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| The present invention is based upon the discoveries of the gene coding for the enzyme N-... |
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| What is claimed is: 1. An isolated DNA comprising a nucleotide sequence obtainable from gene Y ... |
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Delayed-gelling, post-foaming composition based upon alkoxylated alkyl phosphate ester surfactants
| Details |
Inventors: Chaussee, James G.;
Assignee: S. C. Johnson & Son, Inc. (Racine, WI)
Primary Examiner: Lieberman; Paul
Assistant Examiner: Higgins; Erin
Attorney, Agent or Firm:
A delayed-gelling, post-foaming gel composition which is dispensed from an aerosol or piston container in the form of a liquid and remains as a liquid for a predetermined period of time before it sets up into a gel. |
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DETAILED DESCRIPTION What is claimed is: 1.
A delayed-gelling, post-foaming composition which comprises: (a) from about 15 to 30 weight percent of an anionic alkoxylated alkyl phosphate ester surfactant having the general formula ##STR3## wherein R.
sub.
1 is an alkyl group having about 8 to 18 carbon atoms, (OR.
sub.
2) is an ethoxy or a propoxy group, and n is from about 1 to 10; (b) a sufficient amount of a neutralizing agent to provide a pH for the composition of from about 4.
5 to 8; (c) from about 0.
5 to 15 weight percent of a post-foaming agent selected from the group consisting of at least one higher hydrocarbon having between 5 to 8 carbon atoms and a mixture of at least one lower hydrocarbon having up to 4 carbon atoms and at least one higher hydrocarbon having between 5 to 8 carbon atoms; and (d) the balance comprising water, wherein the composition is dispensed from a container in the form of a liquid and remains as a liquid for a predetermined period of time before it sets up into a gel.
2.
A delayed-gelling, post-foaming composition according to claim 1, wherein R.
sub.
1 is an alkyl group having 10 to 16 carbon atoms.
3.
A delayed-gelling, post-foaming composition according to claim 2, wherein R.
sub.
1 is an alkyl group having 10 to 14 carbon atoms.
4.
A delayed-gelling, post-foaming composition according to claim 1, wherein (OR.
sub.
2) is an ethoxy group.
5.
A delayed-gelling, post-foaming composition according to claim 2, wherein n is from about 1 to 6 moles.
6.
A delayed-gelling, post--foaming composition according to claim 1, wherein said neutralizing agent is selected from the group consisting of an organic amine, sodium hydroxide or ammonium hydroxide.
7.
A delayed-gelling, post-foaming composition according to claim 1, wherein said neutralizing agent is triethanolamine.
8.
A delayed-gelling, post-foaming composition according to claim 1, wherein said neutralizing agent is present in an amount sufficient to provide a pH from about 5 to 6.
5.
9.
A delayed-gelling, post-foaming composition according to claim 1, wherein said hydrocarbon post-foaming agent is selected from a mixture at least one lower hydrocarbon having up to 4 carbon atoms and at least one higher hydrocarbon having between 5 to 8 carbon atoms
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Drugs 
