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AssigneeKanegafuchi Kagaku Kogyo Kabushiki Kaisha
InventorsSadao Yukimoto, Toshifumi Hirose, Katsuhiko Isayama
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A method of coating the cured product of an oxyalkylene polymer having reactive silicon groups with an alkyd paint. The oxyalkylene polymer is combined with a high-molecular weight plasticizer and the composition is cured and the cured product coated with an alkyd paint.
A method of coating the cured product of an oxyalkylene polymer with an alkyd paint comprising
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
With organic compounds: containing silicon
Coating: with only one layer of a composition containing a polymer binder
Coating: improving the adhesiveness of the coatings per se, e.g. forming primers
Coating: forming abrasion-resistant coatings; Forming surface-hardening coatings
Term ended 22 Dec 2008 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The present invention relates to a method of applying alkyl paints to the cured product of an oxyalkylene polymer having a silicon-containing group that has a hydroxyl group or a hydrolyzable group bonded to a silicon atom and is capable of crosslinking by forming a siloxane bond (this silicon-containing group is hereinafter referred to as a reactive silicon functional group).
Similar to room-temperature curable silicone rubbers, oxyalkylene polymers having a reactive silicon functional group are cured with moisture in the air or the like at room temperature to provide a rubbery product. The resulting cured product has excellent characteristics, e.g., high elongation, strength and adhesion, and thus is useful in such applications as sealants and adhesives.
One of the advantages offered by oxyalkylene polymers having a reactive silicon functional group is that because their backbone chain is composed of an oxyalkylene polymer, the surface of their cured product can be coated with almost all paints in common use. In contrast, silicone rubbers, when cured, provide a water-and oil-repellent surface and coating them with paints is impossible in practice.
An oxyalkylene polymer having at least one reactive silicon functional group in its molecule [this polymer is hereinafter referred to as oxyalkylene polymer (A)]is used in the present invention. Examples of oxyalkylene polymer (A) are disclosed in many patents such as U.S. Pat. Nos. 3,971,751, 3,979,384, and 4,323,488, and JP-B- No. 45-36319, JP-B- No. 46-12154 and JP-B- No. 4932673, as well as in JP-A- No. 50-156599, JP-A- No. 51-73561, JP-A- No. 54-6096, JP-A- No. 55-82123, JP-A- No. 55-123620, JP-A- No. 55-125121, JP-A- No. 55-131022, JP-A- No. 55-135135 and JP-A- No. 55-137129 (the terms "JP-A" and "JP-B" used herein means an unexamined published Japanese patent application and examined Japanese patent publication, respectively). The disclosure of these patents and publications are incorporated herein by references.
The molecular chain of oxyalkylene polymer (A) preferably has a recurring unit that is represented by the general formula:
--R.sup.1 --O--