 Optical recording disk |
| Therefore, an object of the invention is to provide a novel and improved optical recording disk ... |
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| Directed energy assisted in vacuo micro embossing |
| OF PREFERRED EMBODIMENTS FIG. 1. shows a diagram of one possible configuration of the embossing ... |
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| Method for preparing poly-N-alkenylamines |
| We claim: 1. A method for preparing thermoplastic poly-N-alkenylamines having the general formula ##... |
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| Polymeric Schiff's bases containing acetylene terminal groups |
| OF THE INVENTION It has been discovered that acetylene-substituted Schiff's bases can be prepared ... |
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| Physically optimized optical disc structure, method and apparatus |
| The present invention provides structures, methods and apparatus which are useful both in coping ... |
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| Polycarbonate from carbonyl halide, bischloroformate and dihydric phenol |
| What is claimed is: 1. High molecular weight thermoplastic aromatic polycarbonate exhibiting ... |
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| Optically isotropic devices |
| OF THE INVENTION As indicated above, in many optical devices it is important that optical clarity ... |
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| Optical recording disk |
| An object of the present invention is to suppress the appearance of wrinkles of a UV-cured resin ... |
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| Arm socket and attached hand prosthesis |
| In view of the above, it is an object of the present invention to provide an arm socket that is ... |
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| Method for detecting and separating thermoplastic containers with near infrared fluorosphores |
| This invention relates to a method for "marking" or "tagging" a thermoplastic polymeric material by ... |
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Particle and method for dispersing additives in thermoplastic resin
| Details |
Inventors: Muller, Bruce M.;
Assignee: Customcolor, Inc. (Cumberland, RI)
Primary Examiner: Rzucidlo; Eugene C.
Assistant Examiner:
Attorney, Agent or Firm: Blodgett; Norman S., Blodgett; Gerry A.
A particle and method for dispersing additives in a thermoplastic resin. The particle consists of a high concentration of additive material, a thermoplastic rubber, a resin, and modifiers. The method involves forming the particle with a high concentration of additive and adding the particle to a mass of thermoplastic resin. |
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DETAILED DESCRIPTION The invention having been thus described, what is claimed as new and desired to secure by Letters Patent is: 1.
An additive particle adapted to be added to a mass of thermoplastic base resin to impact property improvement to the mass, comprising a mixture of: (a) an additive which includes pigment said pigment being from about 50 to 95 weight percent of said particle, (b) from about 3 to about 25 weight percent of said particle of thermoplastic rubber which is a styrene-olefin-styrene block copolymer, and (c) about 5 to about 20 parts by weight per 100 parts thermoplastic rubber of petroleum-based, alkylated aromatic hydrocarbon carrier resin having an average molecular weight of approximately 770 and a ring-and-ball softening point of approximately 100.
degree.
C.
2.
A particle as recited in claim 1, wherein the thermoplastic rubber is styrene-butadiene-styrene block copolymer.
3.
A particle as recited in claim 1, wherein said additive contains approximately 10 wt.
% of zinc stearate.
4.
A particle as recited in claim 1, wherein the particle includes 2 wt.
% of a monomeric epoxydized soy bean oil.
5.
A particle as recited in claim 1, wherein the particle contains calcium carbonate.
6.
A particle as recited in claim 1, wherein the particle contains silica gel.
7.
A method of forming pigment particles for incorporation to a mass of thermoplastic base resin comprising the steps of: (a) mixing dry, powder pigment and dispersant, (b) mixing thermoplastic rubber which is styrene-olefin-styrene block copolymer with about 2.
5 to 10 parts by weight per 100 parts by weight of said thermoplastic rubber of petroleum-based, alkylated aromatic hydrocarbon carrier resin having an average molecuolar weight of approximately 770 and a ring-and-ball softening point of approximately 100.
degree.
C.
, (c) heating the products of steps (a) and (b) to plasticity, (d) mixing the plasticized products of steps (a) and (b) together into a uniform mass in the ratio of 3 to 25 parts by weight of thermoplastic rubber to 50 to 95 parts by weight of pigment, (e) adding to said plasticized uniform mass an additional 2
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Manufacturing Materials 
