US4016346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic polymerization process
Assignee: Kraton Chemical LLC
•
Filing: 1976-02-03
•
Granted: 1977-04-05
•
Expires: 1996-02-03
Abstract
Abstract There is provided a process for cationically polymerizing or co-polymerizing batchwise or continuously alpha -pinene by adding alpha -pinene either alone or in admixture with other terpene monomers, incrementally to a catalyst system comprising an aluminum halide and an antimony halide in the presence or absence of a (lower)alkyl, alkenyl or aralkyl halide in an inert solvent while controlling the temperature of reaction in the range of -30 DEG C. to +30 DEG C., drowning the polymerization mixture in water, separating the organic phase therefrom, removing the solvent therefrom and recovering a solid polymer in good yield.
Inventors
- 👤 Ronald Thomas Wojcik
- 👤 Erwin Richard Ruckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:17
CPC Classifications
C; C08; C08F; C08F32/00; C08F32/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
118 words
A process for polymerizing α-pinene monomer or a mixture of at least 50% α-pinene and other terpene monomers which comprises the steps of: establishing a catalyst system comprising (1) a minor amount of an antimony halide, (2) a major amount of aluminum chloride or aluminum bromide or mixtures of the latter in an inert solvent, adding thereto at a temperature between about minus 30° C and about plus 30° C α-pinene monomer or a mixture of at least 50% α-pinene and other terpene monomers incrementally with agitation, adjusting and maintaining the temperature of the mixture at about minus 30° C to about plus 30° C for from about one to about 4 hours to obtain an α-pinene polymer.
Claim 2
Dependent Claim
118 words
A process for polymerizing α-pinene monomer or a mixture of at least 50% α-pinene and other terpene monomers which comprises the steps of: establishing a catalyst system comprising (1) a minor amount of an antimony halide, (2) a major amount of aluminum chloride or aluminum bromide or mixtures of the latter in an inert solvent, adding thereto at a temperature between about minus 30° C and about plus 30° C α-pinene monomer or a mixture of at least 50% α-pinene and other terpene monomers incrementally with agitation, adjusting and maintaining the temperature of the mixture at about minus 30° C to about plus 30° C for from about one to about 4 hours to obtain an α-pinene polymer.
Claim 3
Dependent Claim
144 words
A process for polymerizing α-pinene monomer or a mixture of at least 50% α-pinene and other terpene monomers which comprises the steps of: establishing a catalyst system comprising (1) a minor amount of an antimony halide, (2) a major amount of aluminum chloride or aluminum bromide or mixtures of the two in an inert solvent, adding thereto at a temperature between about minus 30° C and about plus 30° C α-pinene monomer or a mixture of at least 50% α-pinene and terpene monomers incrementally with agitation, adjusting and maintaining the temperature of the mixture at about minus 30° C to about plus 30° C for from about 1 to about 4 hours, quenching the latter mixture with an aqueous solution to obtain an α-pinene resin-solvent solution, filtering any insolubles therein, separating resultant aqueous phase from the α-pinene-resinsolvent solution, and recovering a solid polymer therefrom.
Claim 4
Dependent Claim
144 words
A process for polymerizing α-pinene monomer or a mixture of at least 50% α-pinene and other terpene monomers which comprises the steps of: establishing a catalyst system comprising (1) a minor amount of an antimony halide, (2) a major amount of aluminum chloride or aluminum bromide or mixtures of the two in an inert solvent, adding thereto at a temperature between about minus 30° C and about plus 30° C α-pinene monomer or a mixture of at least 50% α-pinene and terpene monomers incrementally with agitation, adjusting and maintaining the temperature of the mixture at about minus 30° C to about plus 30° C for from about 1 to about 4 hours, quenching the latter mixture with an aqueous solution to obtain an α-pinene resin-solvent solution, filtering any insolubles therein, separating resultant aqueous phase from the α-pinene-resinsolvent solution, and recovering a solid polymer therefrom.
Claim 5
Dependent Claim
25 words
The process according to claim 1 wherein the inert solvent and α-pinene monomer in admixture contains from about 100 ppm to about 400 ppm water.
Claim 6
Dependent Claim
36 words
The process according to claim 1 wherein the catalyst system comprises aluminum chloride, antimony chloride and small amounts of an adjuvant selected from the group consisting of lower alkyl halide, lower alkylene halide and aralkyl halide.
Claim 7
Dependent Claim
51 words
The process according to claim 2 wherein the catalyst system comprises from about 70% to about 85% aluminum chloride and from about 30% to 10% of an antimony halide, and wherein the overall amount of catalyst used ranges between about 2% and 12%, of said monomer, said percentages being by weight.
Claim 8
Dependent Claim
28 words
The process according to claim 5 wherein the antimony halide is antimony trichloride ranging from about 0.7% to 0.9% of the antimony component, based on α-pinene monomer mix.
Claim 9
Dependent Claim
13 words
The process according to claim 5 wherein the process is carried out batchwise.
Claim 10
Dependent Claim
13 words
The process according to claim 5 wherein the process is carried out continuously.
Claim 11
Dependent Claim
12 words
The process according to claim 4 wherein the adjuvant is t-butyl chloride.
Claim 12
Dependent Claim
12 words
The process according to claim 4 wherein the adjuvant is allyl chloride.
References Cited (Backward Citations)
US2734047A
Cited
US1720929A
Cited
US2932631A
Cited
US3297673A
Cited
US3478005A
Cited
US3470145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |