US5948875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethaneureas and spandex made therefrom
Assignee: Invista North America LLC
•
Filing: 1998-03-26
•
Granted: 1999-09-07
•
Expires: 2018-03-26
Abstract
Abstract New polyurethaneurea polymers and spandex made therefrom, based on certain glycols, MDI and a diamine chain extender mixture containing high proportions of 2-methyl-1,5-pentanediamine and prepared at selected capping ratios, are provided.
Inventors
- 👤 Hong Liu
- 👤 Robert Otto Waldbauer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:53
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/58; D01F6/70; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4854; C08G18/4858; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
A polyurethaneurea polymer consisting essentially of the product of: a polyether glycol selected from the group consisting of a homopolymer of tetrahydrofuran and a copolymer of tetrahydrofuran and 3-methyltetrahydrofuran monomers; 1,1'-methylenebis(4-isocyanatobenzene); and a diamine chain extender(s) wherein at least one diamine is 2-methyl-1,5-pentanediamine present to an extent of at least 50 mole % of the mixture of diamines when the glycol is said homopolymer and at least 55 mole % when the glycol is said copolymer; wherein the range of ratios of said bis-isocyanate to said glycol is ______________________________________
% MPMD capping ratio
______________________________________
for said homopolymer,
50 1.81-2.07
60 1.87-2.15
70 1.93-2.23
80 1.99-2.31
90 2.05-2.39
100 2.10-2.50 and
for said copolymer,
55 2.28-2.67
60 2.33-2.74
70 2.43-2.88
80 2.54-3.01
90 2.65-3.15
100 2.76-3.30.
______________________________________
Claim 2
Dependent Claim
126 words
A polyurethaneurea polymer consisting essentially of the product of: a polyether glycol selected from the group consisting of a homopolymer of tetrahydrofuran and a copolymer of tetrahydrofuran and 3-methyltetrahydrofuran monomers; 1,1'-methylenebis(4-isocyanatobenzene); and a diamine chain extender(s) wherein at least one diamine is 2-methyl-1,5-pentanediamine present to an extent of at least 50 mole % of the mixture of diamines when the glycol is said homopolymer and at least 55 mole % when the glycol is said copolymer; wherein the range of ratios of said bis-isocyanate to said glycol is ______________________________________
% MPMD capping ratio
______________________________________
for said homopolymer,
50 1.81-2.07
60 1.87-2.15
70 1.93-2.23
80 1.99-2.31
90 2.05-2.39
100 2.10-2.50 and
for said copolymer,
55 2.28-2.67
60 2.33-2.74
70 2.43-2.88
80 2.54-3.01
90 2.65-3.15
100 2.76-3.30.
______________________________________
Claim 3
Dependent Claim
16 words
The polyurethaneurea polymer of claim 1 wherein said copolymer contains 4-20 mole % of 3-methyltetrahydrofuran monomer.
Claim 4
Dependent Claim
19 words
The polyurethaneurea polymer of claim 2 said copolymer has a number average molecular weight in the range of 3000-4000.
Claim 5
Dependent Claim
29 words
The polyurethaneurea polymer of claim 3 wherein 2-methyl-1,5-pentanediamine is present to the extent of at least 80 mole % of total chain extender, the remaining chain extender being ethylenediamine.
Claim 6
Dependent Claim
28 words
The polyurethaneurea polymer of claim 2 wherein the 3-methyltetrahydrofuran monomer is present in said copolymer to the extent of 10-15 mole % and the chain extender is 2-methyl-1,5-pentanediamine.
Claim 7
Dependent Claim
15 words
The polyurethaneurea polymer of claim 1 wherein said polyether glycol is a homopolymer of tetrahydrofuran.
Claim 8
Dependent Claim
20 words
The polyurethaneurea polymer of claim 6 wherein said homopolymer has a number average molecular weight in the range of 1600-2200.
Claim 9
Dependent Claim
29 words
The polyurethaneurea polymer of claim 7 wherein 2-methyl-1,5-pentanediamine is present to the extent of at least 80 mole % of total chain extender, the remaining chain extender being ethylenediamine.
Claim 10
Dependent Claim
12 words
The polyurethaneurea polymer of claim 6 wherein the chain extender is 2-methyl-1,5-pentanediamine.
Claim 11
Dependent Claim
131 words
A spandex spun from a polyurethaneurea polymer consisting essentially of the product of: a polyether glycol selected from the group consisting of a homopolymer of tetrahydrofuran and a copolymer of tetrahydrofuran and 3-methyltetrahydrofuran monomers; 1,1'-methylenebis(4-isocyanatobenzene); and a diamine chain extender(s) wherein at least one diamine is 2-methyl-1,5-pentanediamine present to an extent of at least 50 mole % of the mixture of diamines when the glycol is said homopolymer and at least 55 mole % when the glycol is said copolymer; and wherein the range of ratios of said bis-isocyanate to said glycol is ______________________________________
% MPMD capping ratio
______________________________________
for said homopolymer,
50 1.81-2.07
60 l.87-2.15
70 1.93-2.23
80 1.99-2.31
90 2.05-2.39
100 2.10-2.50 and
for said copolymer,
55 2.28-2.67
60 2.33-2.74
70 2.43-2.88
80 2.54-3.01
90 2.65-3.15
100 2.76-3.30.
______________________________________
Claim 12
Dependent Claim
131 words
A spandex spun from a polyurethaneurea polymer consisting essentially of the product of: a polyether glycol selected from the group consisting of a homopolymer of tetrahydrofuran and a copolymer of tetrahydrofuran and 3-methyltetrahydrofuran monomers; 1,1'-methylenebis(4-isocyanatobenzene); and a diamine chain extender(s) wherein at least one diamine is 2-methyl-1,5-pentanediamine present to an extent of at least 50 mole % of the mixture of diamines when the glycol is said homopolymer and at least 55 mole % when the glycol is said copolymer; and wherein the range of ratios of said bis-isocyanate to said glycol is ______________________________________
% MPMD capping ratio
______________________________________
for said homopolymer,
50 1.81-2.07
60 l.87-2.15
70 1.93-2.23
80 1.99-2.31
90 2.05-2.39
100 2.10-2.50 and
for said copolymer,
55 2.28-2.67
60 2.33-2.74
70 2.43-2.88
80 2.54-3.01
90 2.65-3.15
100 2.76-3.30.
______________________________________
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) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |