US4849293A
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Amorphous polyester compositions and uses thereof
Assignee: Mitsui Chemicals Inc
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Filing: 1987-10-01
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Granted: 1989-07-18
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Expires: 2007-10-01
Abstract
Abstract An amorphous polyester composition according to the present invention comprises (A) a low crystalline polyolefin modified with unsaturated carboxylic acids, (B) an amorphous polyester, (C) a silane coupling agent and (D) an optional inorganic filler, wherein (A) forms a matrix phase and (B) forms a domain phase. This amorphous polyester composition has excellent adhesion properties to different materials such as metal and has excellent damping performance, and therefore a damping material having excellent initial adhesion properties and water-resistant adhesion properties and excellent damping performance, particularly at high temperatures can be obtained from such an amorphous polyester composition.
Inventors
- 👤 Hitoshi Koga
- 👤 Kazuo Iwata
- 👤 Masushi Mishimoto
- 👤 Nikio Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:37
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06; C08L23/00; C08L23/26; C08L67/00; C08L67/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
93 words
A vibration damping material comprising an amorphous polyester composition comprising (A) a low crystalline polyolefin having a crystallinity of no more than 20% modified with an unsaturated carboxylic acid, (B) an amorphous polyester and (C) a silane coupling agent, wherein (A) is present from 30% to 60% by weight; (B) is present from 40% to 70% by weight; (C) is present from 0.05 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); and (A) forms a matrix phase, and (B) forms a domain phase.
Claim 2
Dependent Claim
93 words
A vibration damping material comprising an amorphous polyester composition comprising (A) a low crystalline polyolefin having a crystallinity of no more than 20% modified with an unsaturated carboxylic acid, (B) an amorphous polyester and (C) a silane coupling agent, wherein (A) is present from 30% to 60% by weight; (B) is present from 40% to 70% by weight; (C) is present from 0.05 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); and (A) forms a matrix phase, and (B) forms a domain phase.
Claim 3
Dependent Claim
22 words
A vibration damping material according to claim 1 wherein the unsaturated carboxylic acid is maleic acid, endocis-bicyclo[2.2.1]-hept-5-ene-2,3-dicarboxylic acid or acid anhydrides thereof.
Claim 4
Dependent Claim
57 words
A vibration damping material according to claim 1 wherein from 15 to 100 mole % of the dicarboxylic acid component of the amorphous polyester (B) is isophthalic acid and the remainder is terephthalic acid, and wherein from 5 to 90 mole % of the dihydroxy compound component is 1,3-bis(2-hydroxyethoxy)benzene and/or 1,4-bis(2-hydroxyethoxy)-benzene and the remainder is ethylene glycol.
Claim 5
Dependent Claim
16 words
A vibration damping material according to claim 1 wherein the silane coupling agent (C) is gamma-glycidoxypropyl-trimethoxysilane.
Claim 6
Dependent Claim
51 words
A vibration damping material according to claim 1 wherein (A) is present from 40% to 50% by weight, (B) is present from 50 to 60% by weight and (C) is present from 1 to 2 parts by weight per 100 parts by weight of the total amount of (A) and (B).
Claim 7
Dependent Claim
13 words
The vibration damping material according to claim 1 which is laminated with metal.
Claim 8
Dependent Claim
49 words
The vibration damping material according to claim 1 which is in the form of a laminated composite structure comprising an intermediate layer of said amorphous polyester composition interposed between first and second layers composed of metal, at least one of said first and second layers being an outer layer.
Claim 9
Dependent Claim
51 words
The vibration damping material according to claim 6 characterized by a T-peel strength of at least 10 kg/25 mm, a core shearing strength of at least 100 kg/cm 2 and a high value of vibration loss coefficient of at least 0.1 in the temperature range of from 80° to 100° C.
Claim 10
Dependent Claim
127 words
A vibration damping material comprising an amorphous polyester composition comprising (A) a low crystalline polyolefin having a crystallinity of no more than 20% modified with an unsaturated carboxylic acid, (B) an amorphous polyester, (C) a silane coupling agent and (D) an inorganic filler, wherein (A) is present from 30% to 60% by weight; (B) is present from 40% to 70% by weight; (C) is incorporated in an amount of from 0.05 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); (D) is incorporated in an amount of from 0.5 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); (A) forms a matrix phase, and (B) forms a domain phase.
Claim 11
Dependent Claim
127 words
A vibration damping material comprising an amorphous polyester composition comprising (A) a low crystalline polyolefin having a crystallinity of no more than 20% modified with an unsaturated carboxylic acid, (B) an amorphous polyester, (C) a silane coupling agent and (D) an inorganic filler, wherein (A) is present from 30% to 60% by weight; (B) is present from 40% to 70% by weight; (C) is incorporated in an amount of from 0.05 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); (D) is incorporated in an amount of from 0.5 to 4 parts by weight per 100 parts by weight of the total amount of (A) and (B); (A) forms a matrix phase, and (B) forms a domain phase.
Claim 12
Dependent Claim
22 words
The vibration damping material according to claim 9 wherein the unsaturated carboxylic acid is maleic acid, endocis-bycyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid or acid anhydrides thereof.
Claim 13
Dependent Claim
57 words
The vibration damping material according to claim 9 wherein from 15 to 100 mole % of the dicarboxylic acid component of the amorphous polyester (B) is isophthalic acid and the remainder is terephthalic acid, and wherein from 5 to 90 mole % of the dihydroxy compound component is 1,3-bis(2-hydroxyethoxy)benzene and/or 1,4-bis(2-hydroxyethoxy)benzene and the remainder is ethylene glycol.
Claim 14
Dependent Claim
16 words
The vibration damping material according to claim 9 wherein the silane coupling agent (C) is gamma-glycidoxypropyltrimethoxysilane.
Claim 15
Dependent Claim
27 words
The vibration damping material according to claim 9 wherein the inorganic filler (D) is selected from the group consisting of talc, silica, calcium carbonate, clay and mica.
Claim 16
Dependent Claim
74 words
The vibration damping material according to claim 9 wherein (A) is present from 40 to 50% by weight, (B) is present from 50 to 60% by weight, (C) is incorporated from 1 to 2 parts by weight per 100 parts by weight of the total amount of (A) and (B), and (D) is incorporated from 1 to 2 parts by weight per 100 parts by weight of the total amount of (A) and (B).
Claim 17
Dependent Claim
15 words
The vibration damping material according to claim 9 which is a structure laminated with metal.
Claim 18
Dependent Claim
43 words
A vibration damping material according to claim 9 which is in the form of a laminated composite structure comprising a layer of said amorphous polyester composition interposed between layers composed of metal, at least one of said metal layers being an outer layer.
Claim 19
Dependent Claim
51 words
The vibration damping material according to claim 15 characterized by a T-peel strength of at least 10 kg/25 mm, a core shearing strength of at least 100 kg/cm 2 and a high value of vibration loss coefficient of at least 0.1 in the temperature range of from 80° to 100° C.
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) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |