Patent EP0362850B1 successfully refreshed from Google Patents.
EP0362850B1
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Block polymers and composition containing the same
Assignee: Kuraray Co Ltd
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Filing: 1989-10-05
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Granted: 1995-01-11
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Expires: 2009-10-05
Abstract
No abstract record available.
Inventors
- 👤 Miduho Maeda
- 👤 Hideo Takamatsu
- 👤 Masao Ishii
- 👤 Shobu Minatono
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:22
CPC Classifications
C; C08; C08L; C08L53/00; C08L53/02; C08F; C08F297/00; C08F297/02; C08F297/04; C08F297/046; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A block copolymer having a numerical average molecular weight of 30,000 to 300,000 composed of two or more blocks consisting of aromatic vinyl units having a numerical average molecular weight of 2500 to 40,000, and one or more blocks containing a vinyl bonding content of not less than 40%, having a peak temperature of primary dispersion of tan δ at least 0°C, and consisting of isoprene or isoprene-butadiene units in which at least a part of carbon-carbon double bonds may be hydrogenated.
Claim 2
Dependent Claim
28 words
The block copolymer according to Claim 1 wherein one or more blocks consisting of isoprene or isoprene-butadiene units have a numerical average molecular weight of 10,000 to 200,000.
Claim 3
Dependent Claim
24 words
The block copolymer according to Claim 1 wherein the blocks consisting of aromatic vinyl units have a proportion of 5 to 50% by weight.
Claim 4
Dependent Claim
49 words
The block copolymer according to Claim 1 wherein the sequences of blocks is A(BA) n or (AB) n , in which A is a block consisting of aromatic vinyl units, B is a block consisting of isoprene or isoprene-butadiene unit, and n is an integer of one or more.
Claim 5
Dependent Claim
30 words
The block copolymer according to Claim 1 wherein the carbon-carbon double bonds in the blocks consisting of isoprene or isoprene-butadiene units are hydrogenated at a proportion of at least 50%.
Claim 6
Dependent Claim
109 words
A composition consisting of 100 parts by weight of a block copolymer having a numerical average molecular weight of 30,000 to 300,000 composed of two or more blocks consisting of aromatic vinyl units having a numerical average molecular weight of 2500 to 40,000, and one or more blocks containing a vinyl bonding content of not less than 40%, having a peak temperature of primary dispersion of tan δ at least 0°C, and consisting of isoprene or isoprene-butadiene units in which at least a part of carbon-carbon double bonds may be hydrogenated, and 5 to 250 parts by weight of a tackifier having a softeneing temperature of at least 30°C.
Claim 7
Dependent Claim
87 words
A vibration-damping material which comprises a block copolymer having a numerical average molecular weight of 30,000 to 300,000 composed of two or more blocks consisting of aromatic vinyl units having a numerical average molecular weight of 2500 to 40,000, and one or more blocks containing a vinyl bonding content of not less than 40%, having a peak temperature of primary dispersion of tan δ at least 0°C, and consisting of isoprene or isoprene-butadiene units in which at least a part of carbon-carbon double bonds may be hydrogenated.
Claim 8
Dependent Claim
92 words
A support having a layer of a material which comprises a block copolymer having a numerical average molecular Weight of 30,000 to 300,000 composed of two or more blocks consisting of aromatic vinyl units having a numerical average molecular weight of 2500 to 40,000, and one or more blocks containing a vinyl bonding content of not less than 40%, having a peak temperature of primary dispersion of tan δ at least 0°C, and consisting of isoprene or isoprene-butadiene units in which at least a part of carbon-carbon double bonds may be hydrogenated.
Claim 9
Dependent Claim
97 words
A sandwich structure which comprises two support plates and sandwiched therebetween a material which comprises a block copolymer having a numerical average molecular weight of 30,000 to 300,000 composed of two or more blocks consisting of aromatic vinyl units having a numerical average molecular weight of 2500 to 40,000, and one or more blocks containing a vinyl bonding content of not less than 40%, having a peak temperature of primary dispersion of tan δ at least 0°C, and consisting of isoprene or isoprene-butadiene units in which at least a part of carbon-carbon double bonds may be hydrogenated.
References Cited (Backward Citations)
No citation records indexed.
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