Pressure sensitive adhesive comprising a block copolymer having

Details Pressure sensitive adhesive comprising a block copolymer having Pressure sensitive adhesive comprising a block copolymer having

1996-12-09

1998-06-30

Szekely, Peter A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524271, 524274, 524474, 524484, 524499, 524575, 525 97, C08L 9304, C08L 5302, C08L 5702, C08K 501

Patent

active

057735069

ABSTRACT:
The present invention provides a block copolymer pressure sensitive adhesive (PSA) composition. The block copolymer has at least one midblock segment and at least one endblock segment. The midblock comprises a polymerized conjugated diene segment or hydrogenated derivative thereof. The endblock comprises a polymerized monovinyl aromatic segment having a number average molecular weight less than about 8,000. The PSA further comprises at least one tackifier or oil that is compatible with the low molecular weight endblock segment of the block copolymer. The PSA composition of the invention has a reduced elastic index and is capable of dissipating stress. This is useful in providing tapes which are capable of withstanding stresses such as those caused by temperature fluctuations, dimensional changes in the backing, or the recovery forces of a backing applied under tension. The present invention also provides a method of reducing the elastic index of a block copolymer PSA composition.

REFERENCES:
patent: 3239478 (1966-03-01), Harlan, Jr.
patent: 3639517 (1972-02-01), Kitchen et al.
patent: 3917607 (1975-11-01), Crossland et al.
patent: 3932328 (1976-01-01), Korpman
patent: 3985830 (1976-10-01), Fetters et al.
patent: 4028292 (1977-06-01), Korpman
patent: 4104327 (1978-08-01), Inoue et al.
patent: 4125665 (1978-11-01), Bemmels et al.
patent: 4136071 (1979-01-01), Korpman
patent: 4221884 (1980-09-01), Bi et al.
patent: 4250272 (1981-02-01), Ewins, Jr. et al.
patent: 4296008 (1981-10-01), St. Clair et al.
patent: 4391949 (1983-07-01), St. Clair
patent: 4399249 (1983-08-01), Bildusas
patent: 4418123 (1983-11-01), Bunnelle et al.
patent: 4444953 (1984-04-01), St. Clair
patent: 4556464 (1985-12-01), St. Clair
patent: 4683268 (1987-07-01), Ahner
patent: 4699938 (1987-10-01), Minamizaki et al.
patent: 4780367 (1988-10-01), Lau et al.
patent: 4939208 (1990-07-01), Lanza et al.
patent: 4959412 (1990-09-01), Arter et al.
patent: 5037411 (1991-08-01), Malcolm et al.
patent: 5118762 (1992-06-01), Chin
patent: 5290842 (1994-03-01), Sasaki et al.
patent: 5296547 (1994-03-01), Nestegard et al.
patent: 5342858 (1994-08-01), Litchholt et al.
patent: 5393787 (1995-02-01), Nestegard et al.

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