US4454309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane polyene compositions
Assignee: Tyndale Plains Hunter Ltd
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Filing: 1982-10-08
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Granted: 1984-06-12
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Expires: 2002-10-08
Abstract
Abstract Polyurethane polyene compositions are obtained by reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane resin. The resulting products will swell and increase in weight upon immersion in water and are permeable to gases, moisture vapor ions, and other low molecular weight species. The hydrophilic polyurethane diacrylate compositions may be molded to form shaped products that are dimensionally stable after repeated exposure to boiling water and exhibit memory.
Inventors
- 👤 Francis E. Gould
- 👤 Christian W. Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:25
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/06; B01D71/54; A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/2031; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61L15/24; A61L15/42; A61L15/44; A61L15/60; A61L17/00; A61L17/04; B01D71/48; C; C08; C08F; C08F283/00; C08F299/00; C08F299/02; C08F299/06; C08F299/065; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/6674; G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043; A61F; A61F2/00; A61F2/0004; A61L2300/00; A61L2300/20; A61L2300/21; A61L2300/22; A61L2300/222; A61L2300/40; A61L2300/43; C08G2210/00; H; H01; H01M; H01M50/00; H01M50/40; H01M50/409; H01M50/411; H01M50/414; H01M50/489; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S521/00; Y10S521/905; Y10S525/00; Y10S525/92; Y10S525/937; Y10S528/00; Y10S528/904
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
99 words
A hydrophilic polyurethane polyene composition comprising from about 10 to about 50 parts by weight of a polyene selected from the group consisting of polyallyl esters having the formula: ##STR7## wherein n is a whole number larger than 1 and smaller than 4, and R is the residue of a polybasic acid; and polyacrylic esters having the formula: ##STR8## wherein n is a whole number larger than 2 and smaller than 7, R is hydrogen or a methyl radical and A is the residue of a polyhydric alcohol; and about 100 parts by weight of a hydrophilic polyurethane resin.
Claim 2
Dependent Claim
99 words
A hydrophilic polyurethane polyene composition comprising from about 10 to about 50 parts by weight of a polyene selected from the group consisting of polyallyl esters having the formula: ##STR7## wherein n is a whole number larger than 1 and smaller than 4, and R is the residue of a polybasic acid; and polyacrylic esters having the formula: ##STR8## wherein n is a whole number larger than 2 and smaller than 7, R is hydrogen or a methyl radical and A is the residue of a polyhydric alcohol; and about 100 parts by weight of a hydrophilic polyurethane resin.
Claim 3
Dependent Claim
14 words
The polyurethane polyene composition of claim 1 wherein said polyene is trimethylol propane triacrylate.
Claim 4
Dependent Claim
13 words
The polyurethane polyene composition of claim 1 wherein said polyene is diallyl phthalate.
Claim 5
Dependent Claim
13 words
The polyurethane polyene composition of claim 1 wherein said polyene is pentaerythritol triacrylate.
Claim 6
Dependent Claim
14 words
The polyurethane polyene composition of claim 1 wherein said polyene is trimethylol propane trimethacrylate.
Claim 7
Dependent Claim
24 words
The polyurethane polyene composition of claim 2 characterized by about 15 parts trimethylol propane triacrylate and about 100 parts of a hydrophilic polyurethane resin.
Claim 8
Dependent Claim
22 words
The polyurethane polyene composition of claim 3 characterized by about 15 parts diallyl phthalate and about 100 parts of hydrophilic polyurethane resin.
Claim 9
Dependent Claim
23 words
The polyurethane polyene composition of claim 4 characterized by about 15 parts of pentaerythritol triacrylate and about 100 parts of hydrophilic polyurethane resin.
Claim 10
Dependent Claim
24 words
The polyurethane polyene composition of claim 5 characterized by about 15 parts of trimethylol propane trimethacrylate and about 100 parts of hydrophilic polyurethane resin.
Claim 11
Dependent Claim
23 words
The polyurethane polyene composition of claim 1 characterized by about 25 parts of polyene and about 100 parts of a hydrophilic polyurethane resin.
Claim 12
Dependent Claim
23 words
The polyurethane polyene composition of claim 1 characterized by about 15 parts of polyene and about 100 parts of a hydrophilic polyurethane resin.
Claim 13
Dependent Claim
22 words
The polyurethane polyene composition of claim 1 characterized by about 30 parts of polyene and about 100 parts of hydrophilic polyurethane resin.
Claim 14
Independent Claim
37 words
A method of preparing a hydrophilic polyurethane polyene composition which comprises reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane.
Claim 15
Independent Claim
37 words
A method of preparing a hydrophilic polyurethane polyene composition which comprises reacting from about 10 to about 50 parts by weight of a polyene in the presence of about 100 parts by weight of a hydrophilic polyurethane.
References Cited (Backward Citations)
US3297745A
Cited
US3553174A
Cited
US3719638A
Cited
US3931123A
Cited
US3822238A
Cited
US3975350A
Cited
US4056496A
Cited
US4117184A
Cited
US4116786A
Cited
US4250248A
Cited
US4209605A
Cited
US4246391A
Cited
US4359558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |