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Polymer, process and composition

A composition and polymer technology, applied in the field of polymers, can solve problems such as no obvious improvement observed

Active Publication Date: 2017-07-11
コベストロネザーランズビーヴィー
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No significant improvement was observed in the film properties of the copolymers produced in this document, such as hardness and water sensitivity

Method used

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  • Polymer, process and composition
  • Polymer, process and composition
  • Polymer, process and composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0395]To a round bottom flask equipped with a condenser, thermometer and stirrer, 43 parts of 2-butanone were added. The reactor contents were heated to 85°C. As long as the polymerization temperature is reached, within 270 minutes, feed the monomer material to the reactor, which consists of 25 parts of dimethyl itaconate (DMI), 20 parts of styrene (STY), 25 parts of methyl Methyl acrylate (MMA), 30 parts of acrylic acid (AA) and 0.3 parts of azobisisobutyronitrile (AIBN). At the end of the monomer feed, the polymerization temperature was maintained at 85°C for an additional 60 minutes, after which the reactor contents were cooled to room temperature.

Embodiment II to X

[0397] Examples II to X were prepared in a similar manner according to the following Table 1 with reference to the method described in Example I above, wherein the monomer materials in Example I were replaced with those components and relative amounts listed in Table 1.

[0398] Table 1

[0399] II III IV V VI VII VIII IX X DMI 25 62 55 43 61 55 55 55 55 STY - 5 - - - 5 - - - MMA 25 3 15 32 9 15 15 20 15 DEI 25 - - - - - - - - AAA - 30 - - 30 - 30 - 30 iGO 25 - - 25 - 25 - 25 - MAA - - 30 - - - - - - AIBN 0.8 0.2 0.6 1.0 0.2 1.2 0.2 0.5 0.2

Embodiment XI

[0401] A high pressure polymerization vessel equipped with a stirrer, thermometer, pressure relief valve and high pressure monomer dosing pump was charged with 43 parts of 2-butanone. The reactor contents were heated to 140°C. As long as the polymerization temperature is reached, within 270 minutes, feed the monomer material to the reactor, which consists of 25 parts of dimethyl itaconate (DMI), 20 parts of styrene (STY), 25 parts of methyl Composition of methyl acrylate (MMA), 30 parts of acrylic acid (AA) and 0.15 parts of di-tert-butyl peroxide (DTPO). At the end of the monomer feed, the polymerization temperature was maintained at 85°C for an additional 60 minutes, after which the reactor contents were cooled to room temperature.

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Abstract

The invention relates to a polymer, a process and a composition. There is described a low number average molecular weight (MN<10 kD) and high glass transition temperature (>75 DEG C.) copolymer (optionally a solid grade oligomer (SGO)) that comprises (a) at least 20 wt-% of itaconate functional monomer(s), (b) not more than 40% of a hydrophilic monomer, preferably an acid functional monomer(s) in an amount sufficient to achieve an acid value from 65 to 325 mg KOH per g of solid polymer; (c) optionally not more than 70% of other monomers not being either (a) or (b), having a max content of vinyl aromatic monomer(s) of 40 wt-% and / or max content of methacrylate(s) of 40 wt-%; where the weight percentages of monomers (a), (b) and (c) are calculated as a proportion of the total amount of monomers in the copolymer being 100%.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 201380018881.3 and titled "polymer, method and composition" filed by the applicant DSM Intellectual Property Asset Management Co., Ltd. on February 4, 2013. technical field [0002] The present invention relates to polymers made from itaconate esters and similar monomers; also to methods for preparing these polymers and their use in coatings, inks and adhesives. Background technique [0003] Itaconate, also known as 2-methylidenebutanedioate, is a monomer that can be obtained from biorenewable sources. Although it has been studied for many years. However, they are not widely used to make commercial polymers because they are expensive and often difficult to process. [0004] Polymers with low molecular weight (low Mn) and high glass transition temperature (high Tg) are desirable for a number of reasons. They can form useful coatings, can be used as stabilizers (for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F222/04C08F222/14C08F293/00C08F8/32C08F8/42C08F8/44C09D125/14C09D133/02C09D133/08C09D133/10C09D133/12C09D133/14C09D135/02C09D151/00C09D153/00
CPCC08F8/32C08F8/42C08F8/44C08F220/14C08F222/04C08F222/14C08F293/005C09D125/14C09D133/02C09D133/08C09D133/10C09D133/12C09D133/14C09D135/02C09D151/003C09D153/00C08F2810/20C08F2810/50C08F2800/20C08F2438/03C08F220/1804C08L75/00Y02P20/582Y10T428/31935Y10T428/31938Y10T428/31786Y10T428/31551C08F220/06C08L33/02C08L33/12B05D3/0254B05D3/06B05D3/108C08F22/10C08F22/38C08F26/06C08L33/10C08L51/003C08L67/08C08L75/04C08L2201/52C09D167/08C09D175/04C08L35/02C08F301/00C09D175/08C08F26/08
Inventor 迪吉斯·那布尔斯伊万内·威尔和尼纳·斯马克格拉尔杜斯·柯纳里斯·欧文比克
Owner コベストロネザーランズビーヴィー
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