CN100357380C - 浅色无气味松香的生产方法 - Google Patents

浅色无气味松香的生产方法 Download PDF

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CN100357380C
CN100357380C CNB2005100364634A CN200510036463A CN100357380C CN 100357380 C CN100357380 C CN 100357380C CN B2005100364634 A CNB2005100364634 A CN B2005100364634A CN 200510036463 A CN200510036463 A CN 200510036463A CN 100357380 C CN100357380 C CN 100357380C
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colophony
rosin
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CN1730584A (zh
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张昌荣
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Dongguan Huali Industries Co Ltd
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Abstract

本发明涉及松香加工技术领域，尤其涉及一种浅色无气味松香的生产方法。包括以下步骤(a)将松香装入蒸馏釜中，升温到250℃-265℃，保持真空度为5mm-8mm水柱条件下，从蒸馏釜中抽出松香中所含的全部重油和稠芳烃经小冷凝器冷却进入储油桶；(b)蒸馏釜的温度升到270℃-280℃，保持真空度不变，松香在蒸馏釜中由液态转化为气态，经冷却到230℃-250℃，松香由气态转化为液态，流入反应釜中，在反应釜中加入0.05%-0.15%松香脱色剂，在不停的搅拌下，升温到265℃-275℃，再慢慢冷却到180℃-220℃，再加入0.05%-0.15%松香稳定剂，再冷却到90℃-120℃放料包装。用本发明的方法所制得的松香产品外观基本上无色透明，无刺激性气味。

Description

浅色无气味松香的生产方法
技术领域
本发明涉及松香加工技术领域，尤其涉及一种浅色无气味松香的生产方法。
背景技术
松香是天然树脂中产量最大的一种树脂，也是工业中重要的工业原料，但直接使用的地方不是太多，而是将它加工成酯类后再使用。主要原因有三个方面，1、松香的颜色较深，最好的特级松香的颜色也为6号色；2、由于松香分子的结构中有共轭双键存在，最易与空气中的氧发生氧化作用而变色，且变色后的松香其化学性质也产生变化；3、松香中含有1-3％左右的重油和稠芳烃，而重油又是以双戊烯和20多种萜烯化合物所组成，该成分大都具有刺鼻的气味。
发明内容
本发明要解决的技术问题是提供一种浅色无气味松香的生产方法。
本发明的浅色无气味松香的生产方法是将松放入密闭的蒸馏釜中加温到250℃-265℃，在真空度为5mm-8mm水柱的条件下，从蒸馏釜中抽出松香中所含的全部重油和稠芳烃经小冷凝器冷却进入储油桶，抽出松香中所含的全部重油和稠芳烃，再将蒸馏釜的温度升到270℃-280℃，保持真空度不变，松香在蒸馏釜中由液态转化为气态，经冷却到230℃-250℃，松香由气态转化为液态，流入反应釜中，待反应釜装满后，在反应釜中加入0.05％-0.15％松香脱色剂，在不停的搅拌下，升温到270±5℃，在慢慢冷却到180℃-220℃再加入0.05％-0.15％松香稳定剂，再冷却到90℃-120℃放料包装或由造粒机造粒。
本发明的浅色无气味松香的生产方法，生产工艺简单，成本低，用本发明的浅色无气味松香的生产方法所生产的松香，无刺激性气味外观基本透明无色，质量稳定。
该产品的性能指标与原松香比较
  名称     松香     加工后的松香
  酸值     ≥163KOHmg/g     ≥163KOHmg/g
  软化点(环球法) ≥76℃ ≥80℃
  色泽     ≥6号(铁钴)     ≤70号(哈森)
  热稳定性(空气中)     120℃10分钟开始变色     120℃1.5小时开始变色
注：铁钴1号＝哈森200号
附图说明
附图为本发明的生产工艺流程图。
具体实施方式
以下结合附图和具体实施方式对本发明作进一步详细说明：
参照附图，图中蒸馏釜1、小冷凝器2、储油桶3、大冷凝器4、反应釜5、缓冲罐6、真空泵7、真空控制阀8、真空控制阀9，工艺过程：a将松香装入蒸馏釜1中升温到250℃-265℃，开动真空泵7，保持真空度为5mm-8mm水柱条件下，从蒸馏釜1中抽出松香中所含的全部重油和稠芳烃经小冷凝器2冷却进入储油桶3，打开真空控制阀门8维持1小时，此过程中松香中所含有的重油和稠芳烃，全部蒸发干净，消除了松香的气味；b、关闭真空控制阀门8，打开真空控制阀门9，蒸馏釜1的温度升到270℃-280℃，保持真空度不变，此工艺过程中，松香在蒸馏釜中由液态转化为气态，经大冷凝器4冷却到230℃-250℃，松香由气态转化为液态，流入反应釜5中，待反应釜装满后，再向反应釜5中加入0.05％-0.15％松香稳定剂，再冷却到90℃-120℃左右放料包装或由造粒机造粒。
加工机理：1、蒸馏过程中，将松香中的氧化有色物质去除绝大部分，所剩余量用脱色剂消除，所以用肉眼看近乎无色透明；2、松香在真空气化状态和270℃-280℃高温下，松香分子结构中的共轭双键都发生歧化反应而转化成歧化松香，共轭双键大部分破坏而变得稳定；3、经前期真空蒸馏，松香中绝大部分重油和稠芳烃已清除，所以无气味了。

Claims (1)

1、一种浅色无气味松香的生产方法，包括以下步骤：
(a)将松香装入蒸馏釜中，升温到250℃-265℃，保持真空度为5mm-8mm水柱条件下，从蒸馏釜中抽出松香中所含的全部重油和稠芳烃经小冷凝器冷却进入储油桶；
(b)蒸馏釜的温度升到270℃-280℃保持真空度不变，松香在蒸馏釜中由液态转化为气态，经冷凝器冷却到230℃-250℃，松香由气态转化为液态，流入反应釜中，加入0.05％-0.15％松香脱色剂，在不停的搅拌下，升温到270℃，再慢慢冷却到180℃-220℃，再加入0.05％-0.15％松香稳定剂，再冷却到90℃-120℃放料包装或由造粒机造粒。
CNB2005100364634A 2005-08-10 2005-08-10 浅色无气味松香的生产方法 Expired - Fee Related CN100357380C (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101362924B (zh) * 2008-10-08 2010-12-29 中国林业科学研究院林产化学工业研究所 无浅色剂添加的松香浅色化制备浅色松香的方法
CN101475776B (zh) * 2009-01-13 2011-08-31 中国林业科学研究院林产化学工业研究所 浅色高软化点马来松香季戊四醇酯的制备方法

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CN100564468C (zh) * 2007-03-20 2009-12-02 陆让先 一种松脂脂液净化锅及脂液净化工艺过程
CN103232816A (zh) * 2013-05-07 2013-08-07 上海宇海企业发展集团有限公司 一种松香的制备方法
CN103333615A (zh) * 2013-06-06 2013-10-02 浙江鑫松树脂有限公司 一种浅色松香及其生产方法
CN104559793A (zh) * 2013-12-07 2015-04-29 广西梧州日成林产化工股份有限公司 浅色松香高真空连续蒸馏生产方法
CN106170517B (zh) * 2014-03-28 2019-05-28 荒川化学工业株式会社 增粘树脂、压敏胶粘剂组合物、热熔型压敏胶粘剂用增粘树脂、热熔型压敏胶粘剂组合物
CN103980818B (zh) * 2014-05-08 2015-09-23 江西殷莱特化工有限公司 一种制取高纯松香的方法
CN104128135B (zh) * 2014-08-07 2016-08-24 广西众昌树脂有限公司 预反应器
CN104147991B (zh) * 2014-08-07 2016-10-26 广西众昌树脂有限公司 预反应器
CN105268208A (zh) * 2015-09-30 2016-01-27 广西梧州日成林产化工股份有限公司 氮气真空蒸馏装置
CN109762469B (zh) * 2019-02-27 2021-02-26 广西创跃化工有限公司 水白松香的制备方法

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Publication number Priority date Publication date Assignee Title
CN1065473A (zh) * 1991-11-18 1992-10-21 湖南省浏阳县林产品厂 松香生产新工艺
CN1337431A (zh) * 2001-09-03 2002-02-27 广西大学 松脂加工的漂洗和蒸馏方法
CN1613991A (zh) * 2004-09-16 2005-05-11 北京航空航天大学 用于松香皂的脱色精制工艺及其装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065473A (zh) * 1991-11-18 1992-10-21 湖南省浏阳县林产品厂 松香生产新工艺
CN1337431A (zh) * 2001-09-03 2002-02-27 广西大学 松脂加工的漂洗和蒸馏方法
CN1613991A (zh) * 2004-09-16 2005-05-11 北京航空航天大学 用于松香皂的脱色精制工艺及其装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101362924B (zh) * 2008-10-08 2010-12-29 中国林业科学研究院林产化学工业研究所 无浅色剂添加的松香浅色化制备浅色松香的方法
CN101475776B (zh) * 2009-01-13 2011-08-31 中国林业科学研究院林产化学工业研究所 浅色高软化点马来松香季戊四醇酯的制备方法

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