Patent US5278275A successfully refreshed from Google Patents.
US5278275A
Expired / Lapsed
US
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Polyurethane resin composition
Assignee: Toyobo Co Ltd
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Filing: 1991-06-28
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Granted: 1994-01-11
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Expires: 2011-06-28
Abstract
Abstract A polyurethane resin composition containing a polyurethane resin composed of a high molecular weight polyol having a molecular weight of not less than 500, an organic polyisocyanate and optionally a compound having at least 2 active hydrogen-containing groups is disclosed. Not less than 30% by weight of the high molecular weight polyol is a polyester polyol, and the polyester polyol contains at least one tricyclic molecular skeleton in the molecular chain thereof in an amount of not less than 20 mole % based on total acid or glycol components.
Inventors
- 👤 Takeshi Yatsuka
- 👤 Haruo Asai
- 👤 Haruhiko Narusawa
- 👤 Yasunobu Sugyo
- 👤 Hiroshi Fujimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:09
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/702; G11B5/7021; B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/5263; B41M5/5281; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0819; C08G18/0828; C08G18/10; C08G18/28; C08G18/40; C08G18/42; C08G18/4202; C08G18/4205; C08G18/423; C08G18/46; C08G18/4676; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L75/00; C08L75/04; C08L75/06; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
160 words
A polyurethane resin composition which comprises a polyurethane resin that is the reaction product of a number average high molecular weight polyol having a molecular weight of at least 500, an organic polyisocyanate and optionally a compound having at least 2 active hydrogen-containing groups, at least 30% by weight of said high molecular weight polyol being a polyester polyol whose main acid component is an aromatic dicarboxylic acid, said polyester polyol containing at least one tricyclic molecular skeleton derived from an acid compound or a glycol compound and represented by the formula (I): ##STR3## in the molecular chain thereof in an amount of at least 20 mole % based on (i) total acid component in the case that the tricyclic molecular skeleton is derived from an acid compound or (ii) total glycol components in the case that the tricyclic molecular skeleton is derived from a glycol compound and the glass transition temperature of said polyester polyol is at least 40°.
Claim 2
Dependent Claim
160 words
A polyurethane resin composition which comprises a polyurethane resin that is the reaction product of a number average high molecular weight polyol having a molecular weight of at least 500, an organic polyisocyanate and optionally a compound having at least 2 active hydrogen-containing groups, at least 30% by weight of said high molecular weight polyol being a polyester polyol whose main acid component is an aromatic dicarboxylic acid, said polyester polyol containing at least one tricyclic molecular skeleton derived from an acid compound or a glycol compound and represented by the formula (I): ##STR3## in the molecular chain thereof in an amount of at least 20 mole % based on (i) total acid component in the case that the tricyclic molecular skeleton is derived from an acid compound or (ii) total glycol components in the case that the tricyclic molecular skeleton is derived from a glycol compound and the glass transition temperature of said polyester polyol is at least 40°.
Claim 3
Dependent Claim
40 words
A polyurethane resin composition according to claim 1, wherein the polyester polyol contains at least one tricyclic glycol having the tricyclic molecular skeleton of the formula (I) in an amount of 20 mole % based on the total glycol components.
Claim 4
Dependent Claim
17 words
A polyurethane resin composition according to claim 1, wherein the compound containing active hydrogen groups is glycol.
Claim 5
Dependent Claim
36 words
A polyurethane resin composition according to claim 2, wherein the compound having at least 2 active hydrogen-containing groups is a di, tri or tetra functional compound having a number average molecular weight of less than 500.
Claim 6
Dependent Claim
37 words
A polyurethane resin composition according to claim 4, wherein at least 30 mole % of the glycol components of the polyester polyol is a tricyclic glycol having the molecular skeleton of the group of the formula (I).
Claim 7
Dependent Claim
22 words
A polyurethane resin composition according to claim 1, wherein the glass transition temperature of the polyester polyol is 50° to 120° C.
Claim 8
Dependent Claim
57 words
A polyurethane resin composition according to claim 6, wherein the high molecular weight polyol is a mixture of a polyester diol and a polyol other than the polyester diol and the difference in the glass transition temperatures between the polyester diol and the high molecular weight polyol other than the polyester diol is at least 80° C.
Claim 9
Dependent Claim
39 words
A polyurethane resin composition according to claim 5, wherein the glycol component of the polyester polyol contains a glycol having 8 or more carbon atoms in addition to the tricyclic glycol having the molecular skeleton of the formula (I).
Claim 10
Dependent Claim
37 words
A polyurethane resin composition according to claim 8, wherein the molar ratio of the tricyclic glycol having the molecular skeleton of the formula (I) to the glycol having 8 or more carbon atoms is 4:1 to 1:3.
Claim 11
Dependent Claim
53 words
A polyurethane resin composition according to claim 9, wherein ethylene glycol is contained in addition to the tricyclic glycol having the skeleton of the formula (I) and the glycol having 8 or more carbon atoms, and the amount of ethylene glycol is at most 50 mole % based on the total glycol components.
Claim 12
Dependent Claim
38 words
A polyurethane resin composition according to claim 6, wherein the number-average molecular weight of the polyurethane resin is 5,000 to 80,000 and a concentration of urethane bond in the polyurethane resin is 500 to 4,000 equivalent/10 6 g.
Claim 13
Dependent Claim
30 words
A polyurethane resin composition according to claim 11, wherein the polyurethane resin has an ionic polar group and a concentration of urethane bond is 700 to 1,500 equivalent/10 6 g.
Claim 14
Dependent Claim
16 words
A polyurethane resin composition according to claim 11, which contains a crosslinking agent for polyurethane resins.
Claim 15
Dependent Claim
32 words
A polyurethane resin composition according to claim 13, wherein the crosslinking agent is at least one compound selected from the group consisting of polyisocyanate compounds, polyepoxy compounds and alkyl etherified amino-formaldehyde resins.
Claim 16
Dependent Claim
31 words
A polyurethane resin compound according to claim 14, which contains at least one type of inorganic particles selected from the group consisting of magnetic particles, pigments, carbon black and inorganic lubricants.
References Cited (Backward Citations)
DE1966182A1
Cited
US4543369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-01-10 | 1997-07-12 | 1998-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-10 | 2001-07-12 | 2002-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-10 | 2005-07-12 | 2006-01-11 | $7700.00 | Window Closed / Lapsed |