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Patent US4234745A successfully refreshed from Google Patents.
US4234745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyols derived from 4,4,4-trichloro-1,2-epoxybutane and/or epihalohydrin for use in the production of heat sealable foams
Assignee: Bayer Corp
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Filing: 1979-01-31
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Granted: 1980-11-18
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Expires: 1999-01-31
Abstract
Abstract The instant invention is directed to a polyol having a molecular weight of 2,000 to 8,000 which is especially suited for use in the production of heat sealable foams, comprising the adduct obtained by sequentially reacting: (a) a polyhydroxyl initiator, with a functionality of 2 to 5 and a weight average molecular weight as determined by gel permeation chromatography of from 62 to 200; with (b) 10 to 90%, by weight, based on the total oxide present in (b)+(c)+(d), a first alkylene oxide; and subsequently reacting the product with (c) 10 to 80%, by weight, based on the total oxide present in (b)+(c)+(d), 4,4,4-trichloro-1,2-epoxybutane and/or epihalohydrin; and subsequently reacting the product with (d) 10 to 60%, by weight, based on the total oxide present in (b)+(c)+(d), a second alkylene oxide.
Inventors
- 👤 Barry A. Phillips
- 👤 Keith G. Spitler
- 👤 Richard E. Keegan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:03
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/223; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003; C08G18/5006; C08G18/5009; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
126 words
A polyol having a molecular weight of 2,000 to 8,000, comprising the adduct obtained by sequentially reacting: (a) a polyhydroxyl initiator, with a functionality of 2 to 5 and a weight average molecular weight as determined by gel permeation chromatography of from 62 to 200; with (b) 10 to 90%, by weight, based on the total oxide present in (b)+(c)+(d), a first alkylene oxide; and subsequently reacting the product with (c) 10 to 80%, by weight, based on the total oxide present in (b)+(c)+(d), 4,4,4-trichloro-1,2-epoxybutane and/or epihalohydrin; and subsequently reacting the product with (d) 10 to 60%, by weight, based on the total oxide present in (b)+(c)+(d), a second alkylene oxide, which may be the same or different than the first alkylene oxide of step (b).
Claim 2
Dependent Claim
126 words
A polyol having a molecular weight of 2,000 to 8,000, comprising the adduct obtained by sequentially reacting: (a) a polyhydroxyl initiator, with a functionality of 2 to 5 and a weight average molecular weight as determined by gel permeation chromatography of from 62 to 200; with (b) 10 to 90%, by weight, based on the total oxide present in (b)+(c)+(d), a first alkylene oxide; and subsequently reacting the product with (c) 10 to 80%, by weight, based on the total oxide present in (b)+(c)+(d), 4,4,4-trichloro-1,2-epoxybutane and/or epihalohydrin; and subsequently reacting the product with (d) 10 to 60%, by weight, based on the total oxide present in (b)+(c)+(d), a second alkylene oxide, which may be the same or different than the first alkylene oxide of step (b).
Claim 3
Dependent Claim
27 words
The polyol of claim 1, wherein said first alkylene oxide and said second alkylene oxide are selected from the group consisting of ethylene oxide and propylene oxide.
Claim 4
Dependent Claim
14 words
The polyol of claim 1, wherein said polyhydroxyl initiator has a functionality of 3.
Claim 5
Dependent Claim
11 words
The polyol of claim 3, wherein said polyhydroxyl initiator is glycerol.
Claim 6
Dependent Claim
23 words
The polyol of claim 1, wherein component (b) is 10 to 50%; (c) is 20 to 50%; and (d) is 10 to 40%.
Claim 7
Dependent Claim
10 words
The polyol of claim 1, wherein component (c) is 4,4,4-trichloro-1,2-epoxybutane.
Claim 8
Dependent Claim
10 words
The polyol of claim 1, wherein component (c) is epihalohydrin.
Claim 9
Dependent Claim
13 words
The polyol of claim 1 having a molecular weight of 5,500 to 7,000.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |