A POLYMERIC COMPOSITION IN PELLET FORM

WIPO Patent Application WO1997019582

A3

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 DEG C., of less than about 5x106 dynes/cm2, 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.

SIMMONS EUGENE
SWEENEY KEVIN
LINDQUIST JEFFREY
OLSON CHRISTOPHER
CARTES FREDDIE
FARMER JAMES

PCT/US1996/018507

July 03, 1997

November 18, 1996

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FULLER H B LICENSING FINANC (US)

C08J3/12; C08J5/12; C08L23/02; C08L53/00; C08L53/02; C08L101/00; C09J5/06; C09J123/02; C09J151/00; C09J153/00; C09J153/02; C09J201/00; G06F3/039

WO1995023823A1	1995-09-08
WO1996000747A1	1996-01-11

EP0115307A2	1984-08-08
EP0410914A1	1991-01-30
US3779785A	1973-12-18
EP0575900A1	1993-12-29
GB2142255A	1985-01-16

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