摘要
采用下列苯酚对甲醛的分子比，松节油进行烷基化为１∶０．８０～０．８８，重松节油进行烷基化为１∶０．７５～０．８２时，能获得较高聚合度的母体酚醛树脂。该树脂烷基化之后于－０．０９５ＭＰａ表压下加热至≤３００℃脱除低分子物，可得软化点最高为１６０℃左右的萜烯酚醛树脂。其软化点比母体酚醛树脂增高的原因主要是烷基化使树脂分子量增高的结果。
Mother phenol formaldehyde resins of relatively high degree of polymerization were obtained by using the following phenol to formaldehyde molar ratios: 1∶0.80～0.88 when alkylated by turpentine,1∶0.75～0.82 when alkylated by heavy turpentine. After alkylation, these resins were heated to ≤300℃ under -0.095 MPa gauge pressure to remove low molecular weight substances,and terpine phenol formaldehyde resins with softening point up to ca. 160℃ could be obtained. The higher softening points than those of the mother resins were attributed to alkylation which increa￣ses the molecular weights of the resins.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
1998年第3期39-48,共10页
Chemistry and Industry of Forest Products
基金
广西教委资助项目
关键词
松节油
重松节油
萜烯酚醛树脂
酚醛树脂
烷基化
Turpentine
Heavy turpentine
Terpine phenol formaldehyde resin
Phenol formaldehyde resin
Alkylation
