US3919181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hydrocarbon resins using zirconium tetrachloride
Assignee: SI Group Inc
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Filing: 1973-10-11
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Granted: 1975-11-11
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Expires: 1993-10-11
Abstract
Abstract Styrene is homopolymerized or copolymerized with alpha methyl styrene, preferably in the presence of limonene, with or without t-butyl styrene, using zirconium tetrachloride as the catalyst. The light colored resins formed are useful as drying cleaning sizing agents and in hot melt adhesives.
Inventors
- 👤 Kenneth C Petersen
- 👤 Jr Royal A Meader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:49
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/16; C08F12/00; C08F12/02; C08F12/04; C08F12/06
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
113 words
A PROCESS OF PREPARING A LIHT COLORED AROMATIC VINYL RESIN COMPRISING POLYMERIZING A MEMBER OF THE GROUP CONSISTING OF (1) AS THE SOLE MONOMER STYRENE, ALPHA-METHYL STYRENE, ALPHA-PINENE, BATA-PINENE, DIPENTENE LIMONENE OR P-T-BUTYL STYRENE, (2) A MIXTURE OF (A) STYRENE AND (B) ALPHA-METHYL STYRENE, OR (3) A MIXTURE OF (A) STYRENE, (B) ALPHA-METHYL STYRENE AND (C) AS A THIRD MONOMER A MEMBER OF THE GROUP CONSISTING OF ALPHA-PINENE, DIPENTENE, DIPENTENE LIMONENE, P-BUTYL STYRENE AND VINYL TOLUENE, OR (4) A MIXTURE OF (A) STYRENE, (B) ALPHA-METHYL STYRENE, (C) POLYMERIZABLE TERPENE SELECTED FROM THE GROUP CONSISTING OF ALPHA-PINENE, BETAPINENE, DIPENTENE AND LIMONENE AND (D) P-T-BUTYL STYRENE, IN THE PRESENCE OF ZIROCONIUM TETRACHLORIDE AS A ATALYST.
Claim 2
Dependent Claim
113 words
A PROCESS OF PREPARING A LIHT COLORED AROMATIC VINYL RESIN COMPRISING POLYMERIZING A MEMBER OF THE GROUP CONSISTING OF (1) AS THE SOLE MONOMER STYRENE, ALPHA-METHYL STYRENE, ALPHA-PINENE, BATA-PINENE, DIPENTENE LIMONENE OR P-T-BUTYL STYRENE, (2) A MIXTURE OF (A) STYRENE AND (B) ALPHA-METHYL STYRENE, OR (3) A MIXTURE OF (A) STYRENE, (B) ALPHA-METHYL STYRENE AND (C) AS A THIRD MONOMER A MEMBER OF THE GROUP CONSISTING OF ALPHA-PINENE, DIPENTENE, DIPENTENE LIMONENE, P-BUTYL STYRENE AND VINYL TOLUENE, OR (4) A MIXTURE OF (A) STYRENE, (B) ALPHA-METHYL STYRENE, (C) POLYMERIZABLE TERPENE SELECTED FROM THE GROUP CONSISTING OF ALPHA-PINENE, BETAPINENE, DIPENTENE AND LIMONENE AND (D) P-T-BUTYL STYRENE, IN THE PRESENCE OF ZIROCONIUM TETRACHLORIDE AS A ATALYST.
Claim 3
Dependent Claim
9 words
The product prepared by the process of claim 1.
Claim 4
Dependent Claim
25 words
A process according to claim 1 wherein the catalyst consists essentially of zirconium tetrachloride in an amount of 0.1 to 8% of the total monomers.
Claim 5
Dependent Claim
20 words
A process according to claim 3 wherein there is employed 10 to 40% styrene and 90 to 60% alpha-methyl styrene.
Claim 6
Dependent Claim
9 words
The product prepared by the process of claim 4.
Claim 7
Dependent Claim
16 words
A process according to claim 4 wherein there is employed 25% styrene and 75% alpha-methyl styrene.
Claim 8
Dependent Claim
9 words
The product prepared by the proCess of claim 6.
Claim 9
Dependent Claim
22 words
A process according to claim 6 wherein the zirconium tetrachloride is used in an amount of 2% based on the total monomers.
Claim 10
Dependent Claim
36 words
A process according to claim 3 wherein there is employed 5 to 50% styrene, 5 to 80% alpha-methyl styrene and 5 to 50% of said third monomer, alpha-pinene, beta-pinene, dipentene, limonene, p-t-butyl styrene, or vinyl toluene.
Claim 11
Dependent Claim
9 words
The product prepared by the process of claim 9.
Claim 12
Dependent Claim
16 words
A process according to claim 9 wherein said third monomer is alpha-pinene, beta-pinene, dipentene or limonene.
Claim 13
Dependent Claim
12 words
A process according to claim 11 wherein said third monomer is d-limonene.
Claim 14
Dependent Claim
9 words
The product prepared by the process of claim 12.
Claim 15
Dependent Claim
27 words
A process according to claim 12 wherein there is employed 33 1/3 to 38% d-limonene, 33 1/3 to 38 alpha-methyl styrene and 33 1/3 to 24% styrene.
Claim 16
Dependent Claim
9 words
The product prepared by the process of claim 14.
Claim 17
Dependent Claim
19 words
A process according to claim 14 wherein there is employed 2% of zirconium tetrachloride based on the total monomers.
Claim 18
Dependent Claim
18 words
A process according to claim 14 wherein there is employed equal parts of d-limonene, alpha-methyl styrene and styrene.
Claim 19
Dependent Claim
9 words
The product prepared by the process of claim 17.
Claim 20
Dependent Claim
19 words
A process according to claim 17 wherein there is employed 2% of zirconium tetrachloride based on the total monomers.
Claim 21
Dependent Claim
12 words
A process according to claim 3 carried out in a hydrocarbon solvent.
Claim 22
Dependent Claim
21 words
A process according to claim 20 wherein the monomers are dissolved in the solvent and then the zirconium tetrachloride is added.
Claim 23
Dependent Claim
37 words
A process according to claim 3 wherein there is polymerized a mixture of (a) styrene, (b) alpha-methyl styrene, (c) a polymerizable terpene selected from the group consisting of alpha-pinene, beta-pinene, dipentene and limonene, and (d) p-t-butyl styrene.
Claim 24
Dependent Claim
9 words
The product prepared by the process of claim 22.
Claim 25
Dependent Claim
14 words
A process according to claim 3 wherein there is polymerized styrene or alpha-methyl styrene.
Claim 26
Dependent Claim
9 words
The product prepared by the process of claim 24.
Claim 27
Dependent Claim
14 words
A process according to claim 24 wherein there is prepared a homopolymer of styrene.
Claim 28
Dependent Claim
15 words
A process according to claim 24 wherein there is prepared a homopolymer of t-butyl styrene.
Claim 29
Dependent Claim
19 words
A process according to claim 1 wherein the polymerization is carried out at a temperature of 20* to 55*C.
Claim 30
Dependent Claim
15 words
A process according to claim 28 which is carried out in a aromatic hydrocarbon solvent.
Claim 31
Dependent Claim
21 words
A process according to claim 28 which is carried out in xylene, benzene, toluene, heptane or mineral spirits as a solvent.
Claim 32
Dependent Claim
17 words
A process according to claim 1 wherein the polymerization is carried out in an aromatic hydrocarbon solvent.
Claim 33
Dependent Claim
23 words
A process according to claim 1 wherein the polymerization is carried out in xylene, benzene, toluene, heptane or mineral spirits as a solvent.
Claim 34
Dependent Claim
56 words
A process according to claim 1 wherein the catalyst consists essentially of zirconium tetrachloride in an amount of 0.1 to 8% of the total monomers, and there is polymerized a mixture of (a) styrene, (b) alpha-methyl styrene, (c) a polymerizable terpene selected from the group consisting of alpha-pinene, beta-pinene, dipentene and limonene and (d) p-t-butyl styrene.
Claim 35
Dependent Claim
11 words
A process according to claim 33 wherein the terpene is limonene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |