Nonagglomerating antifoamants
    1.
    发明授权
    Nonagglomerating antifoamants 失效
    非团聚消泡剂

    公开(公告)号:US5681692A

    公开(公告)日:1997-10-28

    申请号:US594611

    申请日:1996-02-02

    摘要: The invention relates to a solution for forming silver halide emulsions comprising water, a gelatin containing less than 30 micromoles of methionine per gram of gelatin, and at least one antifoamant selected from the group consisting of RCO.sub.2 (CH.sub.2 CH.sub.2 O).sub.x OCR (I) wherein RC and CR represent the carbon chain in carboxylic acids with chain lengths of predominantly 12-18 carbon atoms, x has a mean value of 4 to 5 from a mixture with a distribution of values between 2 and 7, and (H.sub.3 CSi) �(OSi (CH.sub.3).sub.2).sub.d O-- (CH.sub.2 CH.sub.2 CH.sub.2 O--).sub.n C.sub.4 H.sub.9 !.sub.3 (II) wherein the molecular weight is 2500 to 3500 and d and n have average values of less than 15.

    摘要翻译: 本发明涉及用于形成卤化银乳剂的溶液,其包含水,每克明胶中含有少于30微摩尔甲硫氨酸的明胶和至少一种选自下组的消泡剂:RCO 2(CH 2 CH 2 O)x OCR(I),其中RC和 CR表示链长度主要为12-18个碳原子的羧酸中的碳链,x从2到7之间的分布的混合物的平均值为4至5,和(H3CSi)[(OSi(CH3 )2)dO-(CH 2 CH 2 CH 2 O-)nC 4 H 9] 3(II)其中分子量为2500〜3500,d和n的平均值小于15。