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US 5,334,686 AGranted
Pressure-sensitive adhesive and adhesive sheets using the same
AssigneeNitto Denko Corporation
InventorsMasahiko Ando, Takeshi Yamanaka, Yutaka Moroishi, Yasuyuki Tokunaga, Yoshinao Kitamura
Life of this patent
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Abstract
A pressure-sensitive adhesive and adhesive sheets using the pressure-sensitive adhesive are disclosed. The pressure-sensitive adhesive comprising (a) from 50 to 84% by weight of an acrylic monomer, (b) from 15 to 28% by weight of an N,N-di-substituted (meth)acrylamide, (c) from 1 to 10% by weight of a monomer having an acid group, and (d) from 0 to 25% by weight of other monomer copolmerizable with the components (a) to (c).
Claims11
A pressure-sensitive adhesive comprising an acrylic polymer comprising the following components (a) to (d);
- (a) from 50 to 84% by weight of an acrylic monomer represented by formula (1);
- CH.sub.2 --C(R.sup.1)COO--R.sup.2 ( 1)
- wherein R.sup.1 represents hydrogen or methyl and R.sup.2 represents an alkyl group having from 4 to 14 carbon atoms,
- (b) from 15 to 28% by weight of an N,N-di-substituted (meth)acrylamide represented by formula (2);
- ##STR2## wherein R.sup.3 represents hydrogen or methyl and R.sup.4 and R.sup.5 represent an alkyl group or organic groups which combine with each other to form a heterocyclic ring with the N atom,
- (c) from 1 to 10% by weight of a monomer having an acid group, and
- (d) from 0 to 25% by weight of other monomer copolymerizable with the components (a) to (c), the total amount of the components (a) to (d) being 100% by weight.
4 more elements
Dependencies are inferred from the claim text.