CA1132308A - Method for treating fabrics - Google Patents

Abstract

Abstract of the Disclosure Foamable fabric treatment compositions are disclosed which are composed of a fabric finishing agent and a foam stabilizer, which compositions are capable of forming a foam having a blow ratio in the range from about 2:1 to 20:1 and a foam density range from about 0.5 gm/cc to 0.05 gm/cc. Methods for preparing and using the foamable compositions are disclosed.
Included in the composition is up to about 10percent of foam stabilizer.

Description

1J 323~8 BACKGROUND OF l~HE INVENTION
This invention relates to the field of treating textile fabrics with fabric finishing agents. More particularly, this invention relates to a novel method of application of fabric fin-ishing agents to textile fabrics.
Conventionally, the treating of textile fabrics with finishing agents, e.g., coloring agents or dyes, resins, and the like, has always involved a procedure wherein the finishing agent is either dissolved or dispersed in a suitable liquid medium, such as, an aqueous or organic liquid, and then the mixture of the finishing agent and liquid medium are applied to the fabric.
Thereafter, the carrier is removed from the fabric, usually by evaporation with or without heat. It is further conventional to use small amounts of the finishing agent, relative to the amount of liquid medium in order to conserve the amount of the finishing agent used. This results in the problem that relatively large amounts of liquid medium must be removed from the fabric. Conse-quently, a substantial amount of the cost incurred in such pro-cesses resides in the liquid medium removal step.
Such liquid media present a further problem in that after they are removed, they must either be disposed of or recov-ered for re-use. In the case of an aqueous treatment system wherein the liquid media is water, the water is normally disposed of as waste. In recent years, the environmental problems that related to the disposal of the water with residual finishing agents therein have become increasingly important.

1 With respect to organic solvents as the liquid medium,

2 it is normally desirable to recover them because of their

3 relatively hish cost. Obviously, such recovery systems only

4 add to the expense of the over all treatment process. Moreover, disposal of the solvent, if it is desired not to recover it, 6 also presents environmental problems.
7 The foregoing problems become even more severe when 8 ! textile fabrics which are highly absorbent are treated. Thus, 9 ! for example, when it is desired to treat or finish pile fabrics, I e.g., carpeting, sliver knit fabrics, and the like, the fabrics 11 absorb great quantities of the water or organic solvent, thus 12 making the solvent removal step even more difficult and 13 expensive. Additionally, because of the relatively large 14 ~ absorption of the liquid, the weight of the wet fabric which is ¦ being handled increases significantly, and often results in 16 processing problems.
17 SU~ARY OP THE INVENTION
.
18 ! We have discovered a method for treating and finishing 19 textile fabrics with fabric finishing agents which substantially reduces the problems caused by the large amount of liquid medium 21 utilized in the conventional processes. Particularly, we have 22 discovered that by incorporating an amount of the finishing agent 23 ¦which is effective to produce the desired finishing effect on the 24 fabric, in a foamable material which is capable of forming a foam having a blow ratio in the range from about 2:1 to 20:1, the 26 agent may be applied utilizing substantially less liquid medium 27 than that conventionally used. Generally, the composition of 28 the present invention contains from about 0.001 to 95 weight 29 percent of a fabric finishing agent, and up to about 10 weight 3o percent of a foam stabilizer, the remainder of the composition i -~13~30~3 1 ~jbeing essentially the liquid medium and other conventional 2 ¦1 additives. All weights used herein are based on the total weight 3 ¦ of composition before foaming.

4 ¦ The composition is utilized by first converting it into a foam by conventional procedures, and then coating the foamed 6 composition onto the fabric. Thereafter, the coated fabric is 7 compressed, padded or vacuumed to assure complete penetration of 8 ~e foam through the fabric and it is then subjected to a drying 9 ¦and any conventlonal curing or ixation steps desired, depending ¦on the nature of the finishing agent.
By virtue of the use of the foamable composition of the 12 ¦Ipresent invention in the manner described above, the amount of 13 ¦1 liquid coated onto the fabric is substantially less, relative to 14 ¦ the amount of finishing agent on the fabric. Consequently, the amount 15 ~ f liquid to be removed from the fabric is significantly 16 decreased as are the problems associated with absorption of the 17 ~liquid by the fabric.

19 ¦ The figure is a schematic diagram of a process in accordance with the present invention.
21 DESCRI~TION OF THE PREFERRED EMBODIMENT
22 I Referring to the figure, shown generally at 10, is a roll 23 f fabric travelling in the direction indicated by arrow "A".
24 The fabric is conveyed onto conveyor 12 which may be any type of conveying means conventionally used in the art, e.g., an endless 26 conveying belt, a tenter frame, etc.
27 Simultaneously, in mixing tank 14, the composition in 28 accordance with the present invention i.e., the finishing agent, 29 foam stabilizer, and liquid diluent, i.e., organic solvent, 3o l water or dispersing liquid, is foamed by the use of mixer 16.

1~ _4_ Il 11323~

1 ~ M er 16 may be any type ~oaming device conventionally used in 2 the art, e.g., Oakes, Godwin card, etc.
3 The composition, after foaming, is transferred through 4 line 18 by pump 20 to knife 22. At this point, the foamed mixture is coated onto the fabric to produce a coated fabric designated 6 as 24. The coated fabric then goes through nip rolls 26 and 28 7 which serve to compress the foamed composition and insure that it 8 penetrates throughout the fabric. Typically, rolls 26 and 28 are 9 of a rubber or elastomeric material. Alternately, a vacuum may ~O be applied either in conjunction with or independent of the rolls 11 to the bottom side of the fabric to draw the foam through the 12 fabric. This penetration step also destroys the bubbles of the 13 foam and assures uniform penetration and application of the 14 finishing agent. Thereafter, the completely impregnated fabric ic conveyed through a drying and curing means which are any of those 16 conventionally known in the art and designated as 30. The cured 17 fabric is then wound on to take-up roll 32.
18 As used herein, the term "finishing agent" is intended to 19 collectively include both coloring agents e.g., dyes, pigments and the like, color developers, e.g., acid developers for rapid-21 ogen colors, as well as agents which are used to treat fabrics 22 to impart various properties to the fabric, e.g., water repell-23 ants, antistatic agents, weighting agents, durable press agents, 24 soild release agents, softening agents, fire retardant agents, hand builders and the like. These finishing agents are conven-26 tionally used in the art and the pa-ticular processin~ conditions, 27 e.g., temperatures, pressures, specific preferred agent concen-28 trations, drying times, and temperatures, fixation or curing 29 temperatures, etc., utilized with the various type finishing 3o agents are well known to the skilled art worker, .

~ 113Z30~

1 Thus~ the particular finishi~g agent used in the present 2 process is not particularly important, so long as it is one which 3 is conventionally applied to fabric using a liquid medium as 4 described hereinabove. All of such finishing agents are susceptible to application by the present process and incorpora-6 tion into the present composition.
7 The amount of the finishing agent used will, of course, 8 depend on the particular finishing agent and the desired effect.
9 It is only necessary to use an amount of the finishing agent which is effective to produce the desired result. This amount 11 may be determined by the skilled artisan.
12 The present process and composition may be used to finish 13 all types and classes of fabrics and is particularly advantageous 14 for those fabrics which exhibit a high wet pick-up, e.g., pile fabrics, including sliver knit fabrics, carpets, flocked fabric, 16 napped fabric, and the like, and double knit fabrics.
17 In the description that follows, all weight percents 18 are based on the total weight of the composition. For dyeing 19 purposes, the foamable composition of the present invention may be prepared by mixing from about 0.001 to 15 weight percent, and 21 preferably from about 0.01 to 10 weight percent, of one or more 22 coloring agents with up to about lOweight percent, and preferably 23 fromabout 0.01 to 5 weight percent of a foam stabilizer, with a 24 liquid medium, such as, water, or an organic solvent. Generally, the remainder of the mixture is the liquid medium, although 26 other additives conventional in the art may be utilized.
27 As used herein, the term "coloring agent" includes dye-28 stuffs, pigments, and other materials which are conventionally 29 used to impart co}or to textile fabrics. Typically, all classes 3o of dyestuffs may be used, e.g., dispersed dyes, cationic dyes, 113;~308 1 I direct dyes, reactive dyes, acid dyes, piq~ents, and blend~
2 ¦ thereof.
3 I When the particular finishing operation is a dyeing 4 ¦ procedure, additives, e.g., dye carriers, solvents, thickeners, ~ softeners, urea, sodium carbonate, sodium bicarbonate, and other 6 dyeing auxiliaries and combinations of these materials may be 7 ¦ used.
8 ¦ For water repellent treatments, the foamable composition 9 I may be prepared by mixing from ahout 2 to 15 weight percent, and l ¦ preferably from about 4 to 9 weight percent of a water proofing ll I agent and up to about 5 weight percent, preferably from 0.01 to 3 12 weight percent of a foam stabilizer with a carrier, such as, 13 water, or an organic solvent. Here again, the remainder of the 14 mixture is essentially the liquid medium, but other conventional ingredients, e.g., stabilizers, catalysts, softeners, resins, 16 hand buildérs, thickeners, etc., may be added.
17 Suitable water proofing resins for use in the present 18 invention include fluorochemical water repellants, silicone 19 water rèpellents, metal complexes, waxes, and other hydrophobic agents conventionally used for rendering fabrics water repellent, 21 i e.g., fatty acid salts or polyvalent metal cations, and the like.
22 For antistat finishes, a foamable composition may be 23 prepared by mixing from 0.5 to lO weight percent and, preferably, 24 from about 0.5 to 5 weight percent of an antistat agent and up to about 5 weight percent, preferably, from 0.01 to 3 weight 26 percent of a foam stabilizer with a carrier such as, water or an 27 organic solvent. Here again, the remainder of the mixture is 28 ¦lessentially the liquid medium but other conventional ingredients, 29 e.g., stabilizers, resins, thickeners, catalysts, softeners, 3o hand builders, etc., may be added.

~ ~7 11~2308 l ¦~ Suitable antistat agents include polyethoxy compoun~s, 2 1 quarternary ammonium compounds, and other cationic compounds, 3 ~ ester compounds, poly carboxylic compounds, polyhydroxy compounds, 4 I and other anionic compounds, natural gums, starches, starch

5 ¦ derivatives, cellulose derivatives, synthetic polymeric compound

6 ¦¦ and blends of these compounds.

7 ¦ For the application of weighting agents, a foamable

8 composition may be prepared by mixing from about 0.5 to 15 weight

9 percent, preferably, from 0.5 to 10 weight percent of a l~ ' conventional weighter and up to about 5 weight percent, ll ¦ preferably, from O.Olto 3 weight percent of a foam stabilizer, 12 ¦I with a carrier or diluent such as water or an organic solvent~
13 ¦¦ Here again, the remainder of the mixture is essentially a liquid 14 1¦ medium, but other conventional ingredients, e.g., stabilizers, ¦ resins, thickeners, catalysts, softeners, hand builders and the i like may be added.
17 Suitable weighters include natural gums, starch, starch 18 ¦ derivatives, cellulose derivatives, polyesters, polyoxyethylene 19 1 compounds~ acrylic polymer emulsions, synthetic polymeric I compounds and blends of these compounds.
2~ ¦ For durable press finishing, a foamable composition may 22 ¦ be prepared by mixing from lO to 60 weight percent, preferably, 23 ¦ from about 20 to 40 weight percent of a durable press resin and 24 up to about lO weight percent, preferably, from 0.01 to 5 weight percent of a foam stabilizer with a carrier such as, water or an 26 organic solvent. Here again, the remainder of the mixture is 27 essentially the liquid medium, but other conventional ingredients 28 e.g., stabilizers, catalysts, softeners, hand builders, wetting 29 agents, thickeners, soil releasing agents, etc., may be added.

113~308 1 ~ Suitable durable press resins inclu~e dimethylol 2 ~ dihydroxy ethylene urea resins, triazone formaldehyde resins, 3 1 urea formaldehyde resins, ethylene urea formaldehyde resins, 4 glyoxal resins, propylene urea formaldehyde resins, carbamate resins, melamine formaldehyde resins, other N-Methylol resins, 6 N-Methylol ether resins and blends of these resins.
7 For application of a soil release finish, a foamable 8 1 composition may be prepared by mixing from 0.5 to 15 weight 9 1 percent and preferably from 0.5 to 10 weight percent of a soil release agent, and up to about 10 weight percent, preferably 11 from 0.01 to 5 weight percent of a foam stabilizer with a carrier 12 ~such as, water or an organic solvent. If a soil release treatment 13 lis carried out in conjunction with durable press finishing, a 4 ¦~foamable~ composition may be prepared by mixing from about 0.5 to 15 1115 weight percent, preferably 0.5 to 10 weight percent, of a soil 16 l¦releasing agent, from about 10 to 60 weight percent, preferably 17 i! from 20 to 40 weight percent, of a durable press resin and up to 18 ¦ about 10 weight percent, preferably 0.01 to 5 weight percent, of a 19 1 foam stabilizer with a carrier such as, water or an organic solvent.
21 Here again, the remainder of the mixture consists 22 essentially of the liquid medium, but other conventional ingred-23 ients, e.g., stabilizers, resins, catalysts, softeners, hand 24 builders, wetting agents, thic~eners, etc., may be added.
Suitable soil releasing agents i~clude poly-carboxylic 26 1 compounds, poly-oxyethylene compounds, polyhydroxy compounds, 27 acrylic polymer emulsions, natural gums, resins, starches, starch 28 derivatives, cellulose derivatives, synthetic polymeric compounds, 29 and blends of these compounds.

, : .

1~
~l l 1 For a flame retardant finish, a foamable composition may 2 be prepared by mixing from about 5 to 95 weight percent, 3 preferably, from 10 to 95 weight percent of a flame retardant and 4 up to about lOweight percent, preferably from 0.01 to 5 weight percent, of a foam stabilizer with a carrier such as, water or 6 an organic solvent. The remainder of the mixture is essentially 7 the liquid medium, but eonventional ingredients, e.g., stabilizers , 8 eatalysts, resins, softeners, harld builders, ete., may be added.
9 Suitable flame retardants include tris-dibromopropyl phosphate, tetrakis-hydroxymethyl phosphonium eompounds, 11 N-methylol phosphonamides, organo-phosphorous eompounds, nitrogen 12 eompounds, phosphorous eompounds, antimony eompounds, bromine 13 eontaining eompounds, other organie and inorganic flame retar-14 dants and blends of these compounds.
As is clear from the foregoing, the specific types of 16 finishing agents as well as the additives are conventional in 17 the art.
18 Suitable foam stabilizers whieh can be used in the present 19 eomposition include metal salts of fatty acids, e.g., potassium stearate, ammonium salts of fatty acids, e.g., ammonium stearate, 21 sodium lauryl sulfate, eoeonut oil diethanol amide, disodium 22 N-octadeeyl sulfo suceinamide, ethoxylated dialkyl silieones, 23 glyeol polysiloxanes, fatty acid esters, and blends of these 24 materials.
Further stablization of the foam may be achieved by the 26 addition of thickeners, e.g., polyacrylic acid, co-polymers of 27 aerylie aeid, polyvinyl alcohol, natural gums, starehes, stareh 28 derivatives, eellulose derivatives, synthetie polymeric eompounds, 29 water soluble polymers, organic solvent soluble polymers and 3o blends of those compounds.
~ .'

-10-3Z3~8 1 1 Auxiliary foam stabilizers may be used in conjunction 2 ~¦ with foam stabilizers or with foam stabilizers and thickeners to 3 ¦ obtain added foam stability. Auxiliary foam stabilizers include 4 lauryl alcohol, sodium laurate, lower aliphatic alcohols, dodecyl alcohol, lower aliphatic acids, lauric acid, fatty acids, hydro-6 philic polymers, such as, agar, polyvinyl alcohol and sodium 7 alginate and blends of these compounds.
8 Combinations of foam stabilizers, auxiliary foam stabil-9 izers and thickeners can be used to give added foam stability.
lo Greater foam stability and optimization of the effects

11 obtained through application of a finishing agent may also

12 ¦ require adjustment of pH. The specific pH range required and

13 additives useful with a particular foam stabilizer or finishing

14 agent to obtain the desired pH are conventionally known in the art. Generally, the pH will lie in the range from about 3 to 12.
16 Typical liquid media which may be used include water, 17 perchloroethylene, methanol, trichloroethylene, and other 18 conventional solvents, e.g., chlorinated hydrocarbons and 19 I aliphatic and aromatic hydrocarbon and petroleum solvents.
Generally, the composition of the present invention is 21 capable of being whipped into a foam having a blow ratio in the 22 range from about 2:1 to 20:1, and preferably, from about 2:1 to 23 10:1. The blow ratio is determined by measuring the weight of 24 a given volume of the foam compared to the weight of the same volume of the composition prior to foaming. The foam density 26 range is generally from about O.S gm/cc. to 0.05 gm/cc. and 27 preferably, from about 0.5 to 0.1 gm/cc.
28 In order to be suitable for use in the present invention, 29 it is important that the foam be sufficiently stable so that it 3~ does not collapse between the time when the initial foaming takes . .
~ ' 1 113Z3(38 1 ¦ place and the time when it is applied to the fabric. The blow 2 ¦ ratios and foam densities noted above should be stable, i.e., 3 ¦ undergo minimal change, during the period from at least about 4 20 minutes and up to 24 hours after formation. Consequentlyr not all types of foams can be used in the present invention. For 6 example, those foams which are of t~e soap bubble type, do not 7 have sufficient stability to withstand the treatment of the 8 coating process. When foams of this type are applied to the 9 fabric, they immediately collapse and result in spotting and lo non-uniform application of the finishing agent.
11 Moreover, such foams are not capable of being coated on 12 to the fabric. In this respect, it is understood that when the 13 foamed composition of the present invention is applied to the 14 fabric, it retains its foamed shape and essentially the same degree of foaming up to the ti~R that the coated fabric is 16 compressed between rolls 26 and 28.
17 If the finishing operation is a water repellancy treatment 18 additives, e.g., catalysts, resins, softeners, hand builders, 19 thickeners, extenders, and the like may be used.
It is not necessary, of course, that a pump, e.g., 20, 21 be used to convey the foam mixture. It may be conveyed simply 22 by gravity feed, or by simply hand feeding to the applicator.
23 Various methods of applying the foam coating to the fabric 24 can be used. Preferably, a conventional mechanical knife e.g. a knife over roll or a floating knife or ~n ~ir knife may be used. Alternately, the 26 foam m y be blown through a conventional jet noz~e. The important point is the 27 act that the stability of the foam composition allows it t~ be 28 asily coated on to the fabric without any problems arising from 29 collapse of the foam. Conse~uently, after application of the 3o oam coating to the fabric, and until the time when the coated . .

I ~L132;3ir3~3 1 ¦ fabric is subjected to the compression step and/or vacuum step, 2 ¦ the foam maintains essentially its original form on the fabric an 3 ¦ neither collapses nor spreads. This allows a uniform coating of 4 ¦ coloring material, water proofing resin or other finishing agent 5 ~ to be applied to the material.
6 ¦ The amount of foam applied to the fabric depends on the 7 ¦ particular finishing treatment being effected the concentration 8 ¦ of the finishing agent, the amount of agent which it is desired 9 ¦ to add on to the fabric, etc. These add-on amounts are commonly lO ¦ known depending on the finishing agent used, and consequently, 11 ¦ the amount of foam required is readily determined by the skilled 12 ¦ art worker. ~he thickness of the foam coating is not critical 13 l 50 long as an effective amount of the finishing agent is present.
14 ¦ Preferably, the percentage of wet pick-up of the foam

15 l with respect to the fabric is within the range from about 8 to

16 ¦ 85% and preferably is from about 15 to 60% by weight based on the

17 l total weight of the fabric.

18 ¦ The compression step may be carried out in a conventional

19 ¦ manner, as by passing through rollers 26 or 28, or may be effected by

20 ¦ padding and/or vacuuming, or the pressure of the knife against

21 ¦ the fabric and the like.

22 ¦ The pressure to which the coated fabric is subjected is

23 l not important so long as it is sufficient to insure penetration of

24 ¦ the foamed composition throughout the fabric. Generally, padding

25 l pressures of from about 20 to 60 psi are found to be satisfactory.

26 ¦ After the compression step, the fabric is subjected to

27 l a drying step to remove any residual water or organic liquid.

28 ¦ Typically, the drying step can be carried out using drying drums,

29 ¦ loop ovens, tenter frame ovens~ air ovens, infra red dryers, 3o ¦dielectric dryers and the like.

1 !, There~fter it is conventional to sub iect the fabric to a 2 1i fixing or curing step depending on the nature of the finishing 3 ll agent. Such fixing or curing steps are conventional in the art.
4 ~¦ Generally, the fixing or curing involves heating for a period of 5 il time from several seconds to a number of minutes. Typically, in 6 ¦1 a dyeing process, the fabric would be heated at temperatures in 7 ¦~ the range from about 200 to 425~ for a time period from about 8 !¦ 10 seconds to ten minutes, preferably, from about 280 to g ¦l 400F. Alternately, fixation steps could include steaming the lO ¦I fabric or treatment with fixative chemicals.
When the process being carried out is a water repellancy 12 li treatment, the finish is generally cured in an oven at a temper-13 l ature range of from about 200 to 600F for a time period from 14 ¦ about three seconds to five minutes, preferably from about 275 to 1~ ¦l 350F.
16 ¦ When the process being carried out is the application of 17 ~1 an antistat or weighter, the fabric is generally cured in an 18 Ij oven at a temperature range of from about 200 - 450~P for a 19 ¦I time period from about 3 seconds to three minutes, preferably 20 ¦ from about 275-300F.
21 1 When the process being carried out is the application of 22 1 a durable press, soil release, or flame retardant finish, the 23 l fabric is cured at a temperature in the range from about 200-24 425F for a time period from about 10 seconds to 10 minutes, preferably from about 275-380F.
26 After the fixation or curing treatment, the fabric may 27 Ibe subjected to conventional after treatments, e.g., rinsing, 28 ¦oxidation, etc., and then wound up for subsequent use.

. I

¦ --1 4--113Z~
The following Examples illustrate the present invention:

EXAMPLE 1: DYEING A POLYE5TER KNIT
.
A 100% polyester sliver knit fabric containing 75% pile and 25~ backing by weight was dyed using a dispersed dye in a foam medium.
The dye composition was prepared by mixing 79.23% water;
1.92~ Resolin Brilliant yellow 7 GL, (a trademark) (Colour Index generic name: disperse yellow 93); 8.65% of an acrylic polymer emulsion having 28 percent solids (supplied under the trademark 10 Acrysol ASE-60 ohm & Haas); 0.576~ of a 28~ solution of ammonium hydroxide; 4.81~ of a butyl benzoate solvent (supplied under the trademark Cindye DAC-888-Cindet Chemical Co.) and 4.81% of ammon ium stearate (33% solution).
The ~nitial viscosity of the mixture was 2450 cps. (No. 4 spindle at 20 rpm room temperature) and the pH was 9.8.
The composition was mixed and foamed in a kitchen type mixer (Hobart "Kitchenaid" (a trademark)) using a wire whip blade until the blow ratio was 2.5:1. The foam containing the disperse dye was knife-coated on to the pile portion of a polyester sliver knit in a thickness of 200 mils. Thereafter, the coated fabric was passed through roller pads at a pressure of 30 psi.
The sliver knit was attached to a pin frame and dried at 250F for 4 minutes and then subjected to a dye fixation treat-ment at 350 F for 90 seconds.
Uniform dyeing was obtained in the pile portion of the polyester sliver knit fabric. The wet pick-up was calculated from the weight of fabric before and after the foam application.
The wet pick-up using the foamed composition was 46.4%. In con-trast, the wet pick-up of the sliver knit fabric when dipped in

30 water was 136.5%, 243.4% in perchloroethylene and lgl.8% in an emulsion of perchloroethylene and water.

113;~3U8 EX~MPLE 2: WATE R RE PELI.ENT F IN I SH
A composition was prepared by mixing 86.45% water, 5%
of a commercial fluoro chemical water repellent finish (supplied under the trademark Scotchguard FC-210~, 3% Acrysol ASE-60 ( a trademark), 2% of a methylated trimethylol melamine resin (80%
solids), 0.05% ammonium chloride, 0.5% ammonium hydroxide, and 3% ammonium stearate (33% solution). The pH of the mixture was adjusted to 9.5-10 with ammonium hydroxide prior to adding the ammonium stearate.
This composition was then foamed using an Oakes foamer to a blow ratio of 5:1 and knife coated on to a sliver knit fabric composed of 70% acrylic pile and a 30% polyester knitted backing.
The depth of the coating was 300 mils. Thereafter, the coated fabric was padded at 30 psi. with a wet pick-up of 43% to 47%.
The fabric was dried at 300F for 2 minutes and cured for 2 min-utes at 325 F. The resulting fabric was water repellent before and after dry cleaning and possessed an acceptable aesthetic hand.

., .

~Ll;3Z3~8 EXAMPLE 3:
A composition was prepared by mixing 78.5% water, 9%
of a methyl hydrogen silicone polymer (supplied under the trade-mark Drival FL-405~, 3% Acrysol ASE-60 (a trademark~, 3% of a methylated trimethylol melamine resin (80% solids), 3% Valcat FL-403 (a trademark for a catalyst for the silicone polymer), .5%
ammonium hydroxide, and 3% ammonium stearate (33~). The pH of the mixture was adjusted to 9.5-10 with ammonium hydroxide prior to adding the ammonium stearate.
Thereafter, the composition was foamed using a planetary mixer equipped with wire whips to a blow ratio of 5:1, and knife coated onto an acrylic pile fabric in a thickness of 300 mils.
Thereafter, the coated fabric was padded at 30 psi. to produce a final wet pick-up of 38-42%, dried at 300F for 2 minutes and cured for 2 minutes at 325F. The resulting finish was water re-pellent, possessed durability to dry cleaning and possessed an acceptable aesthetic hand.
EX~PLE 4: WATER REPELLENT FINISH
A foamable composition was prepared by mixing 85.9 parts water, 4 parts Acrysol ASE-60 (a trademark), 2 parts of a methyl-ated trimethylol melamine resin (80% solids), 0.1 parts ammonium chloride, 3 parts Unamide N-72-3 (a trademark for a Coconut alkanol-amide from Lonza Chemical Company) and 5 parts of a commercial water repellent (supplied under the trademark Scotchguard FC-210).
The pH was 6.7, and the viscosity was 600 cps. (No. 4 spindle at 20 rpm room temperature).
The solution was foamed to 4:1 blow ratio and knife coated onto two samples of an acrylic sliver knit pile having a 70% acrylic pile and a 30% polyester backing at a coating thick-ness of 50 mils and 25 mi1~ respectively. The samples were padded at 30 psi. and the wet pick-up was calculated to be 44-77%.

The samples were dried at 225 F, for 5 to 7 minutes 1~3~308 and cured for 15 minutes at 275F. The finished samples were water repellent and the finish was found to be durable to dry cleaning.
EXAMPLE 5: ANTISTAT FINISH ON POLYESTER DOUBLE KNIT

_ A foamable composition was prepared by mixing 90.9 parts water, 1.5 parts Valstat E (a trademark for Commercial anionic antistat from Valchem), 4 parts Acrysol ASE-60 (a trademark), 0.1 part of sodium oleyl sulfate emulsifier (supplied under the trade-mark 26~ solids Sipex OS-Alcolac Inc.,), 0.5 part ammonium hydrox-ide (to pH 9-10) and 3 parts ammonium stearate (33~ solution).
The final pH was 9.9.
The composition was foamed to a 4:1 blow ratio and was knife coated on two samples of polyester double knit at 50 mils.
The samples were padded at 30 psi. and average wet pick-up was calculated as 63%. The samples were then dried and cured in one stage at 325F for 2 minutes to yield a fabric having an antistatic finish.

EXAMPLE 6: FOAM METHOD ~F APPLICATION OF WEIGHTERS TO
POLYESTER DOUBLE KNITS
_ A foamable composition was prepared by mixing 88.4 parts water, 4 parts of an aqueous solution of 10~ shopal gum, a starch derivative, 4 parts Acrysol ASE-60 (a trademark), 0.1 part ammon-ium chloride, 0.5 parts ammonium hydroxide (to pH 9.5-10) and 3 parts ammonium stearate (33~ solution). The final pH was 9.7 and the viscosity was 1800 cps. (No. 4 spindle, 20 rpm at room temperature).
The composition was foamed to a 5:1 blow ratio and was knife coated at 50 mils onto a polyester double knit sample.
The sample was padded at 30 psi. and wet pick-up was calculated to be 60%. The sample was dried and cured in one stage at 340F for 2 minutes.
The sample showed a weight gain of 1.03% and possessed a ~' satisfactory hand.
EXP~IPLE 7: FOAM DURABLE PRESS FINISHING ON 1-00% COTTON TWILL
A foamable durable press resin composition was prepared by mixing 49 parts water, 40 parts Valrez H-17 (a trademark for dihydroxy dimethylol ethylene urea resin from Valchem), 0.5 parts ammonium chloride, 5 parts Acrysol ASE-60 (a trademark), 0.5 parts ammonium hydroxide (to pH 9-10) and 5 parts ammonium stear-ate (33~). The final pH range was 9-10.
The composition was foamed to a blow ratio of 3:1. The foam was knife coated onto a 100% cotton twill at a thickness of 50 mils and was padded at 30 psi. The wet pick-ups were calculat-ed to be 59-61%. The samples were dried at 225 F for 4 minutes, steam pressed at 5-10-5 cycles and cured at 330 F for 3 minutes.
The finished samples of cotton twills possessed good resistance to wrinkling which was retained after repeated home laundering.

EXAMPLE 8: FOAM DURABLE PRESS FINISHING ON 65/35 _ _ POLYESTER/COTTON BLEND FABRICS

A foamable durable press resin composition was prepared 20 by mixing 57.9 parts water, 25 parts Valrez H-17 (a trademark), 0.5 parts ammonium chloride, 4 parts of polyethylene softening agent (20% solids), 0.1 part Valdet 4016 (a trademark for a wetting agent from Valchem), 2 parts of an acrylic polymer emulsion which is a hand improving agent (supplied under the trademark Valbond-6021 from Valchem), 5 parts Acrysol ASE-60 (a trade~ark) (the pH of the mix at this pOillt was 4.7), 0.5 parts ammonium hydroxide (pH adjusted to`9.5-10) and -5 parts Fotassium:stearate (15~ solution). The final ph range ~s 9.5-10.
The composition was foamed to a blow ratio of 4:1 and knife coated at 50 mils onto samples of a 65/35 polyester/cotton blend, which was then padded at 30 psi. and the wet pick-up was ;308 calculated to be 67%.
The samples were dried at 220F for 3 minutes, pressed using a standard durable press pressing cycle at 325F composed of 5 seconds of steam, 10 seconds of pressing and 5 seconds of vacuum to produce creases in the fabric. The fabric was then cured for 3 minutes at 330 F.
The finished samples of the 65/35 polyester/cotton blend possessed wrinkle resistant properties which were durable to re-peated home laundering.

10 EXAMPLE 9: FOAM SOIL RELEASE FINISH ON 65/35 POL~ESTER/COTTON
BLENDS

A foamable durable press resin formulation was prepared by mixing 56.9 parts water, 25 parts of a durable press resin (dimethylol dihydroxy ethylene urea-46~ solids), 8 parts of ~albond S-50 (a trademark for a commercial soil releasing agent), 4 parts of a textile softener (supplied under the trademark Valsof S-2), 0.1~ of a wetting agent (supplied under the trademark Valdet-4016), 0.5 parts ammonium chloride (pH checked at this stage was 4.0), 0.5 parts ammonium hydroxide (pH adjusted to 9.5-10) and 5 parts ammonium stearate (33% solution). The final pH was 9.8 and the viscosity was 80 cps. (No. 4 spindle, 20 rpm, at room temperature).
The composition was foamed to a 4:1 blow ratio, knife coated at a thickness of 50 mils onto a sample of a 65/35 poly-ester/cotton blend and padded at 30 psi. The average wet pick-up was 69%. The samples were dried at 220F for 3 minutes and cured at 330 F for 3 minutes.
The finished 65/35 polyester/cotton blend possessed soil releasing properties durable to home laundering.

EXAMPLE 10: FOAM APPLICATION OF A WATER REPELLENT FINISH ON AN
ACRYLIC SLIVER RNIT FABRIC

A foamable composition was prepared by mixing 86.4 parts -- ~0 --~132;~

water, 3 parts Acrysol ASE-6Q ~a trademark2, 2 parts of a methyl-ated trimethylol melamine resin C80% solids), 0.5 parts ammonium hydroxide, 3 parts potassium stearate (15% solution), 5 parts Scotchguard FC-210 (a trademarkl and 0.1 part ammonium chloride.
The final pH was adjusted to 9.5-10 ~ith ammonium hydroxide.
The composition was foamed to a 4:1 blow ratio and was knife coated at a thickness of 50 mils on the pile of an acrylic sliver knit composed of 70% acrylic pile and 30% knitted polyester backing. The sample was padded at 30 psi. and the wet pick-up 10 was calculated as being 47.2%. The sample was dried at 225 F for 7 minutes and cured at 275F for 15 minutes.
The finished acrylic pile gave good initial water re-pellency which was durable to dry cleaning.
EXAMPLE 11:
Twenty parts tris-(dibromopropyl) phosphate 62% emulsion, by weight, was added to 80 parts of an aqueous foamable composi-tion containing 8 parts Acrysol ASE-60 (a trademark), 0.5 parts ammonium hydroxide, 3 parts potassium stearate (15%) and 5 parts ammonium stearate (33%). The p~ was adjusted to 9.5-10 with ammonium hydroxide.
The composition was foamed to a 4:1 blow ratio and was knife coated onto a polyester sliver knit pile (25 mils above pile). The sliver knit was padded at 30 psi. and the wet pick-up was calculated as being 36%. The sample was then dried at 220F
and thermosoled at 350F for 90 seconds.
The finished polyester sliver knit was subjected to a match test and the methenamine carpet flammability test and passed both tests. The pile of the fabric possessed a soft hand.

, :~

11;3Z3~3 EXAMPLE 12:
A foamable composition was prepared by mixing 67.5 parts water, 4 parts Acrysol ASE-60 (a trademarkl, 0.5 parts ammonium hydroxide, 3 parts ammonium stearate (33%) and 25 parts tris-(dibromopropyl~ phosphate (62~ emulsion~. The pH was adjusted to 9.5-10 with ammonium hydroxide.
The composition was foamed to a 4:1 blow ratio and was knife coated to a thickness of 50 mils above the pile of a poly-ester sliver knit fabric. The fabric was padded at 30 psi. and the wet pick-up was calculated as 45%-50%. The samples were then dried at 22Q F and thermosoled at 350F for 90 seconds.
The finished polyester sliver knit pile was subjected to the methanamine carpet flammability test and passed the test.

EX~PLE 13: FOAM FLAME RETARDANT FINISHING OF COTTON WITH
_ N-METHYLOL DIALKYL PHOSPHONO PROPIONAMIDE

A foamable composition was prepared by mixing 44.5 parts water, 1 part urea, 40 parts Pyrovatex-CP (a trademark for N-Methylol dialkyl phosphono propionamide, 80~ solution from Ciba-Geigy), lQ parts of trimethylol melamine resin, 0.5 parts ammonium chloride and 4 parts Unamide N-72-3 (a trademark for Coconut alkanolamide from Lonza Chemical Co.). The pH was 5.8 and viscos-ity was 10 cps. (No. 4 spindle, 20 rpm at room temperature).
The composition was foamed to a 4:1 blow ratio and was knife coated on cotton flannel samples at 50 mils thickness and padded at 30 psi. (The wet pick-up was 74%). The sample was then dried at 225F for 3 minutes and cured for 3 minutes at 325F. The finished cotton flannel samples were tested for fire retardancy by the vertical char test method and passed the test.

'~

~3Z3~8 EXAMPLE 14: FOAM THPC-UREA PRECONDENSATE FLAME RETARDANT
APPLICATION ON COTTON FLANNEL

A foamable composition containing 95 parts of a precon-densate (based on 65 parts Tetrakis hydroxy methyl phosphonium chloride (THPC~, and 8 parts urea), 1. 5 parts sodium acetate (as a buffer) and 3. 5 parts Unamide N-72-3 was prepared. The pH was 4.1 and viscosity was 27.5 cps. (No. 4 spindle, 20 rpm at room temperature).
The composition was foamed to 11:1 blow ratio, applied on cotton flannel by knife coating at 50 mils thickness and the fabric was padded at 30 psi. The wet pick-up was calculated as 51.4%. At this wet pick-up, the weight add on of precondensate was calculated as 35.64 percent (31.6% THPC and 4.04% urea) and the moisture level on the fabric was 13 percent). The moisture level was found adequate for direct ammoniation for the fixation of the fire retardant without pre-drying. The fabric after padding was ~irectly subjected to gaseous ammonia exposure for 5 minutes at room temperature and the fi~e ret~rdant on the fabric was oxidized with alkaline sodium perborate. The fabric was then rinsed and dried. The cotton flannel treated this way gave a vertical char length of 4-4.5" and was flame retardantO
EXA~IPLE 15: DYEING ACRYLIC SLIVER KNIT WITH CATIONIC DYE
A foamable composition containing a cationic dye was prepared by mixing 81.5 parts water, 2 parts Astrazon Brill Red 4G, (a trademark), Color Index generic name: Basic Red 14, ~ ~arts Acrysol ASE-60 ( a trademark), 0.5 parts ammon-ium hydroxide, 3 parts potassium stearate (15~ solution) and ~
parts ammonium stearate (33% solution). The pH was 9.7 and vis-cosity 2060 cps. (No. 4 spindle, 20 rpm ';~ . ' .

- 1~32~

1 at room temperature).
2 The composition was air whipped in a mixer to a blow 3 ratio of 5:1 and the foam was knife coated on the acrylic pile 4 of a sliver knit having 70% acrylic pile and 30% polyester knitted backing. The sliver knit was padded at 30 psi and the 6 wet pick-up was calculated as 30.3 percent. The sample was 7 then dried and steamed under pressure at a temperature of 240F
8 for 20 minutes. The cationic dye was fixed on the acrylic 9 pile. A portion of the sample was rinsed in perchloroethylene and was found to be fast to an after rinse. A uniform bright 11 red shade was obtained on the acrylic pile.
12 EXA~LE 16: FOAM COMPOSITION IN I~IETHANOL FOR DYEING
13 A foamable composition cor.taining 54.3 parts methanol, 14 27.2 parts water, 2 parts Resolin Brilliant Yellow 7 GL Color ~r~ ~ e~
Index generic name: Disperse yellow 93, 8 parts Acrysol ASE-6 16 0.5 parts ammonium hydroxide, 3 parts potassium stearate (15%
17 solution) and 5 parts ammonium stearate (33~ solution) was 18 prepared. It had a pH of 9.5-10 and a viscosity of 420~ cps.
19 (No. 4 spindle, 20 rpm at room temperature).
The composition was foamed in a kitchen mixer to a 3:1 21 blow ratio and was knife coated on the 100% polyester sliver 22 knit sample at a 50 mils thickness above the pile. The sliver 23 knit was then padded at 30 psi (wet pick-up was 68~) and dried 24 at 220F for 4 minutes. The sample was then thermosoled in an air oven at 350F for 90 seconds for the fixation of the disperse 226 dye. The polyester pile was dyed uniformly by this method.

I .

Il -24-- 1~3~ 8 EXA~PLE 17: SIMULTANEO~S D~EI~G AND WATER REPELLENT FINISHING
IN FOAM MEDIUM

A foamable composition containing 84.4 parts water, 5 parts Acrysol AS~-60 (a trademark~, 2 parts Resolin Blue F. R.
Col~r Index generic name: Disperse Blue 154, 5 parts Scotchguard FC-210 (a trademark), 0.5 parts ammonium hydroxide, 0.1 parts Sipex OS and 3 parts ammonium stearate (33% solution). The pH
was 10.3 and the viscosity was 440 cps. (No. 4 spindle, 20 rpm at room temperature).
The composition was foamed to a 3:1 blow ratio in a mixer, and the foam was knife coated onto a polyester sliver knit pile and then padded at 30 psi. The wet pick-up was calculated as 49.3%. The sample was then dried at 225 F for 4 minutes and was thermosoled at 350 F for 90 seconds. The resulting fabric pile was dyed and was water repellent. Thus simultaneous dyeing and -water repellent finishing was accomplished by the foam method.

EXAMPLE 18: SIMULTANEOUS FLAME RETARDANT AND ~ATER REPELLENT
FINISHING BY FOAM ~IETHOD
-A foamable composition containing water repellent and flame retardant was prepared as follows. To 80 parts of a composi-tion containing 3 parts Acrysol ASE-60 (a trademark), 2 parts of a methylated trimethylol melamine resin (80% solids), 3 parts ammon-ium stearate (33~ solution), 0.5 parts ammonium hydroxide, 5 parts Scotchguard FC-210 ~a trademark~ and 86.5 parts water; 20 parts of Apex flame proof-567 (a trademark for Tris-dibromopropyl phos-phate, a 62~ active emulsion) were added. The pH was adjusted to 9.5-10 with ammonium hydroxide.
The composition was foamed to 4:1 blow ratio and was knife coated onto a polyester sliver knit pile at 50 mils and padded at 20 psi. (wet pick-up was 48~). The sample was dried ~1~231~3 at 220F for 5 minutes and was thermosoled at 350F for 90 seconds.
The polyester pile passed the methanamine carpet flamma-bility test and was water repellent.
EXAMPLE 19: FOAM DYEING IN AN ORGANIC SOLVENT
A foamable composition containing 51 parts Varsol ~2, (supplied under the trademark a hydrocarbon solvent), 0.5 parts Resolin Brilliant Yellow 7 GL, 40 parts water, 0.5 parts Sipex OS (a trademark), 4 parts Acrysol ASE-60 (a trademark), 0.5 parts ammonium hydroxide and 3.5 parts ammonium stearate (33%) was prepared. The pH was asjusted to 9.5-10 with ammonia prior to the Varsol addition.
The composition was foamed to a blow ratio of 3.5:1 in a kitchen mixer and a 50 mils height of foam was knife coated on to the pile of a polyester sliver knit sample. The sample was then padded at 30 psi. and the wet pick-up was calculated as 73~.
The polyester sliver knit sample was then dried at 220F for 4 minutes and thermosoled at 350F for 90 seconds. The polyester pile dyed uniformly.
EXAMPLE 20: FOAM DYEING IN PERCHLOROETHYLENE
A foamable composition containlng 51 parts perchloro-ethylene, 0.5 parts Resolin Brilliant Yellow 7 GL, 40 parts water, 0.5 parts Sipex OS (a trademark), 4 parts Acrysol ASE-60 (a trade-mark), 0.5 parts ammonium hydroxide and 3.5 parts ammonium stearate (33~) was prepared. The pH was adjusted to 9.5-10 with ammonia prior to the perchloroethylene addition.
The composition was foamed to a blow ratio of 3:1 in a kitchen mixer and 25 mils height of foam was knife coated onto the pile of a polyester sliver knit. The sample was then padded at 30 psi.and the wet pick-up was calculated as 84~. The polyester sliver knit sample was then dried at 220 F for 4 minutes 1~3~

and thermosoled at 350F for 90 seconds. The polyester pile dyed uniformly.
EXAMPLE 21: FOAM DYEING WITH VACUUM
To correct the shade on a polyester leisure twill fabric from a light brown shade to a darker brown shade, the following procedure with a vacuuum slot was carried out:
A foamable composition was prepared by mixing 90.5 parts water, 1.5 parts Terasil Brown 3R (a trademark) (Disperse Brown 1), 0.45 parts Esterquinone Red BA-80% (a trademark) (Disperse Red 60), 10 0.05 parts Resolin Blue FBL (a trademark) (Disperse Blue 56), 3.5 parts Acrysol ASE-60 (a trademark), 0.5-0.75 parts ammonia (to pH 9.5-10) and 3.5 parts ammonium stearate (33% solution).
The composition was foamed to an 8:1 blow ratio and the foam was knife coated on four samples of the leisure twill fabric at 35 mils coating thickness.
Two samples were subjected to vacumming from the back side using a vacuum slot and the wet pick-up was calculated at 29~. The samples were dried at 220F and steamed for color fixa-tion at 250 F for 45 minutes.
An additional two samples were vacuumed and padded at 30 psi. and the wet pick-up was calculated as 35%. These two samples were also fixed by drying at 220F for 5 minutes and steaming at 250 F for 45 minutes.
One sample from each set was rinsed, and displayed no color bleeding.
A darker brown shade was produced on each sample when compared to original shade, and all samples were uniformly dyed.

''";

- ~13~,3~3 EXAMPLE 22: DEVELOPING RAPIDOGEN COLORS WITH FO~ED ACID
A foama~le composition containing acetic acid was pre-pared by mixing 94 parts water, 1 part Cellosize QP 52000 (a trade-mark for hydroxyeth~l cellulose thickener from Union Carbidel, 2 parts glacial acetic acid and 3 parts Unamide N-72-3 (a trademark).
The final pH was 4 and the viscosity was 3500 cps. (No. 6 spindle, 20 rpm at room temperature). The acetic acid composition was foamed using a kitchen mixer to blow ratio of 8:1.
~ Rapidogen color printed and dried fabric samples were knife coated with acid foam and processed as follows for the coupling reaction and development of color:
On one sample the acid foam was knife coated at 50 mils on the back side ~unprinted side) and the fabric sample was padded at 30 psi. (wet pick-up was 25%).
On another sample the acid foam was knife coated at 100 mils on the back side and padded at 30 psi. (wet pick-up was 40~).
~oth samples were batched for 20 minutes and then rinsed and soaped using 0.5~ soda ash and 0.25~ soap solution at 160 F
for 20 minutes. The samples were then rinsed and dried.
On both samples the rapidogen prints were found to be developed and to be comparable to acid aged samples.
EXA~lPLE 23. DURABLE PRESS FII~ISH
A foamable durable press resin composition was prepared by mixing 35 parts of Valrez 248 (a trademark for a modified gly-oxal resin), 2 parts of a textile softener Valsof PE (a trademark for a polyethylene emulsion), 2 parts of a dye fixative Valfix EST (a trademark for a formaldehyde dicyandiamide condensate), 4 parts Valmel HM (a trademark for a melamine resin) and 9 parts Valcat 7 (a trademark for a magnesium chloride catalyst). To the composition was added a foam stabilizer in the amount of 0.2 parts 471-A silicone fluid 3~3 (a trademark for a silicone/polyglycol copolymer from Dow Corning) to form a paste like substantially liquid admixture of foam stabi-lizer and finishing agent. To this was added 47.8 parts of water.
This composition was then foamed using a kitchen mixer to a blow ratio of 5:1. The foam was knife coated onto a 50/50 blend of polyester/cellulose fabric. The fabric was padded at 100 pounds per linear inch and the wet pick-up calculated as approximatley 30 percent.
In another sample, 0.01 parts of 471-A silicone fluid (a trademark for a silicone/polyglycol copolymer from Dow Corning) was added to the finishing composition and then foamed using a mechanical foamer (Oakes foamer) to a 20:1 blow ratio. The foam was again knife coated onto a 50/50 blend of polyester/cellulose fabric.
In each case the fabric was then dried at 240 F and cured at 340F for 90 seconds. The fabrics possessed a good re-silient hand with a DP rating (durable press) of 3.8. The result-ing fabric's wicking behavior was found to be superior to that of cloth fabrics treated with traditional resin compositions.
EXAMPLE 24: CORDUROY FABRIC

. _ A foamable composition containing 1.5 parts Valfoam CC
(a trademark for a Coconut fatty acid diethanolamide), 35 parts Valbond 6002 (a trademark for an acrylic copolymer), 28 parts Valrez H-17 (a trademark for glyoxal resin), 26 parts Valsof PE
(a trademark for a polyethylene emulsion) and 5 parts of a magnes-ium di-hydrogen phospnate catalyst. The composition was foamed to 9:1 blow ratio. The foam was knife coated to a thickness of six mils on the back side of a cotton corduroy fabric. The wet pick-up of the fabric was 15% O.W.G. The fabric was then dried and cured at 330 F.
The finished corduroy fabric possessed soft pile hand 1132~3~8 and dimensional stability during repeated washing tests.
Another foam composition was prepared as set forth in the previous Example. The foamed composition was coated using a floating knife onto the reverse side of a corduroy fabric. The wet pick-up of the fabric was 20-30~ O.W.G. The fabric was dried and cu~ed at 330F. The finished corduroy fabric possessed a soft pile hand and dimensional stability during repeated wash tests.
In both cases, there was no strike-through of the finish to theface of the fabric.
EXA~IPLE 25: CARPET DYEING
An acidic foamable composition was prepared by mixing 0.75 parts Cellosize QP-52,000 ta trademark for Hydroxyethyl cellulose from Union Carbide), 1.5 parts Unamide N-72-3 (a trade-mark for Coconut oil alkanolamide from Lonza Inc.) 97.75 parts water and adjusting pH to 5.2 with acetic acid. By using 90 parts of the foamable composition, 2 parts Merpacyl Red B (a trademark for liquid acid dye from Du Pont) and 8 parts Merpacyl Orange RAR
(liq.) (a trademark~, an acidic foamable composition was prepared.
The mixture was foamed to 8:1 blow ratio and 30 mils of the foam was knife coated on the nylon carpet loop pile. The sample was vacuumed from backing and was padded at 30 psi. to collapse foam and distribute dye uniformly. (Wet pick-up 35%).
Then it was steamed at 210F for 5 minutes for color fixation and dried at 275 F for S minutes. Uniform dyeing was obtained.
The colorfastness properties were tested without any after clearing. The sample possessed excellent crock resistance, wash and light fastness properties.

11 113Z;308 I . ;'' 1 ¦ EXAMPLE 26 : SOFTENER APPLICATION
2 ¦ A foamable textile softener composition was prepared by --~1 I ~ ~ ~ ~ r 3 I mixing 4 parts Valsof PE ~polyethylene emulsion softener), 0.5 4 ¦ parts fatty acid diethanolamide and 95.5 parts water. The 5 ¦ composition was foamer to 15:1 blow ratio and 10 mils of foam 6 ¦ was knife coated on a napped 50/50 polyester/cotton blued flannel 7 ¦ fabric. The coated fabric was padded at 80 pounds per linear inch 8 (wet pick-up 25~).
9 The the fabric was dried in an oven at 260F for 2 I minu A finished fabric having a soft and was obl ained z!

z6 2a . . I

-31-

Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:

1. In a method for treating a fabric with a finishing agent wherein the finishing agent in a liquid medium is applied to the fabric and the fabric is then subjected to drying and a fixation or curing step, the improvement which comprises using a treating composition which is stable and will substantially retain its physical properties until such time as pressure is applied thereto composed of a fabric finishing agent in an amount effective to impart the properties of the finishing agent to the fabric, and up to about 10weight percent of a foam stabilizer, the remainder of the composition being a liquid diluent and conventional additives, foaming the treating composition into a foam having a blow ratio in the range from about 2:1 to 20:1 and a foam density in the range from about 0.5 gm/cc to 0.05 gm/cc, applying a bank of the foam directly on to a fabric, reducing the thickness of the foam in contact with the fabric with the foam substantially retaining its physical properties, collapsing the foam and forcing the foam into the coated fabric by applying pressure and then subjecting the fabric to said drying and curing or fixation steps.

2. The method of claim i wherein the fabric finishing agent is a material selected from the group consisting of coloring agents, color developers, water repellant agents, fire retardants, antistatic agents, soil release agents, durable press agents, weighting agents, softeners and hand builders.

3. The method of claim 1 wherein the fabric is coated using a coating knife.

4. The method of claim 1 wherein the fabric is coated using a floating knife.

5. The method of claim 1 wherein the foam is forced through fabric by compressing the fabric at a pressure in the range from about 20 to 60 psi.

6. The method of claim 1 wherein the foam is forced through the fabric by applying a vacuum to the side of the fabric opposite the foam coated side.

7. The method of claim 1 wherein the fabric is a pile fabric.

8. In a method for treating a fabric with a finishing agent wherein the finishing agent in a liquid medium is applied to the fabric and the fabric is then subjected to drying and a fixation or curing step, the improvement which comprises using a treating composition which is stable and will substantially retain its characteristics until such time as a mechanical force is applied thereto composed of a fabric finishing agent in an amount effective to impart the properties of the finishing agent to the fabric, and up to about 10 weight percent of a foam stabilizer, the remainder of the composition being a liquid diluent and conventional additives, foaming the treating composition into a foam having a blow ratio in the range from about 2:1 to 20:1 and a foam density in the range from about 0.5 gm/cc to 0.05 gm/cc, coating into the surface of a fabric a quantity of foam greater than that required to effect the desired treatment, removing a portion of said foam from said fabric, and mechanically forcing the remaining foam into the coated fabric and collapsing the foam by compressing the fabric to effect penetration of the foam through the fabric and destroy the bubbles thereof.
9. A process for coloring fabric comprising the steps of: a) applying an acid developable coloring agent to said fabric;
b) applying to said fabric having said developable coloring agent thereon a foamed composition comprised of an acidic developing agent for said eoloring agent, said foam having a blow ratio in the range from about 2:1 to 20:1 and a foam density in the range from about 0.5 gm/cc to 0.05 gm/cc; c) collapsing said foamed composition onto said fabric to achieve contact and reaction of said developable coloring agent with said developing agent there-fore, and thereby produce a colored fabric; and d) drying and fixing the color of said colored fabric.

10. In a foamable composition suitable for treating fabrics with a finishing agent comprising a fabric finishing agent in an amount effective to impart the properties of the finishing agent to a fabric, a foam stabilizer, and a liquid diluent; the improvement comprising about 0.01 to about 10 percent foam sta-bilizer and in an amount sufficient to form said composition into a stable foam having a blow ratio in the range from about 2:1 to 20:1, a foam density in the range from about 0.5 gm/cc to 0.05 gm/cc, and which is sufficiently stable to substantially retain its characteristics during application until a mechanical force is applied thereto.
11. The composition of claim 10 wherein the fabric finishing agent is a material selected from the group consisting of coloring agents, color devolopers, water repellent agents, fire retardants, antistatic agents, soil release agents, durable press agents, and weighting agents.
12. The composition of claim 10 wherein the liquid diluent is selected from the group consisting of water, lower alkanols, chlorinated hydrocarbons and hydrocarbon solvents.
13. The composition of claim 10 wherein the pH is in the range from about 3 to 12.
13. The composition of claim 10 wherein the amount of finishing agent is from about 0.001 to 95 weight percent.
15. In a stable foamed composition suitable for con-tinuously treating fabrics with a finishing agent comprising a fabric finishing agent in an amount effective to impart the pro-perties of the finishing agent to a fabric, a foam stabilizer and a liquid diluent; the improvement comprising about 0.01 to about 10 percent foam stabilizer and in an amount sufficient to form a stable foam having a blow ratio in the range from about 2:1 to 20:1, a foam density in the range from about 0.5 gm/cc to 0.05 gm/cc, and which is sufficiently stable so that upon application onto a fabric said foam composition will flow on the fabric sur-face and not break down until a mechanical force is applied thereto.
16. The composition of claim 15 wherein the foam sta-bilizer is selected from the group consisting of a metal salt of fatty acids, ammonium salts of fatty acids, sodium lauryl sulfate, coconut oil diethanol amide and disodium N-octadecyl sulfo succinamide.
17. The composition of claim 15 which further includes a thickener selected from the group consisting of polyacrylic acid, polyvinyl alcohol, natural gums and starches.
18. The composition of claim 16 which further includes a thickener selected from the group consisting of polyacrylic acid, polyvinyl alcohol, natural gums and starches.
19. The composition of claim 18 which further includes an auxiliary foam stabilizer selected from the group consisting of lauryl alcohol, sodium laurate and lauric aeid.
20. The composition of claim 15 further including an auxiliary foam stabilizer selected from the group consisting of lauryl alcohol, sodium laurate and lauric acid.
21. The composition of claim 15 wherein the liquid diluent is selected from the group consisting of water, lower alkanols, chlorinated hydrocarbons and hydrocarbon solvents.
22. The composition of claim 15 wherein the pH is in the range from about 3 to 12.
23. The composition of claim 15 wherein the amount of finishing agent is from about 0.001 to 95 weight percent.