WO1990006972A1 - Polyurethane molding having excellent resistance to water absorption - Google Patents
Polyurethane molding having excellent resistance to water absorption Download PDFInfo
- Publication number
- WO1990006972A1 WO1990006972A1 PCT/JP1989/001254 JP8901254W WO9006972A1 WO 1990006972 A1 WO1990006972 A1 WO 1990006972A1 JP 8901254 W JP8901254 W JP 8901254W WO 9006972 A1 WO9006972 A1 WO 9006972A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyol
- polyisocyanate
- tris
- water absorption
- molded article
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
Definitions
- the present invention relates to a polyurethane molded article having excellent water absorption resistance.
- Polyurethane molded products are used in automobile parts, electronic and electrical equipment parts, etc. depending on their physical properties.
- Applications are increasing for automotive exterior parts such as panels, and electronic and electrical equipment parts such as housings for computers and air conditioners.
- Polyurethane molded products are manufactured by introducing a reaction mixture consisting of a polyiso- cyanate, a polyol cross-linking agent, a catalyst and additives into a mold that can be hermetically sealed.
- the present inventors have conducted intensive studies on the improvement of the water absorption resistance of a polyurethane molded product, and as a result, have found that tris (? Polyurethane molded products with a foot are found to be excellent in terms of changes in water absorption dimensions and water absorption volumes.
- the polyisocyanate, the polyol, and the crosslinking agent are reacted in a mold in the presence of a catalyst, a foaming agent, and other additives as necessary, and a density of 0.5 to:
- This is a polyurethane molded product obtained by using tris (one-port propyl) phosphate when molding erf polyurethane.
- BEST MODE FOR CARRYING OUT THE INVENTION the amount of tris ( ⁇ -monopropyl propyl) phosphate used is determined based on the total weight of the polyisocynate, the polyol and the crosslinking agent. Usually, it is 0 * 5 to 5%, preferably 1 to 3%.
- the water absorption resistance of the polyurethane molded article having the tris (mono-propyl propyl) phosphate of the present invention is determined by other phosphoric acid esters (eg, trimethyl phosphate, triethyl phosphate, Tripropyl phosphate, tributyl phosphate, etc.).
- Tris (mono- ⁇ -propyl) phosphate can be used by adding it to either the isocarbonate component or the polyol component during polyurethane molding.
- the polyisocyanate used in the present invention those conventionally used in the production of polyurethane can be used.
- polysocyanates include aromatic polysocyanates (eg, 2,4— and no or 2,6—trilness: isosocyanate (TDI), crude TDI).
- MDI dicyclohexylmethanediisocyanate
- araliphatic isocyanates eg, xylylenediisocyanate, etc. Modified products of these (urethane group, carposimid group, etc.) Uretimine group, isocyanurate group, modified oxazolidone group), and a mixture of two or more of these.
- Polyols used in the present invention may be those conventionally used in the production of polyurethane.
- Such polyols include, for example, polyether polyols, polyester polyols, and polymer polyols. These polyols usually have 2 to 8 hydroxyl groups in one molecule, and have a valence of about 11 to about 20 to 500 mg KOH / g.
- crosslinking agent used in the present invention examples include low molecular weight diols (eg, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, etc.).
- low molecular weight diols eg, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, 1,4-butanediol, 1,6-hexanediol, etc.
- Alkano-lumin for example, monoethanolamine, jetano-lua) Minamine, triethanolamine, monopropanol amine, tripropanolamine, etc.
- aliphatic polyamines eg, ethylenediamine, trimethylenediamine, tetramethylamine
- Tylene diamine diethylene triamine
- aromatic polyamines for example, phenylene diamine, drillylene diamine, ethyl triethylene diamine, diphenylmethamine diamine, methylene bis
- the amount of crosslinker used is usually 5 to 40%, preferably 10 to 30%, based on the weight of the polyol.
- catalysts can be used as the catalyst for the polyurethanation reaction used in the present invention.
- amide-based catalysts tertiary amines such as triethylenediamine and N-ethylmorpholine
- Tin-based catalysts such as dibutyltin dilaurate and stannous octoate
- other metal-based catalysts such as lead octylate.
- the amount used is usually 0.01% to 5%, based on the sum of the weights of voryl and crosslinker.
- trichloro mouth monofluoromethane methylene chloride, water, etc.
- the amount of the foaming agent used can be varied depending on the desired density of the polyurethane molded article.
- the density of the polyurethane molded product is selected from the range of 0.5 to 1.2 g !. If it is outside this range, the water absorption resistance is not remarkable even if tris (monopropylpropyl) phosphite is added.
- NC 0 in the production of polyurethane is used.
- the index (equivalent ratio of the NC0 group Z active hydrogen atom-containing group X 100) is usually 80 to 120, preferably 95 to 108.
- a foam stabilizer As other additives, a foam stabilizer, a plasticizer, a stabilizer, a coloring agent, a filler, and the like can be added as needed.
- the polyurethane molded article obtained by combining the specific compound of the present invention has a very small change in water absorption dimension and water absorption volume, and is particularly deformed when used as a large-sized and complicated-shaped automobile exterior part or a part for electric equipment. This is a useful polyurethane molded product that does not cause inconvenience such as distortion.
- compositions of the raw materials used in Examples and Comparative Examples are as follows.
- Polyol A Polyol with 0 H value of 28 nigK0H / g in which 4700 parts of propylene oxide and then 1200 parts of ethylene oxide are added to 92 parts of glycerin.
- a polyol blend consisting of polyol, ethylene glycol, a catalyst and tris (/ 8-crop propyl) phosphate is used.
- the reaction mixture obtained by colliding the mixture with the mixing tank using a mixing head, and then adjusting the temperature to a thickness of 3.0 thigh x 550 thigh x 600 length.
- Polyurethane molded products were molded by injecting into a closed mold.
- High pressure foaming machine HD 500 (made by Admiral)
- Table 1 shows the physical properties and water absorption of the obtained polyurethane molded article.
- the sample for measuring physical properties was subjected to a simple post-loading method at 120 hours after molding and at 1 hour afterwards, and then 23 hours later. It was prepared in a CX 65% RH constant temperature and humidity chamber and subjected to physical property measurement.
- the sample for water absorption measurement was subjected to post-curing for 1 hour at 120 hours after molding and then stored for more than 48 hours in a desiccator at 23'C and then subjected to water absorption measurement.
- the measuring method is as follows Sample size: 75 X 150 X 3.0
- a polystyrene molded article was molded in the same manner as in Example 1 except that tris ( ⁇ -monopropyl propyl) phosphate was not used or other phosphate compound was used. The physical properties and water absorption of the product were measured. The results are shown in Table 1.
- the present invention provides a polyurethane molded article having excellent water absorption resistance, which can be advantageously used for parts for automobiles, parts for electronic and electrical equipment, and the like.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019900701767A KR910700315A (ko) | 1988-12-15 | 1989-12-14 | 내흡수성이 우수한 폴리우레탄 성형품 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63/317343 | 1988-12-15 | ||
JP63317343A JPH02163161A (ja) | 1988-12-15 | 1988-12-15 | 耐吸水性の優れたポリウレタン成形品 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990006972A1 true WO1990006972A1 (en) | 1990-06-28 |
Family
ID=18087165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1989/001254 WO1990006972A1 (en) | 1988-12-15 | 1989-12-14 | Polyurethane molding having excellent resistance to water absorption |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0450076A4 (ja) |
JP (1) | JPH02163161A (ja) |
KR (1) | KR910700315A (ja) |
AU (1) | AU630907B2 (ja) |
WO (1) | WO1990006972A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111333784A (zh) * | 2020-03-24 | 2020-06-26 | 福建省春天生态科技股份有限公司 | 一种高吸水保水树脂的制备方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2654694B2 (ja) * | 1989-09-13 | 1997-09-17 | 日本ポリウレタン工業株式会社 | 熱安定性の優れた熱可塑性ポリウレタン樹脂の製造方法 |
DE4332771A1 (de) * | 1993-09-25 | 1995-03-30 | Hoechst Ag | Fluorchlorkohlenwasserstofffreier, flammwidriger Polyurethanhartschaum |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD160562A1 (de) * | 1980-12-19 | 1983-09-14 | Schwarzheide Synthesewerk Veb | Verfahren zur herstellung flammgeschuetzter thermoplastischer polyurethane |
DD160561A1 (de) * | 1980-12-19 | 1983-09-14 | Schwarzheide Synthesewerk Veb | Verfahren zur herstellung von flammgeschuetzten thermoplastischen polyurethanen |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1217836A (en) * | 1965-09-03 | 1970-12-31 | Ici Ltd | Polyol compositions |
GB1159435A (en) * | 1965-09-03 | 1969-07-23 | Ici Ltd | Flameproof Polyol Compositions |
-
1988
- 1988-12-15 JP JP63317343A patent/JPH02163161A/ja active Pending
-
1989
- 1989-12-14 KR KR1019900701767A patent/KR910700315A/ko not_active Application Discontinuation
- 1989-12-14 AU AU47426/90A patent/AU630907B2/en not_active Ceased
- 1989-12-14 EP EP19900900981 patent/EP0450076A4/en not_active Ceased
- 1989-12-14 WO PCT/JP1989/001254 patent/WO1990006972A1/ja not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD160562A1 (de) * | 1980-12-19 | 1983-09-14 | Schwarzheide Synthesewerk Veb | Verfahren zur herstellung flammgeschuetzter thermoplastischer polyurethane |
DD160561A1 (de) * | 1980-12-19 | 1983-09-14 | Schwarzheide Synthesewerk Veb | Verfahren zur herstellung von flammgeschuetzten thermoplastischen polyurethanen |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111333784A (zh) * | 2020-03-24 | 2020-06-26 | 福建省春天生态科技股份有限公司 | 一种高吸水保水树脂的制备方法 |
CN111333784B (zh) * | 2020-03-24 | 2023-05-02 | 福建省春天生态科技股份有限公司 | 一种高吸水保水树脂的制备方法 |
Also Published As
Publication number | Publication date |
---|---|
EP0450076A1 (en) | 1991-10-09 |
AU630907B2 (en) | 1992-11-12 |
JPH02163161A (ja) | 1990-06-22 |
KR910700315A (ko) | 1991-03-14 |
AU4742690A (en) | 1990-07-10 |
EP0450076A4 (en) | 1992-05-20 |
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