Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof
Reexamination Certificate
2001-03-30
2003-12-09
Gupta, Yogendra N. (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Chemical modification of textiles or fibers or products thereof
C008S115600, C008S128100, C008S128300, C510S276000
Reexamination Certificate
active
06660044
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a fiber product-treating agent for imparting (conferring or giving) an excellent durable press configuration such as a wrinkle-resistant effect and a durable press effect on the fiber product by a heating treatment with e.g. an iron after an application thereof.
PRIOR ART
An ironing on a shirt, a slack or the like is one of cumbersome operations. For relieving the operation, clothes subjected to a treatment imparting a durable press configuration with gaseous formaldehyde, a formaldehyde-releaser, liquid ammonia or the like are commercially available. Further, JP-B 7-26321 discloses a method for esterifying a polycarboxylic acid and cellulose and crosslinking the resultant ester by impregnating fibrous cellulose materials with a treatment solution containing a specific polycarboxylic acid and a specific curing catalyst and then heating them. Further, JP-A 7-189131 discloses a method for reinforcing a cellulose substrate containing a polyacid having at least two carboxy groups, a phosphorus-containing promoter (or accelerator) and an active hydrogen compound. On the other hand, JP-A11-158773 discloses a method for imparting a durable press configuration on a cellulose fabric with an aqueous solution comprising a specific water-soluble vinyl copolymer and an inorganic salt.
However, any effect of these methods is obtained by an ester-crosslink between a carboxylic acid and a hydroxyl group of cellulose. Thus, these are techniques useful for only fabrics and clothes (referred to collectively as cloths) having a high content of cellulose and no effect is recognized for cloths made of cellulose-free chemical fibers or wools or there is the problem that insufficient effect can be obtained for cloths having a low content of cellulose.
DISCLOSURE OF THE INVENTION
The invention relates to a fiber product-treating agent for imparting a durable press configuration by heating, which comprises 0.01 to 20 percent by mass of at least one of (i) two or more compounds forming mutually a crosslinked structure by heating and (ii) a compound forming a self-crosslinked structure by heating, and water, wherein the content of a nonvolatile matter is 0.01 to 30%.
The agent of the invention may include the balance of water.
The invention may include a concentrate of the above shown agent, which can be used by diluting it with water. The agent of the invention can be used by applying it to a fiber product, for example by spraying, impregnating, immersing or bathing, and heating the product while imparting a configuration to effect the crosslinking with heat and obtain a durable press configuration. The heating may be conducted with an iron, a presser for trousers or a pressing machine.
Further, the present invention relates to a fiber product-treating agent for imparting a durable press configuration by a heating treatment, which comprises 0.01 to 20 percent by mass of a vinyl polymer containing a monomer unit selected from the following monomer units (A), (B) and (C) (provided that if the monomer unit (C) is not selected, both of the monomer units (A) and (B) are selected), wherein the ratio of a sum of the monomer units (A), (B) and (C) is 50 to 100 mol-% of the total constituent monomer units, and the content of a nonvolatile matter is 0.01 to 30%:
the monomer unit (A): a vinyl monomer unit having a carboxy group,
the monomer unit (B): a vinyl monomer unit having a hydroxyl group, and
the monomer unit (C): a vinyl monomer unit having a carboxy group and a hydroxyl group.
The present invention includes the fiber product-treating agent which comprises 0.01 to 20 percent by mass of a vinyl polymer containing a monomer unit selected from the above-mentioned monomer units (A), (B) and (C) (provided that if the monomer unit (C) is not selected, both of the monomer units (A) and (B) are selected), wherein the ratio of a sum of the monomer units (A), (B) and (C) is 50 to 100 mol-% of the total constituent monomer units and whose pH value at 20° C. is 3.0 to 7.5.
In the present invention, the terms “self-crosslink” refers to a phenomenon in which the same kinds of a compound form a three-dimensional structure without a crosslinking agent and the terms “self-crosslinked structure” refers to a structure formed by the self-crosslink. The terms “the same kinds” refers to a combination of identical constitutional monomers in the polymer.
Furthermore, the crosslink in the present invention refers to a crosslink based on a covalent bond formed by mainly heating and then the crosslink makes a contribution to the durable press configuration. It is thinkable in the present invention that a crosslink formed by merely an evaporation of water makes no contribution practically to the durable press configuration.
When there are used (i) the above-mentioned two or more compounds forming mutually a crosslinked structure by heating, the durable press configuration can be obtained by forming a crosslinked structure of not only chemical fibers, wools and the like but also cellulose-containing fibers in the same way.
For example, (ii) the compound forming a self-crosslinked structure by heating includes the above-described vinyl polymer having a carboxy group and a hydroxyl group in one molecule. In this case, by conducting a heating treatment, such polymers can form an intramolecular or intermolecular self-crosslinked structure and can further form a crosslink with a cellulose molecule. Accordingly, the durable press configuration by the self-crosslink can be obtained even with a fiber product made of e.g. a cellulose-free chemical fiber or wool, while, with regard to a cellulose-containing fiber product, the higher durable press configuration can be obtained because of forming both of the self-crosslink and a crosslink with cellulose.
As shown above, the treating agent of the present invention can be used in order to obtain the durable press configuration regardless of the type of fibers even on a blended fabric or a mixed fiber spinning.
The invention provides a method of imparting a durable press configuration to a fiber product, which comprises applying, to the fiber product, the treating agent as defined above and heating it while imparting a configuration to impart the durable press configuration.
The durable press configuration may have a resistance to wrinkles, shrinks or creases or a smooth drying property. Alternatively it means a wash-wear property.
The smooth drying property is to obtain a dried fiber product being flat without wrinkles, shrinks or creases. The wash-wear property is wash and wear, that is, to obtain a fiber product such as clothing to wear without further heating, after washing and drying.
The invention can be applied to a fiber product such as a clothing product, yarns, fabrics, textile and a fiber article.
The invention provides a method of treating the fiber product with the treating agent as above defined.
The invention can impart a durable press configuration to a fiber product, a clothing product, a yarn product, soft goods or a textile product.
Modes for Carrying Out the Invention
In the treating agent of the present invention, at least one constituting the above-mentioned (i) or (ii) is preferably a polymer having a weight average molecular weight of 1,000 to 1,000,000. In this case, among the monomer units constituting the polymer, a monomer unit having at least one hydroxyl or carboxy group occupies preferably from 50 to 100 mol-% of the total monomer units. In addition, (ii) preferably contains a polymer having both of a hydroxyl group and a carboxy group. Further, the equivalent ratio of the carboxy group and the hydroxyl group, namely the carboxy group:the hydroxyl group, in the polymer at the case (ii) is preferably from 9:1 to 1:9.
Further, the treating agent of the present invention preferably comprises 0.005 to 10 percent by mass of a water-soluble inorganic salt.
Furthermore, the treating agent of the present invention preferably comprises 0.005 to 7.5 percent by mass of a silicone compound.
In the present invention, (i) or (ii) is
Hasegawa Miki
Igarashi Takako
Yoshida Yasushi
Yui Koji
Birch & Stewart Kolasch & Birch, LLP
Elhilo Eisa
Gupta Yogendra N.
Kao Corporation
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