Loading patent…
AssigneesFujikura Kasei Co., Ltd., Toyota Jidosha Kabushiki Kaisha
InventorsHiroya Dejima, Hiroyuki Kai, Kenji Kawazu
Estimating the term…
An expandable coating composition, yields a coating film having elasticity, a soft feeling, and strength which are sufficient for an instrument panel of an automobile by simple processes. An expandable coating composition yields an expanded coating film and contains (a) a polyol compound, (b) an isocyanate compound, and (c) water; the (a) polyol compound reacts with a part of the (b) isocyanate compound, thereby yielding polyurethane resin; the remaining (b) isocyanate compound reacts with the (c) water, thereby yielding carbon dioxide; the polyurethane resin has a breaking strength of 5 N/cm2 or greater and less than 200 N/cm2 in a case in which an elongation percentage thereof is 100% or less; and the polyurethane resin has a breaking strength of 5 N/cm2 to 1,500 N/cm2 in a case in which an elongation percentage thereof is more than 100%.
An expandable coating composition which can produce an expanded coating film and which contains (a) a polyol compound, (b) an isocyanate compound, and (c) water;
A production method for an expanded coating film comprising the steps of:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Backward citations are indexed for grants only.
Characterised by the compounds used containing active hydrogen: high-molecular-weight compounds
Foam properties: prepared using water as the sole blowing agent
Compositions for coatings: compositions for foaming; Foamed or intumescent coatings
Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
Term end not estimated
1. Field of the Invention
The present invention relates to an expandable coating composition, a coated product comprising an expanded coating film, and a production method for an expanded coating film, which are suitably used for an instrument panel provided in an automobile, for example.
2. Description of the Related Art
Polyol compound (DESMOPHEN® 1150 marketed by SUMITOMO BAYER URETHANE CO., LTD; OH value: 155 mgKOH/g), isocyanate compound (diphenylmethanediisocyanate; NCO % (mass ratio of NCO): 33.6%), water, and curing catalyst (dibutyltindilaurate and ethylenediamine) were mixed in the proportions shown in Table 1 and an expandable coating composition was prepared. Moreover, the molar ratio between an OH group of the polyol compound and an NCO group of the isocyanate compound is 1.0.
The obtained expandable coating composition was coated uniformly on a base plate made of ABS so that the coating thickness was 100 μm. After leaving it at room temperature for 3 minutes, the base plate coated with the expandable coating composition was maintained at 80° C. for 1 hour, and thereby polyol compound reacted with a part of isocyanate compound and yielding polyurethane resin, together with the remaining (b) isocyanate compound reacting with water and yielding carbon dioxide. Thereby, an expanded coating film having a thickness of 500 μm was prepared.
After this, elasticity (a soft feeling) and strength of the obtained expanded coating film were measured by the following methods. The results are shown in Table 1.