Abstract:
Binder compositions for fiberglass are disclosed, comprising a polycarboxylic acid such as polyacrylic acid and a crosslinking agent. The crosslinking agent comprises a polyhydroxy component formed from a reaction of an epoxidized plant oil with an amine and optionally with a phenolic compound. The molar ratio of the amine to the epoxidized plant oil at the beginning of said reaction may be greater than 1:1. Methods of making the binders and fiber-containing composites made with said binders are also described.
Abstract:
(A) A reinforcing fiber, (B) a resin particle, and (C) a matrix resin are combined to prepare a resin composition which improves a reinforcing effect by the reinforcing fiber. The reinforcing fiber (A) contains a carbon fiber. The resin particle (B) contains a semicrystalline thermoplastic resin, the semicrystalline thermoplastic resin in the resin particle (B) has an exothermic peak in a temperature range between a glass transition temperature of the semicrystalline thermoplastic resin and a melting point of the semicrystalline thermoplastic resin, the peak being determined by heating the resin particle (B) at a rate of 10° C./min. by differential scanning calorimetry (DSC), and the resin particle (B) has an average particle size of 3 to 40 μm. The semicrystalline thermoplastic resin may be a polyamide resin having a melting point of not lower than 150° C. (particularly, a polyamide resin having an alicyclic structure and a glass transition temperature of not lower than 100° C., or a polyamide resin having a γ-type crystal structure or a degree of crystallinity of not more than 50%). The matrix resin (C) may be a thermosetting resin.
Abstract:
The fluorine-containing epoxy(meth)acrylate resin of the invention is represented by the following general formula (I). ##STR1## wherein R.sub.f is selected from the group consisting of --.phi.--C(CF.sub.3).sub.2 --.phi.--(where .phi. stands for ##STR2## --C(CF.sub.3).sub.2 --.phi.'--C(CF.sub.3).sub.2 --(where .phi.' stands for and --CH.sub.2 (CF.sub.2).sub.6 CH.sub.2 --; n is zero or a positive interger; and X is hydrogen or methyl group. The resin of the invention may be prepared by reacting a diglycidyl ether of a fluorine-containing hydrocarbon (R.sub.f) with acrylic acid or methacrylic acid. Further provided is an adhesive composition comprising the aforementioned fluorine-containing epoxy(meth)acrylate resin and a photo-polymerization initiator, which can be cured at room temperature within a short time by irradiation with UV rays to form a cured product having a refractive index N.sub.D.sup.20 ranging from 1.434 to 1.532. The adhesive composition of the invention has a particular utility when used to form a part or zone contacting with a quartz glass or glass fibers, since it is improved in matching of the refractive index with those of the quartz glass and optical fibers.
Abstract:
The disclosure describes novel condensation products having superior throwing power suitable as electrodeposition paint binders which are the partially neutralized reaction products of a polyepoxide and monocarboxylic acids containing at least 50 percent by weight of ethylenically unsaturated fatty acids, said reaction product having been further esterified with at least 4 percent by weight of an ethylenically unsaturated polycarboxylic acid or anhydride thereof and subsequently reacted with an oilsoluble, heat-non-reactive phenolic resin. The disclosure also describes the process for producing the above-described novel composition.
Abstract:
A method is provided for producing resins or esters from starting esterifiable components and polyunsaturated, nonconjugated fatty acids whereby the mass is heated in intimate admixture with sulfur dioxide gas to effect conjugation in situ and also rearrangement to provide increased isolated trans double bonds. The esterifiable components are suitably epoxy resins or alkyd-forming mixtures.