Patent US4722085A successfully refreshed from Google Patents.
Patent US4173693A successfully refreshed from Google Patents.
US4173693A
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Polymer-supported poly(alkyleneglycol ethers)
Assignee: Dow Chemical Co
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Filing: 1978-01-12
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Granted: 1979-11-06
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Expires: 1998-01-12
Abstract
Abstract The title compounds are of the formula P --O--R-- n R') m wherein: P is a polymer matrix of sufficient structure and molecular weight so as to be substantially water- and hydrocarbon-insoluble; R is --CH 2 CH 2 O--, --CH 2 CH 2 CH 2 O--, ##STR1## --CH 2 CH 2 CH 2 CH 2 O- or a combination thereof; R' is hydrogen, hydrocarbyl or inertly-substituted hydrocarbyl; n is an integer of 3 to about 40; and m is a real number such that the weight percent of --O--R-- n R') groups is at least about 1 percent of the total weight of the compound. A representative example of these compounds is the reaction product of a poly(ethyleneglycol ether) having a weight average molecular weight of about 300 and a chloromethylated polystyrene resin. These polymer-supported poly (alkyleneglycol ethers) are useful phase-transfer catalysts for a wide variety of reactions, such as alkylation, displacement and carbene formation.
Inventors
- 👤 Andrew T. Au
- 👤 Harold H. Freedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:39
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/068; C; C08; C08G; C08G81/00; B01J2231/00; B01J2231/40; B01J2531/00; B01J2531/90; B01J2531/98; B01J2531/985
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
102 words
A compound of the formula P --O--R--.sub.n R').sub.m wherein: P is a polymer matrix of sufficient structure and molecular weight so as to be substantially water- and hydrocarbon-insoluble; R is --CH 2 CH 2 O--, --CH 2 CH 2 CH 2 O--, ##STR6## --CH 2 CH 2 CH 2 CH 2 O-- or a combination thereof; R' is hydrogen, hydrocarbyl or an inertly-substituted hydrocarbyl; n is an integer of 3 to about 40; and m is a real number such that the weight percent of --O--R-- n R') groups is at least about 1 percent of the total weight of the compound.
Claim 2
Dependent Claim
102 words
A compound of the formula P --O--R--.sub.n R').sub.m wherein: P is a polymer matrix of sufficient structure and molecular weight so as to be substantially water- and hydrocarbon-insoluble; R is --CH 2 CH 2 O--, --CH 2 CH 2 CH 2 O--, ##STR6## --CH 2 CH 2 CH 2 CH 2 O-- or a combination thereof; R' is hydrogen, hydrocarbyl or an inertly-substituted hydrocarbyl; n is an integer of 3 to about 40; and m is a real number such that the weight percent of --O--R-- n R') groups is at least about 1 percent of the total weight of the compound.
Claim 3
Dependent Claim
17 words
The compound of claim 1 wherein R' is a hydrocarbyl of 1 to about 30 carbon atoms.
Claim 4
Dependent Claim
22 words
The compound of claim 1 wherein R is --CH 2 CH 2 O--, ##STR7## or --CH 2 CH 2 CH 2 O--.
Claim 5
Dependent Claim
35 words
The compound of claim 1 wherein m is a real number such that the weight percent of --O--R-- n R') groups is at least about 10 weight percent of the total weight of the compound.
Claim 6
Dependent Claim
13 words
The compound of claim 1 wherein R is --CH 2 CH 2 O--.
Claim 7
Dependent Claim
11 words
The compound of claim 5 wherein n is at least 6.
Claim 8
Dependent Claim
17 words
The compound of claim 6 wherein R' is a hydrocarbyl of 1 to about 15 carbon atoms.
Claim 9
Dependent Claim
20 words
The compound of claim 7 wherein P is a cross-linked matrix of polystyrene, styrene-divinylbenzene, styrene-glycoldimethacrylate, urea-formaldehyde, aryl/polyamine-formaldehyde, phenol-formaldehyde or polyacrylate.
Claim 10
Dependent Claim
88 words
A compound of the formula P --O--R--.sub.n R').sub.m wherein: P is a cross-linked polystyrene matrix; R is --CH 2 CH 2 O--, --CH 2 CH 2 CH 2 O--, --CH 2 CH 2 CH 2 CH 2 O-- or a combination thereof; R' is hydrogen, hydrocarbyl or an inertly-substituted hydrocarbyl; n is an integer of 3 to about 40; and m is a real number such that the weight percent of --O--R-- n R') groups is at least about 1 percent of the total weight of the compound.
Claim 11
Dependent Claim
88 words
A compound of the formula P --O--R--.sub.n R').sub.m wherein: P is a cross-linked polystyrene matrix; R is --CH 2 CH 2 O--, --CH 2 CH 2 CH 2 O--, --CH 2 CH 2 CH 2 CH 2 O-- or a combination thereof; R' is hydrogen, hydrocarbyl or an inertly-substituted hydrocarbyl; n is an integer of 3 to about 40; and m is a real number such that the weight percent of --O--R-- n R') groups is at least about 1 percent of the total weight of the compound.
Claim 12
Dependent Claim
35 words
The compound of claim 9 wherein m is a real number such that the weight percent of --O--R-- n R') groups is at least about 20 weight percent of the total weight of the polymer.
Claim 13
Dependent Claim
9 words
The compound of claim 10 wherein R' is methyl.
Claim 14
Dependent Claim
9 words
The compound of claim 10 wherein R' is tridecyl.
Claim 15
Dependent Claim
9 words
The compound of claim 10 wherein R' is phenyl.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |