Abstract: According to the invention there is provided a hot melt composition comprising (A) a hydrogenated resin having a softening point ranging from 60.degree. C. to 130.degree. C., said hydrogenated resin (A) being prepared by hydrogenating a resin at a hydrogenation percentage of aromatic rings of from 10 to 90%, said resin being prepared by copolymerizing at least two components comprising (a) 100 parts by weight of cyclopentadiene or its derivative selected from the group consisting of cyclopentadiene and dicyclopentadiene and an alkyl substituent thereof and (b) 5 to 50 parts by weight of indene or its derivative selected from the group consisting of indene and an alkyl substituent thereof and (B) one or more compound selected from the group consisting of ethylene-unsaturated ester copolymers, polyester resins and waxes.

Abstract: An alcoholic varnish comprising an alcoholic solution of a hydroxyl group-containing copolymer resin of cyclopentadiene, dicyclopentadiene or an alkyl-substituted derivative thereof and a compound, such as allyl alcohol, having at least one double bond and at least one hydroxyl group in the molecule. In one embodiment, this invention relates to an alcoholic varnish comprising an alcoholic solution of said hydroxyl group-containing resin and at least one known alcohol soluble resin such as maleinated rosin or alkyd resin.

Abstract: Hot melt type traffic paint compositions contain as binders partially ring-hydrogenated resins derived by hydrogenating from 20 to 70% of the aromatic rings of an aromatic hydrocarbon resin obtainable by polymerization in the presence of a Friedel-Crafts catalyst of fractions prepared so as to have a conjugated diolefin content of not more than 1.0 wt % and in a ratio of not more than 3.0% with respect to the total amount of polymerizable ingredients and a total content of indene and its alkyl derivatives of not more than 4.0 wt % and in a ratio of not more than 12.0% with respect to the total amount of polymerizable ingredients, said fractions obtained by distillation of cracked oil fractions which have boiling points in the range from 140.degree. to 220.degree. C. and are prepared by cracking of petroleum. These traffic paint compositions provide a favorable antiweathering property, heat resistance and flow characteristics.

Abstract: A varnish composition for offset printing inks, said composition comprising[A] 100 parts by weight of a resin having a softening point of at least 100.degree. C. and an acid value of 5 to 50, said resin being produced by reacting 100 parts by weight of (I) a hydrocarbon resin obtained by polymerizing (a) a 5-membered cyclic compound having a conjugated double bond and expressed by the following general formula ##STR1## wherein H represents hydrogen, R represents an alkyl group having 1 to 3 carbon atoms, m and n or 0 or an integer of at least 1, and m+n equals 6, and/or its Diels-Alder adduct, with 1 to 15 parts by weight of (b) an unsaturated carboxylic acid and/or its anhydride to form (II) an acid-modified resin, reacting the acid-modified resin (II) with 0.1 to 1.0 molar equivalent based on the acid groups in the acid-modified resin (II), or 0.2 to 2.

Abstract: A process for producing a curable resin is provided which comprises the steps of polymerizing a five-member cyclic compound (A) having an unsaturated conjugated double bond and represented by the general formula (A) given below; ##STR1## (wherein R is an organic residue having from 1 to 3 carbon atoms; m and n are integers and are in the relation of m+n=6)or Diels-Alder addition product thereof (A) with at least one phenolic compound (B) selected from the group consisting of monohydric and polyhydric phenols and alkyl substituents thereof to obtain a resin (I) having at least one phenolic hydroxyl group and an average molecular weight of from 300 to 2000; hydrogenating said resin (I) to convert the aromatic ring of the phenolic compound unit into the cyclohexane structure thereby to obtain a resin (II); and esterifying said resin (II) with an .alpha., .beta.-unsaturated carboxylic acid (C). A curable coating composition is also provided which comprises as vehicle the above curable resin.

Abstract: A process for preparing a curable coating resin comprising the steps of hydrogenating selectively the double bonds of a resin produced from a five-membered cyclic compound such as dicyclopentadiene and an unsaturated hydroxyl group-containing compound such as allyl alcohol and then esterifying the thus hydrogenated hydroxyl group-containing resin with acrylic and/or methacrylic acid thereby to obtain a curable coating resin; and a curable coating resin obtained by said process.

Abstract: A paper size obtained by the steps of treating with an acid a hydrocarbon distillate boiling within the range of 20.degree.-80.degree. C. and containing at least one C.sub.5 acyclic conjugated diolefin in an amount of 10 to 35 wt. % of the distillate, the distillate being derived from a fraction obtained as a by-product at the time of cracking petroleum, reacting said hydrocarbon distillate with an .alpha.,.beta.-unsaturated carboxylic acid in a specified weight ratio and then saponifying the thus obtained acid-modified hydrocarbon distillate with an alkali thereby to obtain the paper size.

Abstract: A composite resinous composition is provided, which essentially comprises an aromatic hydrocarbon resin and an epoxy resin. The aromatic resin has its source from petroleum fractions produced during the thermal cracking of naphtha, kerosene or gas oil. Such fractions boiling in the range of 140.degree.-280.degree. C. are polymerized with a relatively large amount of phenols, the resulting polymer being highly compatible with commercially available epoxy resins.

Abstract: A resin for printing inks, prepared by the reaction of (A) a conjugated double bond-containing five-membered cyclic compound such as dicyclopentadiene, (B) a phenolic compound such as phenol, (C) an unsaturated carboxylic acid such as maleic anhydride and (D) a resol-type phenol resin obtained from phenol or an alkyl-substituted phenol and formaldehyde. In one embodiment, this invention relates to a process for the preparation of said resin for printing inks.

Abstract: A process for preparing a curable coating resin comprising the steps of hydrogenating selectively the double bonds of a resin produced from a five-membered cyclic compound such as dicyclopentadiene and an unsaturated hydroxyl group-containing compound such as allyl alcohol and then esterifying the thus hydrogenated hydroxyl group-containing resin with acrylic and/or methacrylic acid thereby to obtain a curable coating resin; and a curable coating resin obtained by said process.

Abstract: The present invention provides a method for producing curable resin which comprises reacting acrylic acid and/or methacrylic acid [which is hereinafter cited as (metha-) acrylic acid] with hydroxyl group-containing resin (I) obtained by reacting a five-member cyclic compound having an unsaturated conjugated double bond represented by the general formula (A) given below; ##STR1## (WHEREIN R is an organic residue having from 1 to 3 carbon atoms; m and n are integers and are in the relation of m+n=6) or the Diels-Alder addition product thereof (A) and a compound (B) having both reactive carbon-carbon double bond or bonds and towo or more hydroxyl groups within one and the same molecule thereof. In accordance with the present invention, curable coating composition comprising said curable resin can also be obtained. The resin of this invention can be very quickly cured by the exposure to heat or radiation.

Abstract: Curable coating compositions particularly suitable as a vehicle for printing inks, comprising a resin obtained by esterifying with acrylic or methacrylic acid a hydroxyl group-containing resin prepared either by reacting ingredients (A) and (B) to form a reaction mixture which is then reacted with ingredient (C) or by reacting the ingredients (A), (B) and (C). The ingredient (A) is a five-membered cyclic compound having conjugated double bonds or a Diels-Alder's reaction product thereof, the ingredient (B) a compound having both a polymerizable double bond and a hydroxyl group in the molecule and (C) a resol type phenolic resin.

Abstract: Printing ink composition characterized by containing as a vehicle a resin having a softening point of 100.degree. C. or more and acid value of 5 to 50, said resin being obtained by reacting the following three components A, B and C, i.e., cyclopentadiene, dicyclopentadiene or their alkyl substituted derivatives as the A component an .alpha.,.beta.-unsaturated monocarboxylic acid as the B component and alkyl esters of said monocarboxylic acid as the C component, in proportions of such amounts as to satisfy the following formulae, ##EQU1## at a temperature in the range of 150.degree. - 350.degree. C. in the absence of a catalyst.

Abstract: Resins for printing ink and particularly offset ink, are produced by reacting a resin obtained by heat polymerizing at least one of cyclopentadiene, dicyclopentadiene or their alkyl substituted derivatives with 1-3 carbons and an unsaturated alcohol or unsaturated alcohol ester of an organic acid at a temperature of 150-350.degree. C. in the presence or in the absence of an inert hydrocarbon solvent with a higher monohydric saturated fatty acid or higher monohydric unsaturated fatty acid or their mixtures to produce a resin having a softening point of 100.degree. C or more.

Abstract: A process for removing unreacted monomers or solvents from synthetic rubber latex or synthetic resin latex comprising bringing said latex into contact with an inert gas fluid at a temperature ranging from 40.degree. to 100.degree. C by feeding said latex into the upper part of a wetted-wall tower without imposing any substantial mechanical shear stress.

Abstract: An apparatus detects a leakage position between the upstream and downstream points of a fluid passage, where the fluid leaks. The flow rate of the fluid is detected both at the upstream and downstream points repeatedly at intervals much shorter than a difference .DELTA..tau. between time .tau..sub.1 and time .tau..sub.2 which elapse until a flow rate change appears respectively at the upstream and downstream points. Thus the pattern of the flow rate variation is detected with respect to the time .tau..sub.1 and the time .tau..sub.2, thereby obtaining the time difference .DELTA..tau.. Based on the time difference .DELTA..tau., the distance x between the upstream and downstream points is obtained, thus locating the fluid leakage position, by the following formula: ##EQU1## where l denotes the distance between the upstream and downstream points, and a the speed of sound through the fluid.

Abstract: A method for producing a resin for printing ink, which comprises reacting a dicylopentadiene resin with an unsaturated carboxylic acid or its anhydride, the proportion of the unsaturated carboxylic acid or its anhydride being 0.01 to 0.5 mol per 100 g of the dicyclopentadiene resin, and then esterifying the acid-modified resin so obtained with an aliphatic monohydric alcohol in an amount of 0.2 to 2.0 mols per mol of the unsaturated carboxylic acid or its anhydride used in the reaction.

Abstract: A process for preparing a thermoplastic resin containing polar groups and unsaturated bonds which comprises reacting (A) five-membered cyclic compounds containing unsaturated conjugate double bonds, (B) unsaturated carboxylic acids or the anhydrides thereof and (C) monohydric saturated or unsaturated alcohols in a specified molar ratio.

Abstract: A process for preparing a resin suitable for preparation of sizes, which comprises polymerizing a cracked oil fraction which is obtained by the thermal cracking of petroleums, has a boiling point of 20.degree. to 220.degree.C., and contains diolefins, thereby to form a hydrocarbon resin, reacting the resulting hydrocarbon resin with an unsaturated dicarboxylic acid or its anhydride, and heating the acid-modified resin in the presence of water or an alkali metal hydroxide at a temperature of 130.degree. to 350.degree.C.