 Hot melt type traffic paint compositions |
| OF THE INVENTION The present invention relates to the use of resins as binders for traffic paints, ... |
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| Traffic marking paint |
| The term "non-aqueous resin dispersion" as used herein means a dispersion in which a resin is ... |
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| Polyolefin-based resin composition |
| OF THE PREFERRED EMBODIMENTS The polymeric component (a) according to the inventive composition is ... |
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| Latex paint formulations and methods |
| OF THE INVENTION According to the invention, a paint with an internal phase comprising pigment and ... |
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| Fast dry waterborne traffic marking paint |
| OF CERTAIN PREFERRED EMBODIMENTS The waterborne paints of the present invention have very rapid ... |
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| Method for applying a night-visible traffic stripe to a road |
| The preferred apparatus of the present invention for applying a traffic stripe to a road surface ... |
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| Method of producing wear resistant traffic markings |
| What is claimed is: 1. A traffic marking on a road surface prepared in accordance with the method ... |
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| Organic-inorganic mortar |
| What is claimed is: 1. Curable two-component mortar composition with curable organic and curable ... |
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| Thermoplastic olefin alloys and method for producing the same |
| The present invention, therefore, provides a TPO having desirable resiliency, impact strength, ... |
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Viscosity index improver and method for producing the same
| Details |
Inventors: Ohsumi, Tatsuya; Yoshida, Shigeyuki; Kano, Yoshio; Sakai, Kouzou;
Assignee: Sanyo Chemical Industries, Ltd. (Kyoto, JP)
Primary Examiner: Schofer; Joseph L.
Assistant Examiner: Nagumo; M.
Attorney, Agent or Firm: Armstrong, Nikaido, Marmelstein, Kubovick & Murray
Disclosed is a viscosity index improver in the form of a high-concentration non-aqueous dispersion of a low-viscosity olefinic polymer and a method of preparing the same. The improver comprises (1) an olefinic polymer, (2) a compound of (i) or (ii), (i) being a compound having at least one segment comprising A and B wherein A is a residue of a compound substantially composed of a hydrocarbon having a weight average molecular weight of 500 to 500,000 and having hydroxyl and/or carboxyl and/or carbonyl and/or amino and/or dithiocarboxyl group(s) and B is a residue of a compound having carboxyl and/or hydroxyl and/or isocyanate and/or amino and/or ketomine group(s), said A and B being bonded through at least one linkage selected from ester linkage, thioester linkage, urethane linkage, urea linkage, amide linkage, imide linkage and ether linkage, and (ii) being a reaction product of AA and BB wherein AA is an olefinic polymer having a weight average molecular weight of 500 to 500,000 and added with ethylenic unsaturated dicarboxylic acid(s) and BB is a compound having at least one group selected from mercapto group, amino group, ketimine group, hydroxy group and isocyanate group, said AA and BB being bonded through at least one linkage selected from thioester linkage, amide linkage, imide linkage and ester linkage, and (3) a medium which does not substantially dissolve or which scarcely dissolves the said olefinic polymer. |
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DETAILED DESCRIPTION OF THE INVENTION The olefinic polymers to be used in this invention as component (1) are generally polymers or copolymers of olefins such as ethylene, propylene, isobutylene, butadiene, isoprene, etc.
Further, it is also possible to use copolymers comprising the said olefins and styrene, cyclopentadiene, dicyclopentadiene, ethylidenenorbornene, etc.
, as well as hydrogenated products of these polymers.
Needless to say, various degraded products of these olefinic polymers may also be used.
Generally, it is preferable to use ethylene-propylene copolymers since these copolymers are readily available.
As component (1), modified olefinic polymers containing nitrogen, oxygen and/or sulfur atom(s), for example, basic nitrogen-containing olefinic polymers are preferred, as they are effective in dispersing varnishes or sludges which will be formed during use of the improver of the invention, in addition to the viscosity index-improving effect thereof.
Preferable examples of the basic nitrogen-containing olefinic polymers include those obtained by adding or graft-copolymerizing an acidic component such as maleic acid (anhydride) or (meth)acrylic acid to olefinic polymers followed by imidating or amidating the resulting addition copolymers or graft copolymers.
Additionally, there are further mentioned other various polymers, such as those obtained by oxidizing or hydroperoxidizing olefinic polymers followed by reaction with polyamines; those obtained by oxidizing olefinic polymers followed by condensation with formaldehyde and polyamine by Mannich condensation; those obtained by grafting olefinic polymers with nitrogen-containing vinyl monomers (for example, N-vinyl pyrrolidone, N-vinyl thiopyrrolidone, dialkylaminoethyl (meth)acrylates, N-vinylimidazole, etc.
); and those obtained by graft-adding nitrogen-containing non-vinyl compounds (for example, phenothiazines, imidazoles, thiazoles, benzothiazoles, triazoles, thiazolidines, pyrimidines, pyridines, piperidines, pyrrolidinones, oxazoles, thiomorpholines, etc
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Adhesives and Rubbers 
