C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 167/04 (2006.01) C09J 5/00 (2006.01) C09J 11/08 (2006.01) C09J 167/06 (2006.01)
Patent
CA 2195787
The present invention provides pressure sensitive adhesives, compositions from which the pressure sensitive adhesives are formed, and articles having therein these pressure sensitive adhesives. The pressure sensitive adhesives, which have a Tg of less than about 20 ~C, include a poly(.beta.-hydroxyorganoate) or mixture thereof. Preferably, these poly(.beta.-hydroxyorganoate)s include monomeric units of general formula (I), wherein a minor amount (preferably no greater than about 20 mole percent) of the monomeric units have an R group containing 1-3 carbon atoms; and a major amount (preferably at least about 80 mole percent) of the monomeric units have an R group containing 4-30 (preferably 4-20) carbon atoms.
La présente invention concerne des compositions auto-adhésives et des compositions à partir desquelles ces auto-adhésifs sont formés, ainsi que des articles comportant ces auto-adhésifs. Les auto-adhésifs, dont la température de transformation est inférieure à 20 ~C, comprennent un poly(.beta.-hydroxyorganoate) ou un mélange de ce dernier. De préférence, ces poly(.beta.-hydroxyorganoate)s comprennent des unités monomères présentant la formule générale (I) où une quantité mineure (de préférence, non supérieure à 20 moles pour cent) des unités monomères comporte un groupe R contenant 1-3 atomes de carbone; et une quantité majeure (de préférence, au moins 80 moles pour cent environ) des unités monomères présente un groupe R contenant 4-30 atomes de carbone (de préférence, 4-20).
Babu Gaddam N.
Hammar W. James
Rutherford Denise R.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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