This invention provides a polymer thick film electrically conductive paste composition, comprising conductive metal powder, a resin blend of polyol and phenoxy resin, blocked aliphatic polyisocyanate and one or more polar, aprotic solvents. In one embodiment the paste composition is used to form electrically conductive adhesive. In another embodiment the paste composition is used to form an electrically conductive polymer thick film.

Provided herein are systems and methods for forming a polymeric object. The systems and methods can use monomers having a first type of functional group that is capable of polymerizing upon exposure to radiation and a second type of functional group that is capable of polymerizing at a second condition. The monomers can be polymerized such that the polymeric object has a first and a second network of linkages.

A precursor formulation of a liner comprising a polymer and at least two curatives is disclosed. One of the at least two curatives comprises a curative formulated to preferentially react with the polymer and the other of the at least two curatives comprises a blocked curative formulated to be substantially unreactive with the polymer. A method of lining a rocket motor is also disclosed, as is a rocket motor including the liner.

A method for forming a multilayer coated film includes step (1) of applying an aqueous intermediate coating composition (A), step (2) of applying an aqueous base coating composition (B), step (3) of applying a clear coating composition (C), and step (4) of heat-curing the coated films. The coating composition (A) contains a specific hydroxyl group-containing acrylic resin (a1), a specific polyurethane resin (a2), a specific hydroxyl group-containing polyester resin (a3), a melamine resin (a4), and an active methylene-blocked polyisocyanate compound (a5). A ratio of the resin (a1) to the resin (a2) falls within a specific range. The heat-cured coated film of the coating composition (A) has a specific elongation at break, Young's modulus and Tukon hardness. The coating composition (C) contains a hydroxyl group-containing acrylic resin (c1) and an allophanate group-containing polyisocyanate compound (c2).

Crosslinkers based on alkoxysilanes and alkoxysilane mixtures containing an isocyanate group can be used as a starting component in the production of coating compositions or as paint binder component, or can be used with adhesive o sealant binders o binder components having g ups reactive toward alkoxysilane groups.

The present invention provides the following method for forming a multilayer coating film. The method comprises forming an uncured coating film of a specific primer paint composition (A) on a substrate, forming a top coating film of a specific top paint composition (B) on the uncured coating film, and simultaneously drying the films. The primer paint composition (A) is a paint composition comprising an epoxy resin (a1), a rust preventive pigment (a2), a color pigment (a3), and an extender pigment (a4); and the top paint composition (B) is a paint composition comprising an acrylic resin (b1) and an active methylene blocked polyisocyanate compound (b2).

The present invention relates to a process for bonding substrates, wherein the bond is a bond that can be released by heat treatment at a temperature of 50? C. to less than 200? C. and a composition is used to produce the bond, said composition containing a polymer of formula (I): Q-(OC(O)CRRC(O)R).sub.x, where: Q=a polymer group, selected from a polyester group and/or a polyolefin group, wherein the polymer group does not contain any components that result from the use of molecules having (meth)acrylic acid units as monomers; x is greater than or equal to 1; R.sup.1?R.sup.2 or OR.sup.3; R2=a hydrocarbon group, which can be substituted with halogen atoms, comprising 1 to 10 carbon atoms; R3=a hydrocarbon group, which can be substituted with halogen atoms, comprising 1 to 10 carbon atoms, or a polymer group; R=H, or a hydrocarbon group, which can be substituted with halogen atoms, comprising 1 to 10 carbon atoms, or a group of formula (II): C(O)NH-Q, where Q=an organic group which can also have one or more silicon atoms; and R=H or a group of formula (II), with the proviso that if neither of the groups R and R is a group of formula (II), then at least one of the groups R or R is H.

A curable composition includes a blocked isocyanate in which an NCO group of an isocyanate compound having a H.sub.6XDI skeleton is blocked by a blocking agent having an OCCHCO skeleton, a curable functional group-containing fluorine polymer, and an alkoxysilane having a functional group including at least one element of a group 15 element to a group 16 element of the periodic table (excluding oxygen). In the curable composition allowing a titanium oxide to be contained, the molar ratio of the curable functional group to the NCO group is 0.5 to 10; the content ratio of the alkoxysilane with respect to 100 pans by mass of the total amount of the blocked isocyanate and the fluorine polymer is 0.2 to 8 parts by mass; and the content ratio of the titanium oxide with respect to 100 parts by mass of the fluorine polymer is 0 to 200 parts by mass.

A paint replacement film comprising a polymer layer comprising a polyurethane produced from a formulation comprising at least one blocked isocyanate. The paint replacement film comprises a liner layer and the formulation comprises at least two polyols in OH weight equivalent ratio in the range 4.5:1 to 1:4.5. The formulation may comprise a colourant and the polyurethane may have a glass transition temperature (T.sub.g) below 42 C. Also disclosed is a method of producing a paint replacement film, by providing a backing layer, providing the liquid formulation, cast-coating the backing layer with the liquid formulation, and gelling the liquid formulation, thereby forming a polymer layer comprising polyurethane. The paint replacement films are useful for replacing paint on surfaces especially in automotive applications.

The invention relates a polyacrylate-polysilane block copolymer of general structure (I): wherein m and n independent of one another, are integers ranging from 2 to 4000; p is an integer ranging from 0 to 5; q is an integer ranging from 1 to 5; R.sup.1 represents hydrogen, straight-chain or branched alkyl group having 1 to 4 carbon atoms; R.sup.2 represents hydrogen, straight-chain or branched alkyl group having 1 to 18 carbon atoms; R3 represents hydrogen, hydroxyl group, straight-chain or branched alkyl group having 1 to 4 carbon atoms, or an C.sub.6-C.sub.14 aryl group; L is a linking moiety representing amine (NH) group, amide (C(O)NH) group, urea (NHC(O)NH) group, urethane (OC(O)NH) group or methylene (CH.sub.2) group; R.sup.4, R.sup.5 and R.sup.6 independent of one another, represents hydrogen, straight-chain or branched, alkyl group having 1 to 8 carbon atoms or polydimethylsiloxane group; and R.sup.7 represents hydrogen or methyl group.

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