摘要:
The present invention relates to coumarin derivatives of formula (I), as well as to novel polyols and polyurethanes containing said compound of formula (I) which are photocrosslinkable, as well as their production and uses.
摘要:
A problem is to provide, in the field of polyhydroxy polyurethane resins the development of applications of which has not moved ahead by conventional technologies, a self-crosslinking polyhydroxy polyurethane resin, which enables to provide products, such as imitation leathers, excellent in abrasion resistance, chemical resistance, heat resistance and the like, and moreover, which is useful from the viewpoint of a reduction in greenhouse gas, contains carbon dioxide incorporated and fixed therein, and is responsive to environmental conservation. Provided are a self-crosslinking, polysiloxane-modified, polyhydroxy polyurethane resin having masked isocyanate groups in a structure of a polysiloxane-modified, polyhydroxy polyurethane resin derived from a reaction of a 5-membered cyclic carbonate compound and an amine-modified polysiloxane compound and having polysiloxane segments therein; a production process of the self-crosslinking resin; a resin material containing the self-crosslinking resin; and an imitation leather composed of a base fabric and a resin composition composed of the self-crosslinking resin as its principal component and impregnated in or laminated on the base fabric.
摘要:
Provided are a self-crosslinking polysiloxane-modified polyhydroxy polyurethane resin derived from a reaction of a 5-membered cyclic carbonate polysiloxane compound represented by the following formula (1) and an amine compound and having polysiloxane segments and masked isocyanate groups in its structure: wherein A means and its production process. The present invention can provide a polyhydroxy polyurethane resin, the development of applications of which has not moved ahead in the prior art, as a novel self-crosslinking polyhydroxy polyurethane resin that enables to provide products excellent in lubricity, abrasion resistance, chemical resistance, non-tackiness, heat resistance and the like, is useful from the viewpoint of the reduction of warming gas, and is responsive to the environment.
摘要:
The paste composition of the present invention is a paste composition comprising (i) a polyurethane resin which comprises (a) a recurring unit represented by the formula (1) and (b) a recurring unit represented by the formula (2), a molar fraction of said recurring unit (a) being in the range of 0.35 to 0.99, a molar fraction of said recurring unit (b) being in the range of 0.01 to 0.65, the total of both the molar fractions being 1, (ii) a solvent and (iii) a powder. By the use of the paste composition, dielectric layers, sealing products, barrier ribs, phosphors, etc. can be favorably formed.
摘要:
A novel composition of matter is provided, which comprises certain polydiene-functionalized polyisocyanate oligomer and certain polydieneophile-functionalized epoxy-amine adduct, which polyisocyanate oligomer and epoxy-amine adduct are reactive at elevated cure temperature. The polydieneophile-functionalized epoxy-amine adduct comprises the reaction product of certain polyhydroxy functional epoxy-amine reactanc with dieneophile functional mono-isocyanate reactant. The polydiene-functionalized polyisocyanate oligomer comprises the reaction product of polyisocyanate reactant, preferably a triisocyanate, with approximately equal molar equivalent amount of monohydroxy diene reactant or monoamino diene reactant or like isocyanate-reactive diene reactant. The crosslinkable composition of matter is useful in coating and other applications, especially cathodic electrocoating applications.
摘要:
An adhesive system that can be used for bonding together fiberglass reinforced polyester (FRP) panels is provided. The adhesive system is comprised of a "hardener component" containing a polyester or polyether triol, paraphenylene diamine or ortho-phenylene diamine, and desirably a tin compound catalyst, and a "base component" containing an aromatic diisocyanate. The two components are mixed together just prior to bonding and the mixture is spread on the FRP panel surfaces desired to be bonded together. The panels are assembled and held clamped together until the adhesive sets.
摘要:
A curable composition is provided, comprising: (A) a binder composition; and (B) a polysiloxane resin comprising aromatic functional groups and terminal active hydrogen groups. The composition may be used to prepare articles of manufacture and coated articles, such as footwear components. The composition may additionally be used to mitigate dirt build-up on a substrate.