CN104892883A - Preparation method of clothing leather resin - Google Patents
Preparation method of clothing leather resin Download PDFInfo
- Publication number
- CN104892883A CN104892883A CN201510273128.XA CN201510273128A CN104892883A CN 104892883 A CN104892883 A CN 104892883A CN 201510273128 A CN201510273128 A CN 201510273128A CN 104892883 A CN104892883 A CN 104892883A
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- China
- Prior art keywords
- parts
- degrees celsius
- hour
- add
- clothing leather
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- 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)
Abstract
The invention relates to a preparation method of clothing leather resin. The preparation method comprises the following steps of (1) feeding; (2) reaction bonding; (3) solid content regulation; and (4) performance regulation, wherein the feeding stage in the step (1) comprises the steps of adding 1800 parts of polyester polyol, 3 parts of an antioxidant and 1000 parts of dimethyl formamide, and stirring the substances at the temperature of 50-60 DEG C for 0.5 hour.
Description
Technical field
The present invention relates to a kind of method preparing clothing leather resin, especially a kind of preparation method that can prepare the higher clothing leather resin of softness.
Background technology
When making clothes; we usually can use resin to replace the raw material preparing clothes; but, due to some characteristics of resin, in existing technique; the softness of the clothing leather resin prepared is all lower; although normal user demand can be met, along with people are to apparel quality and the raising gradually of wearing demand, at this moment; just need softness higher, sense of touch more meets daily demand as the clothing leather resin of corium.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of preparation method that can prepare the higher clothing leather resin of softness.
For solving the problems of the technologies described above, present method comprises the steps: (1) feeding stage;
(2) reaction rises the sticky stage; (3) the solid content stage is regulated; (4) the adjusting function stage; The material number dropped in described step (1) ~ (4) is all benchmark with mass unit, feeding stage in described step 1 with the addition of the polyester polyol of 1800 parts, add the antioxidant of 3 parts and the dimethyl formamide of 1000 parts again, and above-mentioned substance is stirred, stir 0.5 hour under 50 ~ 60 degrees Celsius.
The polyester polyol that the present invention adds is used for producing casting type polyurethane elastomer, Polyurethane Thermoplastic Elastomer, microcellular polyurethane shoe sole, PU leather resin, polyurethane adhesive, polyurethane ink and mill base, fabric coating etc.The polyester glycol obtained by adipic acid and BDO, 1,6-hexylene glycol or ethylene glycol is waxy solid, and the polyurethane elastomer crystallinity obtained is strong, and initial bonding strength is large, and the physical strength obtaining goods is also higher; Polyester such as PMA and the PPA normal temperature obtained by the glycol of band side base is in a liquid state, soft, and for ink, soft leather etc., PMA hydrolytic resistance is better, so be added in the method using polyester polyol as feeding intake, the softness that resin can be helped to prepare is higher.
As a further improvement on the present invention, described reaction rises the sticky stage, that the MDI mixture obtained in step (1) being added again 85 parts reacts 1 hour when 75 ~ 80 degrees Celsius, add the dimethyl formamide of 1750 parts afterwards more successively and the ethylene glycol of 50 parts reacts 0.5 hour when 50 ~ 60 degrees Celsius, again reacted mixture is added 200 parts of MDI, react 2 hours under the condition of 75 ~ 80 degrees Celsius, the catalyzer adding 0.5 part again reacts 0.5 hour under the condition of 75 ~ 80 degrees Celsius, finally add the MDI of 10 parts respectively, and repeat interpolation 3 times, described catalyzer is stannous octoate.The viscosity of the compound in step one, for rising the sticky stage, due to the chemical property of MDI, can uprise by this reaction.
As a further improvement on the present invention, described step (3) be by the compound obtained in step (2) again when 75 ~ 80 degrees Celsius, added the dimethyl formamide of 1000 parts every 0.5 hour, altogether add twice.Described step (4) is by the compound obtained in step (3), then adds the terminator of 0 ~ 1 part, and described terminator is methyl alcohol, then adds adjustment resin 3000 parts and auxiliary agent 300 parts, stirs 1 hour.Described auxiliary agent is poly(propylene oxide), the poly(propylene oxide) polyether glycol (polyol) that ring-opening polymerization generates under alkali metal hydroxide and initiator (being generally the compound containing two or more reactive hydrogen atom) effect, is also called for short polyethers.Depending on the difference of initiator used, soft bubble polyethers can be divided into, in kind of the present invention, add and use soft bubble polyethers, soft bubble can be carried out to reactant after this auxiliary agent of interpolation, the softness of the reactant obtained is uprised further.
Embodiment
The present invention includes following steps: (1) feeding stage; With the addition of the polyester polyol of 1800 parts in feeding stage, then add the antioxidant of 3 parts and the dimethyl formamide of 1000 parts, and above-mentioned substance is stirred, stir 0.5 hour under 50 ~ 60 degrees Celsius.
The polyester polyol that the present invention adds is used for producing casting type polyurethane elastomer, Polyurethane Thermoplastic Elastomer, microcellular polyurethane shoe sole, PU leather resin, polyurethane adhesive, polyurethane ink and mill base, fabric coating etc.The polyester glycol obtained by adipic acid and BDO, 1,6-hexylene glycol or ethylene glycol is waxy solid, and the polyurethane elastomer crystallinity obtained is strong, and initial bonding strength is large, and the physical strength obtaining goods is also higher; Polyester such as PMA and the PPA normal temperature obtained by the glycol of band side base is in a liquid state, soft, and for ink, soft leather etc., PMA hydrolytic resistance is better, so be added in the method using polyester polyol as feeding intake, the softness that resin can be helped to prepare is higher.
(2) reaction rises the sticky stage: the MDI mixture obtained in step (1) being added again 85 parts reacts 1 hour when 75 ~ 80 degrees Celsius, add the dimethyl formamide of 1750 parts afterwards more successively and the ethylene glycol of 50 parts reacts 0.5 hour when 50 ~ 60 degrees Celsius, again reacted mixture is added 200 parts of MDI, react 2 hours under the condition of 75 ~ 80 degrees Celsius, the catalyzer adding 0.5 part again reacts 0.5 hour under the condition of 75 ~ 80 degrees Celsius, finally add the MDI of 10 parts respectively, and repeat interpolation 3 times, described catalyzer is stannous octoate.The viscosity of the compound in step one, for rising the sticky stage, due to the chemical property of MDI, can uprise by this reaction.
(3) regulate the solid content stage: described step (3) be by the compound obtained in step (2) again when 75 ~ 80 degrees Celsius, added the dimethyl formamide of 1000 parts every 0.5 hour, altogether add twice.
(4) the adjusting function stage: described step (3) be by the compound obtained in step (2) again when 75 ~ 80 degrees Celsius, added the dimethyl formamide of 1000 parts every 0.5 hour, altogether add twice.Described step (4) is by the compound obtained in step (3), then adds the terminator of 0 ~ 1 part, and described terminator is methyl alcohol, then adds adjustment resin 3000 parts and auxiliary agent 300 parts, stirs 1 hour.Described auxiliary agent is poly(propylene oxide), the poly(propylene oxide) polyether glycol (polyol) that ring-opening polymerization generates under alkali metal hydroxide and initiator (being generally the compound containing two or more reactive hydrogen atom) effect, is also called for short polyethers.Depending on the difference of initiator used, soft bubble polyethers can be divided into, in kind of the present invention, add and use soft bubble polyethers, soft bubble can be carried out to reactant after this auxiliary agent of interpolation, the softness of the reactant obtained is uprised further.
Claims (6)
1. a clothing leather process for preparing resins, is characterized in that: described preparation method comprises the steps:
(1) feeding stage;
(2) reaction rises the sticky stage;
(3) the solid content stage is regulated;
(4) the adjusting function stage;
The material number dropped in described step (1) ~ (4) is all benchmark with mass unit, described feeding stage with the addition of the polyester polyol of 1800 parts, add the antioxidant of 3 parts and the dimethyl formamide of 1000 parts again, and above-mentioned substance is stirred, stir 0.5 hour under 50 ~ 60 degrees Celsius.
2. clothing leather process for preparing resins according to claim 1, it is characterized in that: described reaction rises the sticky stage, that the MDI mixture obtained in step (1) being added again 85 parts reacts 1 hour when 75 ~ 80 degrees Celsius, add the dimethyl formamide of 1750 parts afterwards more successively and the ethylene glycol of 50 parts reacts 0.5 hour when 50 ~ 60 degrees Celsius, again reacted mixture is added 200 parts of MDI, react 2 hours under the condition of 75 ~ 80 degrees Celsius, the catalyzer adding 0.5 part again reacts 0.5 hour under the condition of 75 ~ 80 degrees Celsius, finally add the MDI of 10 parts respectively, and repeat interpolation 3 times.
3. clothing leather process for preparing resins according to claim 2, is characterized in that: described catalyzer is stannous octoate.
4. clothing leather process for preparing resins according to claim 2, it is characterized in that: described step (3) be by the compound obtained in step (2) again when 75 ~ 80 degrees Celsius, add the dimethyl formamide of 1000 parts every 0.5 hour, altogether add twice.
5. clothing leather process for preparing resins according to claim 4, it is characterized in that: described step (4) is by the compound obtained in step (3), then adds the terminator of 0 ~ 1 part, and described terminator is methyl alcohol, add adjustment resin 3000 parts and auxiliary agent 300 parts again, stir 1 hour.
6. clothing leather process for preparing resins according to claim 5, is characterized in that: described auxiliary agent is poly(propylene oxide).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273128.XA CN104892883A (en) | 2015-05-26 | 2015-05-26 | Preparation method of clothing leather resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510273128.XA CN104892883A (en) | 2015-05-26 | 2015-05-26 | Preparation method of clothing leather resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104892883A true CN104892883A (en) | 2015-09-09 |
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ID=54025884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510273128.XA Pending CN104892883A (en) | 2015-05-26 | 2015-05-26 | Preparation method of clothing leather resin |
Country Status (1)
| Country | Link |
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| CN (1) | CN104892883A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503499A (en) * | 2009-03-11 | 2009-08-12 | 合肥安利化工有限公司 | Wet low modulus ultra-soft high peel strength polyurethane resin for synthetic leather and preparation thereof |
-
2015
- 2015-05-26 CN CN201510273128.XA patent/CN104892883A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101503499A (en) * | 2009-03-11 | 2009-08-12 | 合肥安利化工有限公司 | Wet low modulus ultra-soft high peel strength polyurethane resin for synthetic leather and preparation thereof |
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Application publication date: 20150909 |
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