Foam compositions for surface application to fibrous substrates

Claim 2

In a composition suitable for surface application to a fibrous substrate, said composition being a foam produced by the aeration of an aqueous solution containing from 0.1 to 5 weight percent of a water-soluble salt of rosin or fortified rosin, the improvement wherein said aqueous solution has a pH of at least 8 and contains 0.02 to 5 weight percent of at least one water-soluble, amine-containing synthetic, addition or condensation type polymeric material compatible with said salt, the weight ratio of said salt to said polymeric material being within the range of 1:1 to 25:1.

Claim 3

The composition of claim 1 wherein the polymeric material is selected from the group consisting of (a) polyaminopolyamides, (b) reaction products of polyaminopolyamides with 0.02 to 0.2 mole of epihalohydrin for each secondary and/or tertiary amine group of the polyaminopolyamide, (c) poly(alkyleneimine)s and (d) addition-type polymers of ethylenically unsaturated monomers containing amine functionality.

Claim 4

The composition of claim 2 wherein the addition-type polymer is the addition polymerization product of (i) about 10 mole percent to 100 mole percent of at least one monomer selected from the group consisting of ##STR13## wherein R 1 is hydrogen or methyl, R 2 is a C 1 -C 4 alkyl, R 3 is hydrogen, a C 1 -C 4 alkyl, ##STR14## where Y is hydroxyl or halogen or ##STR15## and X is an anion; ##STR16## wherein R 3 and X - are as defined in formula (I); ##STR17## wherein R 2 , R 3 and X - are as defined in formula (I); ##STR18## wherein R 3 and X - are as defined in formula (I); ##STR19## wherein R 1 , R 2 , R 3 and X - are as defined in formula (I), and n is an integer 1, 2 or 3; and ##STR20## wherein R 1 , R 2 , R 3 and X - are as defined in formula (I), and (ii) from about 90 mole percent to 0 mole percent of at least one different ethylenically unsaturated monomer.

Claim 5

The composition of claim 2 wherein said salt is the sodium salt of a maleic anhydride adduct of rosin.

Claim 6

The composition of claim 4 wherein the polymeric material is a polyaminopolyamide.

Claim 7

The composition of claim 5 wherein the polyaminopolyamide is a condensation polymer derived from diethylenetriamine and adipic acid.

Claim 8

The composition of claim 4 wherein the polymeric material is the reaction product of a polyaminopolyamide with 0.05 mole of epichlorohydrin for each secondary and/or tertiary amine group of the polyaminopolyamide.

Claim 9

The composition of claim 4 wherein the polymeric material is poly(ethylenimine).

Claim 10

The composition of claim 2 wherein said aqueous solution also contains from 0.1 to 50 weight percent of a performance material.

Claim 11

In the process for producing a foam by aerating an aqueous solution containing 0.1 to 5 weight percent of a water soluble salt of rosin or fortified rosin, the improvement which comprises incorporating in said aqueous solution prior to aerating from 0.02 to 5 weight percent of at least one water soluble, amine-containing synthetic addition or condensation type polymeric material compatible with said salt, the weight ratio of said salt to said polymeric material being within the range of 1:1 to 25:1 and carrying out the aerating step on the resulting solution at a pH of at least 8.

Claim 12

In the process for producing a foam by aerating an aqueous solution containing 0.1 to 5 weight percent of a water soluble salt of rosin or fortified rosin, the improvement which comprises incorporating in said aqueous solution prior to aerating from 0.02 to 5 weight percent of at least one water soluble, amine-containing synthetic addition or condensation type polymeric material compatible with said salt, the weight ratio of said salt to said polymeric material being within the range of 1:1 to 25:1 and carrying out the aerating step on the resulting solution at a pH of at least 8.