Polyurethaneurea system
First Claim
1. A tire for a vehicle, comprising:
- an inner liner having an elastomer content that is in majority a butyl based rubber;
a patch bonded to the inner liner, the patch having a bonding surface having an elastomer content that is in majority a diene rubber;
a polyurethaneurea adhesive bonding the bonding surface of the patch to the inner liner, the polyurethaneurea adhesive is the reaction product of reaction components, the reaction components comprising;
part A, wherein part A is a mixture comprising;
between about 55 and about 75 wt. % of an oligomeric polyol having an average molecular weight greater than about 1000 wherein greater than 75 wt. % of the oligomeric polyols is primary oligomeric polyol;
between about 3 and about 7 wt. % of an aromatic diamine chain extender; and
between about 0.1 and about 1.5 wt. % of a reactivity catalyst; and
part B, wherein part B is a mixture comprising;
between about 1 and about 15 wt. % of a short aromatic diisocyanate; and
between about 5 and about 35 wt. % of an aromatic diisocyanate prepolymer that is the reaction product of a short aromatic diisocyanate and a diol, wherein the mass fraction of each of the reaction components is based upon the total mass of the part A and part B reaction components.
2 Assignments
0 Petitions
Accused Products
Abstract
A polyurethaneurea system that includes in some embodiments Parts A and B reaction components for a polyurethaneurea, wherein an exemplary embodiment provides a Part A that comprises between 55 and 75 wt. % of an oligomeric polyol, between 3 and 7 wt. % of an aromatic diamine chain extender, and between 0.1 and 1.5% of a reactivity catalyst; Part B includes between 1 and 15 wt. % of a short aromatic diisocyanate and between 5 and 35 wt. % of an aromatic diisocyanate prepolymer that is the reaction product of a short aromatic diisocyanate and a diol. The polyurethaneurea system may further comprise an elastomer-surface activator comprising a second short aromatic diisocyanate and a second aromatic diisocyanate prepolymer, wherein at least one of the second diisocyanates may be the same as at least one of the diisocyanates of Part B.
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Citations
19 Claims
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1. A tire for a vehicle, comprising:
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an inner liner having an elastomer content that is in majority a butyl based rubber; a patch bonded to the inner liner, the patch having a bonding surface having an elastomer content that is in majority a diene rubber; a polyurethaneurea adhesive bonding the bonding surface of the patch to the inner liner, the polyurethaneurea adhesive is the reaction product of reaction components, the reaction components comprising; part A, wherein part A is a mixture comprising; between about 55 and about 75 wt. % of an oligomeric polyol having an average molecular weight greater than about 1000 wherein greater than 75 wt. % of the oligomeric polyols is primary oligomeric polyol; between about 3 and about 7 wt. % of an aromatic diamine chain extender; and between about 0.1 and about 1.5 wt. % of a reactivity catalyst; and part B, wherein part B is a mixture comprising; between about 1 and about 15 wt. % of a short aromatic diisocyanate; and between about 5 and about 35 wt. % of an aromatic diisocyanate prepolymer that is the reaction product of a short aromatic diisocyanate and a diol, wherein the mass fraction of each of the reaction components is based upon the total mass of the part A and part B reaction components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification