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31. The world gum rosin production appeares to decline in recent years.

32. The important role of rosin, oil of turpentine, tannin, activated carbon of forest chemical industry in national economy are point out.

33. Alkenyl Succinic Anhydride(ASA)using as neutral paper sizing could change the result and capability of application with traditional rosin as acidic paper sizing agent in our country.

34. According to the structure and oxidation mechanism of rosin, the light-colored reaction of polymeric rosin with phenols, phosphite ester, thioester and etc.

35. Its flux filled into drawn copper tube is prepared from soldering flux suitable for Al, Fe, or Cu, gasifying agent 401, rosin, Al-Agpowder and adhesive.

36. Fumaropimaric acid was prepared from rosin and fumaric acid as raw materials.

37. The rosin - based polyglucoside is one kind of alkyl polyglucoside ( APG ).

38. Dry rosin is best in tropic and soft rosin in cold climate.

39. The authors discuss the applications of rosin and its derivant, including nonsulfide flotation and flotation separation of nonferrous metallic ions and organic compound from aqueous solution.

40. Nonionic surfactant polyglycerol acrylic modified rosin ester (PGARE) was synthesized by the reaction of acrylic modified rosin and polyglycerol.

41. In this paper, the synthesis and application of rosin - polyols are summarized.

42. Microwave assisted synthesis was a quick and convenient way to synthesize the polymer of rosin allyl alcohol ester, and the performances of the product were superior to those by routine method.

43. Considering a particle of rosin, the outside of the sample will oxidise first and will also be the first part to then decompose and return to being non-allergenic.

44. A novel bi - pyridine quaternary ammonium salt cationic surfactants was prepared by acrylic modified rosin.

45. Polymerized rosin is a modified products of gum rosin, contains abietic type acids.

46. Lumps of rosin have much smaller surface to volume ratio and do not oxidise significantly.

47. The alkyd modified t - octylphenolic resin was prepared by alcoholized oil with pentaerythritol, rosin and octylphenolic resin.

48. Relationship between structures of rosin esters and sizabilities was illustrated and effects of sizing conditions on the sizability were investigated.

49. The production is estered from extra grade rosin and pentaerythritol.

50. Polyacrylate emulsion was blended with tackifier resin such as rosin emulsion, C_5 petroleum resin emulsion.

51. Catalytic effect of alkyl stannate on rosin esterification was studied. Factors affecting the esterification reaction are discussed in detail.

52. Disproportionated rosin ( DPR ) ( 2 - hydroxyethyl acrylate ) ester was synthesized by acyl chlorination and esterification of DPR acid.

53. Its main ingredient is linseed oil, wood flour, rosin, limestone powder, natural mineral pigments and jute.

54. These resins were characterized by acid value, soft point, DSC - TGA, and compared with rosin.

55. This paper studied that EVA hot melt adhesives were prepared with material of disproportionated rosin, esterification modified with glycerin and pentaerythritol,(http://Sentencedict.com) and modified product as tackifier .

56. Using hemihydrate gypsum as main raw materials and frothing by gum rosin composite vesicant to produce gypsum heat preserving material.

57. The kinetics of thermal oxidation of rosin and abietic acid absorbed on the polyethylene film were respectively studied. The kinetic equation of heat oxidation was determined by UV spectrophotometry.

58. In this paper, sizing result of self-fixing cationic rosin neutral sizing agent is probed, which are made from epichlorohydrin, pyridine and triethylamine.

59. Nonionic surfactant polyglycerol rosin ester was synthesized by reaction of rosin with polyglycerol.

60. Our perennial supply of high quality pine resin, rosin and turpentine.