Patent ID: 9421723
Filing Date: 2016-08-23
CPC Classification: B01J,B29D,B29K,B60C,C08K,C08L

Claim Text:
1. A gel composition suitable for balancing tires consisting essentially of: 1) a glycol ether component comprising a mixture of ethylene/propylene glycol copolymer ethers of the general formula (I) and the general formula (II): 2) a fumed silica gel former; said gel composition being visco-elastic and having a Storage Modulus (G′) between 1500 Pa and 5000 Pa at 22° C., a Loss Modulus (G″) smaller than the Storage Modulus up to a Cross Over Frequency of 10-40 Hz, and a Critical Yield Stress exceeding 2 Pa, wherein the ethylene/propylene glycol copolymer ether of the general formula (I) has a n:m ratio in the range from 40:60 to 60:40 and the ethylene/propylene glycol copolymer ether of the general formula (II) having a n:m ratio from 70:30 to 80:20 is present in the composition (a) in an amount of 1% by weight of the gel composition and the fumed silica gel former is present in an amount in the range from 6 to 6.7% by weight or (b) in an amount of 2% by weight and the fumed silica gel former is present in an amount in the range from 5 to 6.5% by weight.