Nonionic emulsifiers

{
  "publication_number": "US5631357A",
  "country": "US",
  "kind": "A",
  "title": "Nonionic emulsifiers",
  "abstract": "PCT No. PCT/EP94/01552 Sec. 371 Date Jan. 26, 1996 Sec. 102(e) Date Jan. 26, 1996 PCT Filed May 13, 1994 PCT Pub. No. WO94/28006 PCT Pub. Date Dec. 8, 1994A process for making nonionic emulsifiers involving the steps of: (a) performing an acid-catalyzed acetalization reaction on a mixture of (i) sugars or water-containing starch degradation products and (ii) primary alcohols in a molar ratio of (i):(ii) of from 1:2 to 1:8; (b) terminating the reaction at a conversion ranging from 60% to 90% of the theoretical to form a reaction product; (c) neutralizing the reaction product to form a neutralized reaction product; and (d) purifying the neutralized reaction product by back-mixing the product through at least one coarse filter until the product becomes clear.",
  "claims": [
    "1. A process for making nonionic emulsifiers comprising: (a) performing an acid-catalyzed acetalization reaction on a mixture of (i) sugars or water-containing starch degradation products and (ii) primary alcohols in a molar ratio of (i):(ii) of from 1:2 to 1:8; (b) terminating said reaction at a conversion ranging from 60 to 90% of the theoretical to form a reaction product; (c) neutralizing said reaction product to form a neutralized reaction product; and (d) purifying said neutralized reaction product by back-mixing said product through at least one coarse filter until said product becomes clear.",
    "2. The process of claim 1 wherein said sugars comprise glucose.",
    "3. The process of claim 1 wherein said primary alcohols correspond to formula (I): R.sup.1 --OH (I) wherein R 1 is selected from the group consisting of a linear alkyl radical containing from 12 to 22 carbon atoms, a branched alkyl radical containing from 12 to 22 carbon atoms, a linear alkenyl radical containing from 12 to 22 carbon atoms, a branched alkenyl radical containing from 12 to 22 carbon atoms, and mixtures thereof.",
    "4. The process of claim 1 wherein said step (d) is performed at a temperature ranging from 70° C. to 95° C.",
    "5. The process of claim 1 wherein said molar ratio of (i):(ii) is from 1:2.5 to 1:4.",
    "6. The process of claim 1 wherein said water-containing starch degradation products comprise glucose syrup having a solids content of from 70% to 90% by weight, and a monoglucose content of from 90% to 99% by weight, all weights being based on the weight of said glucose syrup.",
    "7. The process of claim 1 wherein said primary alcohols comprise fatty alcohols having from 16 to 18 carbon atoms.",
    "8. The process of claim 1 wherein said step (a) is performed at a temperature ranging from 100° C. to 110° C. and a pressure of 20 mbar.",
    "9. The process of claim 1 wherein said neutralized reaction product of said step (c) has a pH of from 6 to 7.",
    "10. The process of claim 1 wherein multiple coarse filters are employed in said step (d)."
  ],
  "cpc": [
    "A61K 8/602",
    "A61K 8/06",
    "A61Q 19/10",
    "A61Q 5/02",
    "C07H 15/04",
    "C09K 23/38",
    "C09K 23/56"
  ],
  "assignees": [
    "HENKEL KGAA"
  ],
  "filing_date": "1994-05-13",
  "publication_date": "1997-05-20",
  "grant_date": "1997-05-20",
  "priority_date": "1993-05-21",
  "application_number": "US-55331396-A",
  "family_id": "6488690",
  "citations": [
    "DE4033928A1",
    "EP0165721A1",
    "EP0492397A1",
    "WO9206778A1",
    "WO9310133A1"
  ]
}