Patent EP0174713A2 successfully refreshed from Google Patents.
EP0174713A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Low modulus thermoplastic elastomers
Assignee: Tohoku University
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Filing: 1985-06-05
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Granted: —
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Expires: 2005-06-05
Abstract
Abstract Polyester-polysiloxane block copolymers for dental uses are disclosed as low modulus thermoplastic elastomers. The copolymers comprise polycaprolactone residues and poly-(dimethylsiloxane) α. ω-diol residues which are linked by ether bonds. The compounds exhibit the property of plasticity by heating and the property of original rubber elasticity by cooling again to room temperature.
Inventors
- 👤 Michio Kawakami
- 👤 Yoshima Araki
- 👤 Kenkichi Murakami
- 👤 Hidetoshi Oikawa
- 👤 Michio Nakanishi
- 👤 Makoto Hosotani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 19:36
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/445; A; A61; A61K; A61K6/00; A61K6/90
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
83 words
A polyester-polysiloxane block copolymer represented by the following general formula wherein R 1 is a polymerization initiator residue of ε-caprolactone, the said polymerization initiator being a compound having two or more active hydrogens and producing two or more terminal OH, R 2 are polymerization initiator residues of e-caprolactone, the polymerization initiator being a compound having an active hydrogen and producing a terminal OH, and n 1 , n 2 , n 3 , n 4 and m are, respectively, numbers of structural units.
Claim 2
Dependent Claim
83 words
A polyester-polysiloxane block copolymer represented by the following general formula wherein R 1 is a polymerization initiator residue of ε-caprolactone, the said polymerization initiator being a compound having two or more active hydrogens and producing two or more terminal OH, R 2 are polymerization initiator residues of e-caprolactone, the polymerization initiator being a compound having an active hydrogen and producing a terminal OH, and n 1 , n 2 , n 3 , n 4 and m are, respectively, numbers of structural units.
Claim 3
Dependent Claim
20 words
Use of a block copolymer as claimed in claim 1 as a dental impression material, mold material or sealing material.
References Cited (Backward Citations)
No citation records indexed.
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