反応式
[C:1]([OH:8])(=[O:7])/[CH:2]=[CH:3]\[C:4]([OH:6])=O.[CH3:9][C:10]([CH2:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[CH2:11]>>[C:4]1(=[O:6])[O:8][C:1](=[O:7])[CH:2]=[CH:3]1.[CH3:11][C:10]([CH2:12][C:13]([CH3:16])([CH3:15])[CH3:14])=[CH2:9]参加物
実験手順
Type A is the ammonium salt of a copolymer of maleic acid and 2,4,4-trimethylpent-1-ene obtained by ammoniacal hydrolysis of a copolymer of maleic anhydride and 2,4,4-trimethylpent-1-ene. Latter copolymer is obtainable in accordance with Example 3 of EP-A 9169. Instead of isolating the unhydrolyzed copolymer by spray drying as in Example 3 of EP-A 9169, 325 parts of water are added to the suspension and excess diisobutene is distilled off by steam distillation (bath temperature 80° C.). When an internal temperature of 98° C. is reached, steam is passed in for a further 1 h. Following the addition of a further 200 parts of water and 170 parts of 25% strength by weight ammonia, the mixture is stirred at 60° C. until a virtually clear aqueous solution is obtained (about 1 h). The solids content is then adjusted to 22% using water. The pH of the solution is 9. The K value of the copolymer (determined in accordance with Fikentscher as a 1% strength by weight solution in dimethylformamide) is in the range of 30–40.
出典と根拠
- ORDレコード
- ord-928deec0c39142a2991411859518eded
- 出典データセット
- uspto-grants-2007_02
- 特許番号
- US07176255B2
関連ノート
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