Chemical formulations and methods utilizing NPB(n-propyl bromide) as non-aqueous carrier mediums to apply fluorocarbons and other organic chemicals to substrates

a technology of npropyl bromide and chemical formulation, which is applied in the direction of detergent compounding agent, final product manufacture, physical treatment, etc., can solve the problems of high temperature and expensive drying system to evaporate water from aqueous carriers, and achieve water and oil repellency, improve the effect of fluorine composition, and reduce the amount of compound added

Inactive Publication Date: 2004-01-15
RISING LARRY ERVIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0003] By this invention, NPB has shown an excellent alternative to current aqueous and chlorinated hydrocarbons as a carrier medium for application of organics to substrates. NPB is non-regulated, non-toxic and has no ozone pollution properties. NPB is economical and environmentally friendly.
[0004] After extensive study, it has been found that the use of NPB as a carrier dramatically improves the performances and durability of benefits achieved by application of organics to substrate and that this invention is superior to current methods and chemistry.
[0015] By the invention, it has been discovered surprisingly that a mixture of NPB and Perfluoroalkyl polyacrylate can be foamed with or without the aid of a foaming agent (Example 1). Not using foaming agents greatly improves the benefit of the applied fluorine composition to the substrate and reduces the amount of compound added to fabric to achieve water and oil repellency.
[0016] In another aspect, this invention involves the surprising discovery that the use of NPB applied in 100% concentration via dipping and squeezing with pressure rollers (Padding) and the NPB being evaporated away imparts a much improved softness and luster to textile substrates, especially home furnishing, apparel fabrics and upholstery fabrics.

Problems solved by technology

These aqueous carriers require high temperatures and expensive drying systems to evaporate the water.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] A solution of 98% NPB and 2% Perfluoroalkyl polyacrylate were mixed and applied to the foam generator which imparts the solution to a high speed mixer that generates the solution into foam. The foam was then dispensed to the substrates listed in below via an applicator at 30%-wet pickup. The substrates were then dried at 170 deg C. for 1-minute dwell time with the following results:

1 Initial After 10 Home Laundries Example 1 Oil IPA Spray Fluoride Oil IPA Spray Fluoride Cotton 5 85 100 2160 ppm 2 60 70 1600 ppm Polyester 6 90 100 1170 ppm 5 90 90 980 ppm Pes / Rayon 6 80 100 5 60 70

example 2

[0025] A solution of 99.6% NPB and 0.4% Perfluoroalkyl polyacrylate were mixed and applied to the substrates listed below via a pad applicator at 3.5 bars pressure. The solution was applied at noted wet pickup. Again, the substrates were dried at 170 deg C. with a 1-minute dwell.

2 Initial After 10 Home Laundries Example 2 Oil IPA Spray Fluoride Oil IPA Spray Fluoride Cotton 6 100 100 2480 ppm 3 90 80 2200 ppm Polyester 8 90 100 1270 ppm 6 90 90 1100 ppm Pes / Rayon 8 80 100 6 80 80

example 3

[0026] A solution of 99.6% NPB and 2% Perfluoroalkyl polyacrylate were mixed and applied to the substrates listed below via a Spray at 1.5 bars pressure. The solution was applied at noted wet pickup. Again, the substrates were dried at 170 deg C. with a 1-minute dwell.

3 Initial After 10 Home Laundries Example 3 Oil IPA Spray Fluoride Oil IPA Spray Fluoride Cotton 6 85 100 2260 ppm 2 60 70 1690 ppm Polyester 6 90 100 1170 ppm 5 90 90 1080 ppm Pes / Rayon 6 80 100 5 60 70

Use of the Compositions Not According to the Invention

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Abstract

The present invention relates to methods and chemical formulations utilizing NPB(n-propyl bromide) also called 1-bromopropane or propyl bromide or 1-BP or N-Bromopropane as non-aqueous carrier mediums to apply fluorocarbons and other chemicals to substrates, whereby the NPB is evaporated away leaving the remaining chemicals on the substrate. The present invention offers formula and method for applying organic chemicals to substrates that perform superior to current water based technology. Additional, the invention offers a more economical and environmental friendly alternative to current chlorinated hydrocarbons carriers that are being phased out by mandate of the Environmental Protection Agency (EPA).

Description

[0001] NPB (n-propyl bromide) has been used in the metal parts degreasing industry, particularly in vapor degreasers for years. Now according to the invention it has been discovered to have a very useful and desired purpose in other industries. Many substrates, for example, home textiles, carpets, upholstery acquire oil-,water- and soil-repellant properties by treatment with fluorocarbons.[0002] These chemicals are now applied to substrates with water based (aqueous) carriers requiring other auxiliary chemicals i.e.: emulsifiers and dispersing agents to keep organics in suspension. These auxiliary chemicals needed for aqueous application often lesson the intended benefit of the applied chemical to the substrate. These aqueous carriers require high temperatures and expensive drying systems to evaporate the water. Chlorinated hydrocarbons have been used in the past as carrier mediums to apply organic chemicals to substrates when an aqueous carrier could not be used. Chlorinated hydroc...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D06B9/06D06M13/08D06M15/277
CPCD06B9/06D06M2200/11D06M15/277D06M13/08Y02P70/62
Inventor RISING, LARRY ERVIN
Owner RISING LARRY ERVIN
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