US4420601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic polyurethan resin
Assignee: DIC Corp
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Filing: 1982-03-02
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Granted: 1983-12-13
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Expires: 2002-03-02
Abstract
Abstract A thermoplastic polyurethan resin obtained by reacting (1) a polyol component with (2) an organic diisocyanate in a mole ratio, (1)/(2), of 0.8-1.3:0.5-1.2 in the presence, if desired, of a catalyst, said polyol component (1) comprising (A) a linear polyester polyol and/or polyether polyol having hydroxyl groups at both ends and/or (B) a diol free from a tertiary hydroxyl group, and (C) a low-molecular-weight polyol having at least one tertiary hydroxyl group (C-1), and/or a polyester polyol and/or polyether polyol having a molecular weight of 500 to 6,000 and containing hydroxyl groups at both ends and at least one tertiary hydroxyl group in the molecular chain (C-2) prepared from said low-molecular-weight polyol (C-1), the proportions of (A), (B) and (C) in said polyol component (1) being such that the ratio of (C) to the sum of (A), (B) and (C) is from 0.05 to 1.
Inventors
- 👤 Yoshimi Kuroda
- 👤 Shichinosuke Ito
- 👤 Akio Midorikawa
- 👤 Kuniomi Terashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:03
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3206; C08G18/40; C08G18/4009; C08G18/42; C08G18/4202; C08G18/65; C08G18/66; C08G18/6603; C08G18/6607; C08G18/6611; C09; C09J; C09J175/00; C09J175/04; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/702; G11B5/7021; C08G2140/00
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
145 words
A thermoplastic polyurethan resin obtained by reacting (1) a polyol component with (2) an organic diisocyanate in a mole ratio, (1)/(2), of 0.8-1.3:0.5-1.2 in the presence, if desired, of a catalyst, said polyol component (1) comprising (A) a linear polyester polyol and/or polyether polyol having hydroxyl groups at both ends and/or (B) a diol free from a tertiary hydroxyl group, and (C) a low-molecular-weight polyol having at least one tertiary hydroxyl group (C-1), and/or a polyester polyol and/or polyether polyol having a molecular weight of 500 to 6,000 and containing hydroxyl groups at both ends and at least one tertiary hydroxyl group in the molecular chain (C-2) prepared from said low-molecular-weight polyol (C-1), the proportions of (A), (B) and (C) in said polyol component (1) being such that the ratio of (C) to the sum of (A), (B) and (C) is from 0.05 to 1.
Claim 2
Dependent Claim
145 words
A thermoplastic polyurethan resin obtained by reacting (1) a polyol component with (2) an organic diisocyanate in a mole ratio, (1)/(2), of 0.8-1.3:0.5-1.2 in the presence, if desired, of a catalyst, said polyol component (1) comprising (A) a linear polyester polyol and/or polyether polyol having hydroxyl groups at both ends and/or (B) a diol free from a tertiary hydroxyl group, and (C) a low-molecular-weight polyol having at least one tertiary hydroxyl group (C-1), and/or a polyester polyol and/or polyether polyol having a molecular weight of 500 to 6,000 and containing hydroxyl groups at both ends and at least one tertiary hydroxyl group in the molecular chain (C-2) prepared from said low-molecular-weight polyol (C-1), the proportions of (A), (B) and (C) in said polyol component (1) being such that the ratio of (C) to the sum of (A), (B) and (C) is from 0.05 to 1.
Claim 3
Dependent Claim
24 words
The resin of claim 1 wherein the polyester polyol and/or polyether polyol (A) is present and has a molecular weight of 500 to 6,000.
Claim 4
Dependent Claim
20 words
The resin of claim 1 or 2 wherein the diol (B) in present and has 2 to 10 carbon atoms.
Claim 5
Dependent Claim
25 words
The resin of claim 2 wherein the low-molecular-weight polyol (C-1) is present and has 3 to 6 hydroxyl groups and 4 to 10 carbon atoms.
Claim 6
Dependent Claim
30 words
The resin of any one of claims 1, 2 or 4 wherein the polyester polyol and/or polyether polyol (C-2) is present and has a molecular weight of 800 to 3,000.
Claim 7
Dependent Claim
35 words
The resin of any one of claims 1, 2 or 4 wherein the mole ratio of (C) to the sum of (A), (B) and (C) is from 0.05 to 0.5 or from 0.8 to 1.
Claim 8
Dependent Claim
149 words
A process for producing a thermoplastic polyurethane resin which comprises reacting (1) a polyol component with (2) an organic diisocyanate in a mole ratio, (1)/(2), of 0.8-1.3:0.5-1.2 in the presence, if desired, of a catalyst, said polyol component (1) comprising (A) a linear polyester polyol and/or polyether polyol having hydroxyl groups at both ends and/or (B) a diol free from a tertiary hydroxyl group, and (C) a low-molecular-weight polyol having at least one tertiary hydroxyl group (C-1), and/or a polyester polyol and/or polyether polyol having a molecular weight of 500 to 6,000 and containing hydroxyl groups at both ends and at least one tertiary hydroxyl group in the molecular chain (C-2) prepared from said low-molecular-weight polyol (C-1), the proportions of (A), (B) and (C) in said polyol component (1) being such that the ratio of (C) to the sum of (A), (B) and (C) is from 0.05 to 1.
Claim 9
Dependent Claim
149 words
A process for producing a thermoplastic polyurethane resin which comprises reacting (1) a polyol component with (2) an organic diisocyanate in a mole ratio, (1)/(2), of 0.8-1.3:0.5-1.2 in the presence, if desired, of a catalyst, said polyol component (1) comprising (A) a linear polyester polyol and/or polyether polyol having hydroxyl groups at both ends and/or (B) a diol free from a tertiary hydroxyl group, and (C) a low-molecular-weight polyol having at least one tertiary hydroxyl group (C-1), and/or a polyester polyol and/or polyether polyol having a molecular weight of 500 to 6,000 and containing hydroxyl groups at both ends and at least one tertiary hydroxyl group in the molecular chain (C-2) prepared from said low-molecular-weight polyol (C-1), the proportions of (A), (B) and (C) in said polyol component (1) being such that the ratio of (C) to the sum of (A), (B) and (C) is from 0.05 to 1.
Claim 10
Dependent Claim
24 words
The process of claim 7 wherein the polyester polyol and/or polyether polyol (A) is used and has a molecular weight of 500 to 6,000.
Claim 11
Dependent Claim
20 words
The process of claim 7 or 8 wherein the diol (B) is used and has 2 to 10 carbon atoms.
Claim 12
Dependent Claim
30 words
The process of any one of claims 7, or 8 wherein the low-molecular-weight polyol (C-1) is used and has 3 to 6 hydroxyl groups and 4 to 10 carbon atoms.
Claim 13
Dependent Claim
29 words
The process of any one of claims 7 or 8 wherein the polyester polyol and/or polyether polyol (C-2) is used and has a molecular weight of 800 to 3,000.
Claim 14
Dependent Claim
32 words
The process of any one of claims 7 or 8 wherein the mole ratio of (C) to the sum of (A), (B) and (C) is from 0.05 or from 0.8 to 1.
Claim 15
Dependent Claim
19 words
A magnetic coating composition comprising a magnetic powder, the resin of claim 1 and a solvent for said resin.
Claim 16
Dependent Claim
12 words
An adhesive composition comprising the resin of claim 1 and a polyisocyanate.
Claim 17
Dependent Claim
11 words
A molded article prepared by using the resin of claim 1.
Claim 18
Dependent Claim
24 words
The resin of claim 1 wherein the low-molecular-weight (C-1) is present and has 3 to 6 hydroxyl groups and 4 to 10 carbon atoms.
Claim 19
Dependent Claim
18 words
The resin of claim 4 wherein the diol (B) is present and has 2 to 10 carbon atoms.
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) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |