Patent EP0232605A2 successfully refreshed from Google Patents.
EP0232605A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pressure vessels
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1986-12-09
•
Granted: —
•
Expires: 2006-12-09
Abstract
Abstract A pressure vessel is formed from reinforcing fibres and a synthetic resin matrix, e.g. by the filament winding method, the reinforcing fibres being of an aromatic polyester which exhibits anisotropy in its molten state.
Inventors
- 👤 Hiroaki Sugimoto
- 👤 Kazuo Hayatsu
- 👤 Kohji Yamatsuta
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 09:42
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/16; C; C08; C08J; C08J5/00; C08J5/04; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2203/0656; F17C2203/0658; F17C2203/0663; F17C2223/00; F17C2223/03; F17C2223/035; F17C2223/036
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
38 words
A pressure vessel made of a fibre-reinforced plastics material formed from reinforcing fibres and a synthetic resin matrix characterized in that the reinforcing fibres are fibres formed of an aromatic polyester which exhibits anisotropy in its molten state.
Claim 2
Dependent Claim
38 words
A pressure vessel made of a fibre-reinforced plastics material formed from reinforcing fibres and a synthetic resin matrix characterized in that the reinforcing fibres are fibres formed of an aromatic polyester which exhibits anisotropy in its molten state.
Claim 3
Dependent Claim
26 words
A pressure vessel according to claim 1 characterized in that the aromatic polyesters is derived from an aromatic diol and/or aromatic hydrocarboxylic acid or derivative thereof.
Claim 4
Dependent Claim
35 words
A pressure vessel according to claim 2 characterized in that the aromatic dicarboxylic acid is terephthalic acid, isophthalic acid, 4,4'-dicarboxyldiphenyl, 2,6-dicarboxynaphthalene or 1,2-bis(4-carboxyphenoxy)ethane, or a nuclear-substituted derivative thereof having halogen, alkyl, aryl, or alkoxy substituents.
Claim 5
Dependent Claim
43 words
A pressure vessel according to claim 2, characterized in that the aromatic diol is hydroquinone, resorcinol, 4,4'-di-hydroxydiphenyl, 4,4'-dihydroxybenzophenone, 4,4'-di-hydroxydiphenylmethane, 4,4'-dihydroxydiphenylethane, 2,2-bis(4-hydroxyphenyl)propane, 4.4'-dihydroxydiphenyl ether, 4,4'-dihydroxydiphenyl sulphone, 4.4'-dihydroxydiphenyl sulphide, 2,6-dihydroxynaphthalene or 1,5-dihydroxynaphthalene, or a nuclear-substituted product thereof having halogen or alkyl, aryl or alkoxy substituents.
Claim 6
Dependent Claim
35 words
A pressure vessel according to claim 2, wherein the aromatic hydrocarboxylic acid is p-hydroxybenzoic acid, m-hydroxybenzoic acid, 2-hydroxynaphthalene-6-carboxylic acid or 1-hydroxynaphthalene-5-carboxylic acid, or a nuclear-substituted product thereof having halogen or alkyl, aryl or alkoxy substituents.
Claim 7
Dependent Claim
89 words
A pressure vessel according to any one o the preceding claims wherein the aromatic polyester is (i) a copolyester comprising 40 to 70 mole % of p-hydroxybenzoic acid residues, 15 to 30 mole % of an aromatic dicarboxylic acid residues, and 15 to 30 mole % of aromatic diol residues; (ii) a copolyester of terephthalic acid and/or isophthalic acid together with chlorohydroquinone, phenylhydroquinone and/or hydroquinone; or (iii) a copolyester comprising 20 to 80 mole % of p-hydroxybenzoic acid residues and 20 to 80 mole % of 2-hydroxynaphthalene-6-carboxylic acid residues.
Claim 8
Dependent Claim
44 words
A pressure vessel as claimed in any one of the preceding claims characterized in that the fibres of aromatic polyester have thickness of 0.5 to 10 deniers, a strength of 15 g/d or more, and a modulus of elasticity of 500 g/d or more.
Claim 9
Dependent Claim
42 words
A pressure vessel as claimed in any one of the preceding claims characterized in that the synthetic resin used as matrix is an epoxy, unsaturated polyester, phenol, diallyl phthalate, polyimide, polyolefin, polyamide, linear polyester, polycarbonate, polyamideimide, polyether, polysulphone, polyetherimide or polyetherketone resin.
Claim 10
Dependent Claim
32 words
A pressure vessel as claimed in any one of the preceding claims also containing further reforcing fibres which are glass, carbon, alumina, silicon carbide, boron, amorphous metal fibre, aramid, or polyolefin fibres.
Claim 11
Dependent Claim
42 words
A process for producing a pressure vessel by forming the vessel from a reinforcing fibre and a synthetic resin matrix by a filament winding method characterized in that the reinforcing fibre is an aromatic polyester which exhibits anisotropy in its molten state.
Claim 12
Dependent Claim
42 words
A process for producing a pressure vessel by forming the vessel from a reinforcing fibre and a synthetic resin matrix by a filament winding method characterized in that the reinforcing fibre is an aromatic polyester which exhibits anisotropy in its molten state.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.