 Thermoplastic adhesive compositions |
| OF THE INVENTION It has now been discovered and forms a unique feature of this invention that ... |
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| Terblends and films of LLDPE, LMW-HDPE and HMW-HDPE |
| OF THE INVENTION The blends of this invention which exhibit improved extrusion characteristics ... |
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| Release agent composition |
| OF THE INVENTION The objectives of this invention are achieved by release agent composition ... |
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| Coating compositions prepared from hydroxyl functional graft copolymers |
| OF THE INVENTION The ungelled, hydroxyl functional graft copolymer of the present invention is ... |
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| Solid state thermosensitive polymer compositions |
| OF THE INVENTION Representative devices and apparatus useful in this invention are disclosed in U.S... |
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| Contact adhesive and adhesive system for EPDM and related elastomers |
| OF THE INVENTION The term "EPDM" is used in the sense of its definition as found in ASTM-D-1418-64 ... |
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| Making rubber blends of diene rubber & EPR or EPDM |
| I claim: 1. The process of producing a rubber blend by masticating a mixture of (A) monoolefin ... |
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| Flame-retardant olefinic resin composition |
| OF THE INVENTION The present invention is explained specifically with reference to Examples and C... |
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| Polymer alloy |
| OF THE INVENTION The highly unsaturated rubbery polymer which is utilized in the alloys of the ... |
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Insect pest-repelling film or sheet
| Details |
Inventors: Kitamura, Shuji; Nakae, Kiyohiko; Kotani, Kozo; Kume, Takanori; Negawa, Hideo; Ikeda, Tsuneta;
Assignee: Sumitomo Chemical Company, Limited (Osaka, JP)
Primary Examiner: Buffalow; Edith
Assistant Examiner:
Attorney, Agent or Firm: Birch, Stewart, Kolasch & Birch
An insect pest-repelling film or sheet is disclosed, having a reflective spectrum in a ultraviolet region of a wavelength of less than 0.4 .mu.m, particularly a reflective spectrum peak at a wavelength of less than 0.4 .mu.m, a reflective spectrum having not less than 1.4 of a ratio (R.sub.A /R.sub.B) of the ultraviolet reflectance (R.sub.A) and a visible light reflectance of a wavelength of 0.5 .mu.m (R.sub.B) and a visible light transmission of not less than 40%. The film is useful as a cover of houses and tunnels or mulching of ground for crop culture or as a repellent for various insect pests in agriculture, forestry, and gardening. |
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DETAILED DESCRIPTION OF THE INVENTION This invention provides an insect pest-repelling film or sheet which has a reflective spectrum in a ultraviolet region of a wavelength of less than 0.
4 .
mu.
m, particularly a reflective spectrum peak at a wavelength of less than 0.
4 .
mu.
m, a reflective spectrum having not less than 1.
4 of a ratio (R.
sub.
A /R.
sub.
B) of the ultraviolet reflectance (R.
sub.
A) and the visible light reflectance of a wavelength of 0.
5 .
mu.
m (R.
sub.
B) and a visible light transmission of not less than 40%.
The starting resin used for the film or sheet of this invention includes all kinds of conventional thermoplastic resins.
Suitable examples of the resin are ethylene homopolymer or copolymers such as low-density polyethylene, high-density polyethylene, ethylene-butene-1 copolymers, ethylene-4-methylpentene-1 copolymers, ethylene-vinyl acetate copolymers, ethylene-acrylic acid copolymers, ethylene-methyl methacrylate copolymers, ethylene-vinyl acetate-methyl methacrylate copolymers, ethylene-ethyl acrylate copolymers, etc.
; polypropylene; vinyl chloride resins; and the like.
These resins may be used alone or in a combination of two or more thereof.
The insect pest-repelling film or sheet of this invention includes any kinds of films or sheets having the specific ultraviolet and visible light reflective spectra as mentioned above, and can be prepared by incorporating a specific inorganic compound having such reflective spectra into the resins as mentioned above.
The inorganic compound used in the present invention includes all compounds having an ultraviolet reflectance in a wavelength of less than 0.
4 .
mu.
m and preferably having a reflective peak in this region, and the film or sheet incorporated with the inorganic compound has such reflective spectrum characteristics that a ratio (R.
sub.
A /R.
sub.
B) of the ultraviolet reflectance of a wavelength of less than 0.
4 .
mu.
m (R.
sub.
A) and the visible light reflectance of a wavelength of 0.
5 .
mu.
m (R.
sub.
B) is not less than 1.
4, more preferably not less than 1
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Adhesives and Rubbers 
