Provided is a thermoplastic resin film of which adhesive force can be easily adjusted to lie within an appropriate range when the thermoplastic resin film is bonded to other members such as a glass plate. A thermoplastic resin film according to the present invention includes a thermoplastic resin, and a compound represented by the following formula (1). In the formula (1), R1, R2, R3, R4 and R5 each represent a hydrogen atom, an alkyl group, a carboxyalkyl group, a group that is a salt of a carboxyalkyl group and alkali metal, or a group that is a salt of a carboxyalkyl group and alkaline earth metal, and at least one of R1, R2, R3, R4 and R5 represents a carboxyalkyl group, a group that is a salt of a carboxyalkyl group and alkali metal, or a group that is a salt of a carboxyalkyl group and alkaline earth metal.

A resin film for laminated glass, laminated glass including the resin film, and a process for manufacturing the laminated glass are disclosed. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 μm and a maximum static friction coefficient at 20° C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35° C. is 40 to 310 μm/N.

A polymeric film comprising a polyvinyl acetal resin a plasticizer and a blending agent containing an aliphatic ring and at least one hydroxyl group are disclosed. A laminate is also described where the polymeric film is used as the interlayer between two transparent materials such as glass. The laminate made using the polymeric film has excellent optical and impact resistance properties.

The method of producing a polyvinyl butyral resin of the present disclosure enable manufacture of a film of which yellow index is low and durability is enhanced, when a film for lamination is manufactured, by advancing acetalization reaction of a polyvinyl alcohol resin and a butanal in the presence of a hydroxy butyric acid.

Provided is an interlayer film for laminated glass which has high heat shielding properties, a high visible transmittance, and excellent light resistance which enables retention of the high visible transmittance for a long period of time. The interlayer film for laminated glass according to the present invention has an interlayer film for laminated glass with a single layer structure or a laminated structure of two or more layers, the interlayer film for laminated glass according to the present invention comprises a first layer, and the first layer contains a polyvinyl acetal resin; a plasticizer; a tungsten oxide particle; a magnesium salt of an organic acid having a branched structure; and a metal salt of a C2 to C8 organic acid, other than the magnesium salt of an organic acid having a branched structure.

To provide a heat-ray shielding film mainly composed of polyvinyl acetal resin and a method for manufacturing the same capable of exhibiting excellent optical characteristics and high weather resistance by using composite tungsten oxide fine particles having a high heat-ray shielding effect, and a heat-ray shielding laminated transparent base material using the heat-ray shielding film, the heat-ray shielding film containing fine particles having a heat-ray shielding function, polyvinyl acetal resin, and a plasticizer, wherein the fine particles having the heat-ray shielding function is expressed by a general formula MyWOz (wherein N is one kind or more elements selected from a group consisting of Cs, Rb, K, Tl, In, Ba, Li, Sr, Fe, Sn, Al, and Cu, satisfying 0.1y0.5, 2.2z3.0), which are composite tungsten oxide fine particles having a hexagonal crystal structure, the heat-ray shielding film further containing metal carboxylate.

Laminated glass consists of two glass sheets interlayered with at least one film A containing a polyvinyl acetal PA and optionally at least one plasticiser WA, at least one film B containing a polyvinyl acetal PB and at least one plasticiser WB and polymer film C, wherein film A comprises less than 16% by weight of plasticiser WA, film B comprises at least 16% by weight of plasticiser WB, film C comprises polyamide, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyvinyl alcohol (PVA), polylactic acid (PLA), cellulose acetate or ionomers, and wherein film C is located between film A and film B.

An object includes at least two faces which are suitable for dry adhesion and differ in their adhesion parameters. By suitable structuring, it is possible, where appropriate in combination with a suitable contact pressure, to selectively control the detachment of surfaces contacted on these faces.

Provided is an interlayer film for laminated glass capable of enhancing the sound insulating property over a wide range of temperature from 0 C. to 40 C. An interlayer film for laminated glass according to the present invention is an interlayer film for laminated glass having a one-layer structure or a two or more-layer structure, the interlayer film includes a resin layer, and a ratio of a first storage modulus G at a peak temperature of a maximum peak of tan to a second storage modulus G at a temperature 100 C. higher than the peak temperature of the maximum peak of tan is 50 or more and 500 or less in viscoelasticity measurement at a frequency of 1 Hz in a shearing mode.

Provided is an interlayer film for laminated glass capable of suppressing the discoloration by the light and heat in an interlayer film including a resin layer colored with a coloring agent. The interlayer film for laminated glass according to the present invention has an infrared reflective layer, and a first resin layer containing a thermoplastic resin, the first resin layer is arranged on a first surface side of the infrared reflective layer, the infrared reflective layer has a first maximum reflection wavelength at a wavelength of 350 nm to 450 nm, and a second maximum reflection wavelength at a wavelength of 800 nm or more, each of reflectance at the first maximum reflection wavelength and reflectance at the second maximum reflection wavelength is 15% or more, and the first resin layer contains a coloring agent.