US3674746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High crystalline transition temperature elastomers from polyester polyurethanes
Assignee: BASF Schweiz AG
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Filing: 1969-12-02
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Granted: 1972-07-04
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Expires: 1989-12-02
Abstract
Abstract Manufacture of high molecular, crosslinked crystalline polyadducts possessing urethane groups, from (a) linear succinic acid butane-1,4-diol polyesters possessing terminal hydroxyl groups and having an average molecular size of about 750 to about 5300, (b) as crosslinking agents, polyhydroxyl compounds containing at least 3 hydroxyl groups, preferably those having a hydroxyl equivalent weight of at most 300, e.g., 3-hydroxymethyl2,4-dihydroxypentane, and (c) diisocyanates, for example hexamethylene-diisocyanate 3,5,5-trimethyl-3-(isocyanato-methyl)cyclohexane-isocyanate-(1), 2,4-toluylene-diisocyanate or 2,6toluylene-diisocyanate, with 0.9 to 1.1 equivalents of isocyanate groups of the isocyanate being employed in each case per 1 equivalent of the total amount of hydroxyl groups of the two components (a) and (b).
Inventors
- 👤 Friedrich Lohse
- 👤 Rolf Schmid
- 👤 Willy Fisch
- 👤 Hans Batzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:07
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/66; C08G18/6633; C08G18/6637; C08G18/664; C08G18/6644; C08G2250/00; Y; Y10; Y10S; Y10S260/00; Y10S260/35
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
19 words
A composition as claimed in claim 1 which contains an aliphatic, cycloaliphatic or araliphatic diisocyanate as the diisocyanate (c).
Claim 2
Dependent Claim
15 words
A composition as claimed in claim 1 which contains hexamethylene-diisocyanate or 3,5,5-trimethyl-3-isocyanatomethyl-cyclohexane-isocyanate-(1) as the diisocyanate.
Claim 3
Dependent Claim
15 words
A composition as claimed in claim 1 which contains an aromatic diisocyanate as the diisocyanate.
Claim 4
Dependent Claim
15 words
A composition as claimed in claim 1 which contains 2,4-toluylene-diisocyanate or 2,6-toluylene-diisocyanate as the diisocyanate.
Claim 5
Dependent Claim
27 words
A composition as claimed in claim 1 which contains an addition product of 2 mols of a diisocyanate to 1 mol of a glycol as the diisocyanate.
Claim 6
Dependent Claim
26 words
A composition as claimed in claim 1 which contains the addition product of 2 mols of 2,4-toluylene-diisocyanate to 1 mol of ethylene glycol as the diisocyanate.
Claim 7
Dependent Claim
136 words
A thermocurable composition of matter characterized on curing by a crystallization transition temperature above about 80*C which comprises (a) a linear succinic acid or anhydride butane-1, 4-diol polyester possessing terminal hydroxyl groups and having an average molecular size of from about 750 to about 5,300, (b) an addition product of 1 mol of glycerine to 1 mol of styrene oxide and (c) a diisocyanate with 0.9 to 1.1 equivalents of isocyanate groups of the diisocyanate (c) being present in each case per 1 equivalent of the total amount of hydroxyl groups of the two components (a) and (b), and, further, with 1 equivalent of the total amount of hydroxyl groups being composed of 0.95 -0.5 equivalents of hydroxyl groups of the polyesters (a) and 0.05 to 0.5 equivalents of hydroxyl groups of the polyhydroxyl compound (b).
Claim 8
Dependent Claim
137 words
A thermocurable composition of matter characterized on curing by a crystallization transition temperature above about 80*C which comprises (a) a linear succinic acid or anhydride butane-1, 4-diol polyester possessing terminal hydroxyl groups and having an average molecular size of from about 750 to about 5,300, (b) an addition product of 1 mol of 1,1,1-trihydroxymethylpropane to 3 mols of propylene oxide, and (c) a diisocyanate with 0.9 to 1.1 equivalents of isocyanate groups of the diisocyanate (c) being present in each case per 1 equivalent of the total amount of hydroxyl groups of the two components (a) and (b), and, further, with 1 equivalent of the total amount of hydroxyl groups being composed of 0.95 - 0.5 equivalents of hydroxyl groups of the polyesters (a) and 0.05 to 0.5 equivalents of hydroxyl groups of the polyhydroxyl compound (b).
Claim 9
Dependent Claim
137 words
A thermocurable composition of matter characterized on curing by a crystallization transition temperature above about 80*C which comprises (a) a linear succinic acid or anhydride butane-1,4-diol polyester possessing terminal hydroxyl groups and having an average molecular size of from about 750 to about 5, 300, (b) an addition product of 1 mol of 1,1,1-trihydroxymethylpropane to 1 mol of styrene oxide and (c) a diisocyanate with 0.9 to 1.1 equivalents of isocyanate groups of the diisocyanate (c) being present in each case per 1 equivalent of the total amount of hydroxyl groups of the two components (a) and (b), and, further, with 1 equivalent of the total amount of hydroxyl groups being composed of 0.95 - 0.5 equivalents of hydroxyl groups of the polyesters (a) and 0.05 to 0.5 equivalents of hydroxyl groups of the polyhydroxyl compound (b).
Claim 10
Dependent Claim
126 words
A thermocurable composition of matter characterized on curing by a crystallization transition temperature above about 80*C which comprises (a) a linear succinic acid or anhydride butane-1,4-diol polyester possessing terminal hydroxyl groups and having an average molecular size of from about 750 to about 5, 300, (b) glycerine or pentaerythritol and (c) a diisocyanate with 0.9 to 1.1 equivalents of isocyanate groups of the diisocyanate (c) being present in each case per 1 equivalent of the total amount of hydroxyl groups of the two components (a) and (b), and, further, with 1 equivalent of the total amount of hydroxyl groups being composed of 0.95 - 0.5 equivalents of hydroxyl groups of the polyesters (a) and 0.05 to 0.5 equivalents of hydroxyl groups of the polyhydroxyl compound (b).
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |