Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1996-11-18
1999-02-09
Szekely, Peter A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524232, 524271, 524274, 524487, 524488, 524489, 524505, 524504, 525 74, 525 64, 525 95, 525 98, 525 99, 525210, 525211, 525216, 525240, C08K 520, C08K 501, C08L 9304, C08L 5302
Patent
active
058695559
ABSTRACT:
A polymeric composition in pellet form comprising a tacky hot melt composition, comprising a) from about 5% by weight to about 90% by weight of a thermoplastic polymer, b) from about 0% by weight to about 65% by weight of a tackifying resin, c) from about 0% to about 50% by weight of a plasticizer, d) up to about 2% by weight of an antioxidant, and a pelletizing aid, wherein the tacky hot melt composition has some minimum amount of tackifier or plasticizer and is a pressure sensitive adhesive having a storage modulus, G', at about 25.degree. C., of less than about 5.times.10.sup.6 dynes/cm.sup.2, and each pellet has a substantially tack-free surface.
This invention further discloses a polymeric composition in pellet form suitable for molding articles. The composition comprises a tacky hot melt composition comprising at least one high molecular weight triblock copolymer of the general configuration A-B-A and a plasticizer and a pelletizing aid. The pelletizing aid substantially surrounds the tacky composition such that the molded articles are substantially free from surface tack.
A method of forming the pellets is also disclosed.
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1 Page Derwent English Abstract on EP 0 575 900.
Carter Freddie C.
Farmer James R.
Lindquist Jeffrey S.
Olson Christopher E.
Simmons Eugene R.
Fischer Carolyn A.
H. B. Fuller Licensing & Financing Inc.
Quan Nancy N.
Ryan Lisa R.
Szekely Peter A.
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