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Silicone composition and a paper treatment agent comprising the sameRelated Patent Categories: Synthetic Resins Or Natural Rubbers -- Part Of The Class 520 Series, Natural Rubber Compositions Having Nonreactive Materials (dnrm) Other Than: Carbon, Silicon Dioxide, Glass Titanium Dioxide, Water, Hydrocarbon, Halohydrocarbon, Ethylenically Unsaturated Reactant Admixed With A Preformed Reaction Product Derived From: (a) At Least One Polycarboxylic Acid, Ester, Or Anhydride; (b) At Least One Polyhydroxy Compound; And (c) At Least One Fatty Acid Glycerol Ester, Or A Fatty Acid Or Salt Derived From A Naturally Occurring Glyceride, Tall Oil, Or A Tall Oil Fatty Acid, At Least One Solid Polymer Derived From Ethylenic Reactants Only, Polyvinyl Alcohol, With Sicp, Spfi, Or Polymer ThereofSilicone composition and a paper treatment agent comprising the same description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070032596, Silicone composition and a paper treatment agent comprising the same. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS REFERENCES [0001] The present application is a 37 C.F.R. .sctn. 1.53(b) divisional of U.S. application Ser. No. 10/762,462 filed Jan. 23, 2004, which in turn claims benefits of Japanese Patent application No. 2003-016621 filed on Jan. 24, 2003, Japanese Patent application No. 2003-022759 filed on Jan. 30,2003, Japanese Patent application No. 2003-356119 filed on Oct. 16, 2003, and Japanese Patent application No. 2003-357041 filed on Oct. 16, 2003. The contents of each of those applications are incorporated by reference in this application. FIELD OF THE INVENTION [0002] This invention relates to a silicone composition and a paper treatment agent comprising the composition which is suitable to provide a paper substrate with water repellency and oil repellency. DESCRIPTION OF THE PRIOR ART [0003] Wrapping paper for food, food containers, and cooking paper are provided with water repellency, oil repellency to prevent oily or aqueous ingredients of the food from permeating the paper to soil its surroundings. The paper is provided also with non-tackiness to prevent the food from sticking to the paper to be deformed or broken when the food is taken out. [0004] To provide the water repellency, oil repellency and non-tackiness, various kinds of compounds having a perfluoroalkyl group have been used. Among such compounds, polymers made of monomers having a perfluoroalkyl group are known. The polymer is added in a form of an aqueous dispersion in a paper making process, which is called an internal addition method, or the polymer is dissolved in a treatment solution in which paper is to be soaked, which is called an external addition method. [0005] Concerning these methods, Japanese Patent Application Laid-Open, hereinafter referred to as JPA, No. 10-7738 describes improvement on solubility. JPA No. 2000-169735 describes a treatment method to prevent decrease in oil repellency. JPA No. 2001-98033 describes improvement of secondary processability. JPA 2002-220539 describes improvement on adhesion to paper. [0006] Another method is known where use is made of an amine salt of a phosphate ester having a perfluoroalkyl group. This salt has been used as widely as the aforesaid polymer. JPA No. 64-6196 and JPA No. 56-138197 describe improvement on stability of dispersion. JPA No. 2000-87013 and JPA No. 2000-144120 describe improvement on storage stability. [0007] However, use of the aliphatic fluorohydrocarbon atoms is restricted because they are ozone-depleting or globe-warming substances. Use of fluorine compounds having similar structures as the aliphatic flurohydrocarbon atoms may be restricted in the near future due to environmental concerns. In food application, too, possibility has been pointed out that a trace amount of hazardous substances containing fluorine occurs in cooking with a microwave oven. Similar possibility has been pointed out that hazardous substances containing fluorine such as hydrogen fluoride are exhausted in incineration of wastepaper. [0008] In the aforesaid background, it is desired to provide paper with water repellency, oil repellency and non-tackiness without using the compound having a perfluoroalkyl group. As a subsititute for the compound having a perfluoroalkyl group, a resin of polyvinyl alcohol, hereinafter referred to as PVA, has been used. Since the resin is highly hydrophilic, it gives good oil repellency to paper. On the other hand, it is difficult for the resin to give water repellency or non-tackiness due to its hydrophilicity. [0009] Meanwhile, silicones has been used to attain water repellency and non-tackiness. Therefore, using the silicone in combination with the PVA resin may substitute for the compound having a perfluoroalkyl group. However, the former is hydrophobic and the latter is hydrophilic, so that it is difficult to obtain a homogeneous or a stable mixture merely by mixing the both. [0010] Thus, an object of the present invention is to provide a stable composition comprising a silicone compound and a PVA resin. Another object of the present invention is to provide paper such as craft paper, high quality paper and corrugated cardboard, with oil repellency and water repellency by treatment with an agent comprising the composition. SUMMARY OF THE INVENTION [0011] The present inventors have made an intensive study to found that a stable composition can be obtained by mixing a specific organopolysiloxane (A) and a polyvinyl alcohol homopolymer or copolymer(C) in a specific ratio, and that paper treated with the composition has good water repellency, oil repellency, and non-tackiness. It has also been found that higher water repellency, oil repellency, and non-tackiness can be attained by applying to paper a composition comprising a specific organopolysiloxane (A) and a specific cross-linking agent (B), a polyvinyl alcohol homopolymer or copolymer(C), optionally a silane having a hydrolyzable group or a condensate thereof, and curing the paper. [0012] Thus, the present invention is a composition comprising the following components: [0013] 100 parts by weight of an organopolysiloxane (A), [0014] 50 to 1,000 parts by weight of a polyvinyl alcohol homopolymer or copolymer(C), [0015] 100 to 100,000 parts by weight of water (E), and [0016] 0.1 to 100 parts by weight of a surfactant (F), wherein component (A) is an organopolysiloxane (A1) represented by the following average compositional formula (1): [0017] wherein each R.sup.1 may be same or different and is a group having 1 to 20 carbon atoms selected from the group consisting of alkyl groups, alicyclic groups, and aryl groups, whose hydrogen atoms bonded to the carbon atoms may partly be replaced with a halogen atom or a cyano group, and X.sup.1 is the group represented by the following formula: [0018] wherein a1,b1 and d1 are such numbers that the organopolysiloxane (A1) has a viscosity at 25 degrees C of from 0.05 to 500 Pas, and b1 and d1 may be zero. [0019] The present invention is a composition comprising the following components: [0020] 100 parts by weight of an organopolysiloxane (A), Continue reading about Silicone composition and a paper treatment agent comprising the same... Full patent description for Silicone composition and a paper treatment agent comprising the same Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Silicone composition and a paper treatment agent comprising the same patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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