Title:
【発明の名称】ラジアルスチレン-イソプロピレン-ブタジエン多肢ブロックコポリマー及び組成物及びコポリマーを含有する物
Document Type and Number:
Japanese Patent JP3438894
Kind Code:
B2
Abstract:
The invention is drawn to radial block copolymers of the formula: (pS-pI-pB)nX wherein pS is polystyrene, pI is polyisoprene, pB is polybutadiene, X is the residue of a multifunctional coupling agent used in the production of the radial block copolymer, and n is a number greater than or equal to 3 representative of the number of branches appended to X; pressure sensitive adhesive compositions comprising such radial block copolymers and articles of manufacture produced therefrom. The pS component of the radial block copolymers of this invention comprise from about 14 to about 24 parts per 100 parts by weight of the radial block copolymer; the molecular weight (as polystyrene equivalent) of the radial block copolymer is between about 200,000 to about 400,000; and the weight amount of polybutadiene in the pI-pB segment is less than 50 weight percent.
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Inventors:
Tank Blade, Gene M
Deal, Charles F
Marchand Gary Earl
Deal, Charles F
Marchand Gary Earl
Application Number:
JP51519095A
Publication Date:
August 18, 2003
Filing Date:
November 21, 1994
Export Citation:
Assignee:
The Dow Chemical Company
ExxonMobil Chemical Patents, Inc.
ExxonMobil Chemical Patents, Inc.
International Classes:
A61F13/58; A61L15/58; B32B7/12; C08F8/42; C08F297/04; C08G81/02; C09J7/02; C09J153/02; (IPC1-7): C08F297/04; C08F8/42; C09J7/02; C09J153/02
Domestic Patent References:
| JP6107745A |
Attorney, Agent or Firm:
Kozo Yamazaki