Unlock instant, AI-driven research and patent intelligence for your innovation.

Siloxanes compsn. for treating woolen material

A composition and technology of polysiloxane, applied in the field of textile fiber materials, can solve problems such as volatile toxic compounds, odor pollution, etc.

Inactive Publication Date: 2005-07-13
CIBA SPEZIALITATENCHEMPFERSEE
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of compounds containing sulfur in the -2 oxidation state is that their preparation and use, especially under the action of heat, can cause odor nuisance and the formation of volatile toxic compounds

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Siloxanes compsn. for treating woolen material
  • Siloxanes compsn. for treating woolen material
  • Siloxanes compsn. for treating woolen material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] The number of units of the formula (III) present in component A can vary within wide limits. It can be controlled in particular by the nature and amount of the raw materials used in the preparation of component A. A known method (familiar to those skilled in the art) for the preparation of polysiloxanes containing silicon atoms bonded to 3 oxygen atoms involves combining an organopolysiloxane such as polydimethylsiloxane with a basic catalyst Formula R-Si(OR 1 ) 3 reaction of trifunctional silanes. Here R 1 An example is an alkyl group. Suitable for the preparation of component A, which means that the preparation method may include: making the formula The organopolysiloxane with the formula RSi(OR') 3 , Formula RSi(OR′) 2 (OR 2 ) or the formula RSi(OR')(OR 2 ) 2 The silane reaction, where R 2 is an alkyl group, preferably a methyl group, and z has a value customary for polysiloxanes. The quantitative ratio of organopolysiloxane:silane makes it possible to c...

Embodiment 1

[0096] Embodiment 1 (for comparison, not of the present invention)

[0097] The woven fabric made of 100% dyed red wool and previously neutralized by treatment with ammonia water is immersed in water, extruded to 100% fiber absorption rate, dried at 110°C for 10 minutes, and then subjected to 160°C / 5 minute heat treatment. The fabrics thus treated were washed 3 times using Procedure 5A (according to IWS Test Method TM 31 of International Wool Secretariat) followed by evaluation of shrinkage based on the two-dimensional change (according to Test Method TM 31 above).

Embodiment 2～7

[0099] Example 1 was repeated, except that instead of water treatment, the fabrics were padded in various treatment liquors. 100% fiber pick-up means that the fabric has twice the weight after pressing to dry the fabric prior to treatment with the solution. A Monsanto rating is given after treatment at 160°C, where this is evident on an appearance basis.

[0100] Examples 2-5 below are comparative examples, not according to the invention, while examples 6 and 7 relate to the treatment of woolen fabrics with compositions according to the invention.

[0101] Products for individual treatment fluids are as follows:

[0102] a) = polydimethylsiloxanes in which some of the methyl groups are replaced by amino groups. The siloxane contains no crosslinking moieties, ie no units of formula (III). Part of the end group of the polysiloxane chain is OH, and part of it is OCH 3 group.

[0103] b) = organopolysiloxanes having hydroxyl end groups, bearing units of the formula (II) and u...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention describes a composition with an organopolysiloxane which contains cross-linking units and can be further cross-linked. The composition also contains the reaction product of a diepoxide and a diamine. They can be used to treat fibrous materials, especially textile sheets, and can be applied thereon in the form of aqueous solutions or dispersions. Fabrics containing 50 to 100 wt% wool and which have been finished with the composition exhibit low shrinkage and low tendency to felting during laundering operations.

Description

technical field [0001] The present invention relates to compositions comprising specific organopolysiloxanes and reaction products of diepoxides and diamines. The invention also relates to the use of such compositions for the treatment of fiber materials, in particular textile fiber materials containing or consisting of wool. Background technique [0002] It is known to treat woolen materials with polymer compositions in order to control felting and shrinkage of the wool during laundering. Polymers used for this purpose include polyurethanes. The disadvantage of using polyurethane alone for anti-felting of wool is that in many cases the result is a markedly degraded hand level, especially when finishing normal grades of wool. [0003] Silicones have similarly been used to reduce wool's tendency to shrink and feel during the wash. By selecting suitable organopolysiloxanes it is possible to improve the hand of finished woolen articles compared to treatment with polyurethane...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L83/14D06M15/643C08L83/06C08G59/50C08L29/04C08L63/00C08L71/00C08L83/04C08L83/08D06M13/513D06M15/55D06M15/647D06M15/65D06M101/12
CPCC08G77/16C08G77/18C08G77/26C08G77/70C08L83/04C08L83/08D06M15/55D06M15/6436D06M15/647D06M15/65D06M15/652D06M2101/12D06M2200/45C08L2666/14
Inventor S·路德曼H·科洛巴克兹克T·安格勒J·雷德曼
Owner CIBA SPEZIALITATENCHEMPFERSEE