0.5 to about 6 atmospheres of pressure in order to decompose said catalyst;
- and
- (E) separating said indene resin from said decomposed catalyst and unreacted hydrocarbon fraction.
A continuous process for the production of an indene resin having a softening point between about 0.degree. C. and about 170.degree. C. KS, a brightness value of about B 0.5 to about B 2.0, and an acid number below about 0.05, said process comprising the following sequential steps:
- (A) preheating an indene-containing hydrocarbon fraction to a reaction temperature of about 20.degree. C. to about 180.degree. C.;
- (b) continuously feeding about 1.5 to about 10 m.sup.3 /hr of said preheated indene-containing hydrocarbon fraction and a boron trifluoride-adduct catalyst into a reaction tube which is maintained at said reaction temperature;
- wherein said catalyst is in an amount between about 0.03 and about 0.4% by weight catalyst, related to the weight of said indene-containing fraction;
- and wherein said reaction tube has a length which is at least about 10.sup.3 times greater than the major cross-sectional dimension of said reaction tube;
- (C) continuously reacting said indene-containing hydrocarbon fraction and said catalyst in said reaction tube at a pressure between about 0 and about 8 atmospheres for a period of from about 3.84 min. to 35.89 min. to about form an indene resin;
- (D) contacting said mixture of said resin, catalyst and unreacted hydrocarbon fraction with steam at about 0.5 to about 6 atmospheres of pressure for a period of time sufficient to decompose said catalyst;
- and
- (E) separating said indene resin from said decomposed catalyst and unreacted hydrocarbon fraction.
A continuous process for the production of an indene resin, said process comprising the following sequential steps:
- (A) preheating an indene-containing hydrocarbon fraction to a reaction temperature of about 20.degree. C. to about 180.degree. C.;
- (b) continuously feeding about 1.5 to about 10.sup.3 /hr of said preheated indene-containing hydrocarbon fraction and a boron trifluoride-containing catalyst into a reaction tube which is maintained at said reaction temperature;
- wherein said catalyst is in an amount between about 0.03 and about 0.4% by weight catalyst, related to the weight of said indene-containing fraction;
- and wherein said reaction tube has a length which is at least about 10.sup.3 times greater than the major cross-sectional dimension of said reaction tube;
- (C) continuously reacting said indene-containing hydrocarbon fraction and said catalyst in said reaction tube at a pressure between about 0 and about 8 atmospheres for a period of from about 3.84 min. to about 35.89 min. to form an indene resin;
- (D) contacting said mixture of said resin, catalyst and unreacted hydrocarbon fraction with steam at about 0.5 to about 6 atmospheres of pressure in order to decompose said catalyst;
- and
- (E) separating said indene resin from said decomposed catalyst and unreacted hydrocarbon fraction.
Dependencies are inferred from the claim text.